Internet Engineering Task Force (IETF) B. Hoeneisen Request for Comments: 6118 Ucom.ch Updates: 3762, 3764, 3953, 4143, 4002, A. Mayrhofer 4238, 4355, 4415, 4769, 4969, enum.at 4979, 5028, 5278, 5333 March 2011 Category: Standards Track ISSN: 2070-1721 Update of Legacy IANA Registrations of Enumservices Abstract This document revises all Enumservices that were IANA registered under the now obsolete specification of the Enumservice registry defined in RFC 3761. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6118. Copyright Notice Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Hoeneisen & Mayrhofer Standards Track [Page 1] RFC 6118 Update Legacy Enumservice Registrations March 2011 This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. IESG Action . . . . . . . . . . . . . . . . . . . . . . . . . 5 4. Legacy Enumservice Registrations Converted to XML Chunks . . . 5 4.1. email:mailto . . . . . . . . . . . . . . . . . . . . . . . 6 4.2. ems:mailto . . . . . . . . . . . . . . . . . . . . . . . . 7 4.3. ems:tel . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.4. fax:tel . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.5. ft:ftp . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.6. h323 . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.7. ical-access:http . . . . . . . . . . . . . . . . . . . . . 12 4.8. ical-access:https . . . . . . . . . . . . . . . . . . . . 13 4.9. ical-sched:mailto . . . . . . . . . . . . . . . . . . . . 14 4.10. ifax:mailto . . . . . . . . . . . . . . . . . . . . . . . 15 4.11. im . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.12. mms:mailto . . . . . . . . . . . . . . . . . . . . . . . . 17 4.13. mms:tel . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.14. pres . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.15. pstn:sip . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.16. pstn:tel . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.17. sip . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.18. sms:mailto . . . . . . . . . . . . . . . . . . . . . . . . 24 4.19. sms:tel . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.20. unifmsg:http . . . . . . . . . . . . . . . . . . . . . . . 26 4.21. unifmsg:https . . . . . . . . . . . . . . . . . . . . . . 27 4.22. unifmsg:sip . . . . . . . . . . . . . . . . . . . . . . . 28 4.23. unifmsg:sips . . . . . . . . . . . . . . . . . . . . . . . 29 4.24. vcard . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.25. videomsg:http . . . . . . . . . . . . . . . . . . . . . . 31 4.26. videomsg:https . . . . . . . . . . . . . . . . . . . . . . 32 4.27. videomsg:sip . . . . . . . . . . . . . . . . . . . . . . . 33 4.28. videomsg:sips . . . . . . . . . . . . . . . . . . . . . . 34 4.29. voice:tel . . . . . . . . . . . . . . . . . . . . . . . . 35 4.30. voicemsg:http . . . . . . . . . . . . . . . . . . . . . . 37 Hoeneisen & Mayrhofer Standards Track [Page 2] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.31. voicemsg:https . . . . . . . . . . . . . . . . . . . . . . 38 4.32. voicemsg:sip . . . . . . . . . . . . . . . . . . . . . . . 39 4.33. voicemsg:sips . . . . . . . . . . . . . . . . . . . . . . 40 4.34. voicemsg:tel . . . . . . . . . . . . . . . . . . . . . . . 41 4.35. vpim:ldap . . . . . . . . . . . . . . . . . . . . . . . . 42 4.36. vpim:mailto . . . . . . . . . . . . . . . . . . . . . . . 43 4.37. web:http . . . . . . . . . . . . . . . . . . . . . . . . . 45 4.38. web:https . . . . . . . . . . . . . . . . . . . . . . . . 46 4.39. xmpp . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 47 6. Security Considerations . . . . . . . . . . . . . . . . . . . 47 7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 47 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 48 8.1. Normative References . . . . . . . . . . . . . . . . . . . 48 8.2. Informative References . . . . . . . . . . . . . . . . . . 49 Appendix A. Former Content of the IANA Repository . . . . . . . . 49 Hoeneisen & Mayrhofer Standards Track [Page 3] RFC 6118 Update Legacy Enumservice Registrations March 2011 1. Introduction [RFC6117] has obsoleted the IANA registration section of [RFC3761]. Since the IANA Enumservice registry contains various Enumservices registered under the regime of RFC 3761, those registrations do not conform to the new guidelines as specified in [RFC6117]. To ensure consistency among all Enumservice registrations at IANA, this document adds the (nowadays) missing elements to those legacy registrations. Furthermore, all legacy Enumservice registrations are converted to the new XML-chunk format, and, where deemed necessary, minor editorial corrections are applied. However, this document only adds the missing elements to the XML chunks as specified in the IANA Considerations section of [RFC6117], but it does not complete the (nowadays) missing sections of the corresponding Enumservice Specifications. In order to conform with the new registration regime as specified in [RFC6117], those Enumservice Specifications still have to be revised. It is important to note that this document does not update the functional specification of the concerned Enumservices. The following RFCs are updated by this document: o [RFC3762] o [RFC3764] o [RFC3953] o [RFC4143] o [RFC4002] o [RFC4238] o [RFC4355] o [RFC4415] o [RFC4769] o [RFC4969] o [RFC4979] o [RFC5028] o [RFC5278] o [RFC5333] 2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. Hoeneisen & Mayrhofer Standards Track [Page 4] RFC 6118 Update Legacy Enumservice Registrations March 2011 3. IESG Action According to [RFC3761], any Enumservice registration had to be published as a Standards Track, Experimental, or BCP (Best Current Practice) RFC. [RFC6117] no longer has this requirement, i.e., "Specification Required", which implies the use of a Designated Expert [RFC5226], is sufficient. This document changes the approval requirement for updates to Enumservice registrations to Specification Required, whereby the specification and request are reviewed by a Designated Expert as described in [RFC6117]. 4. Legacy Enumservice Registrations Converted to XML Chunks In the following, the legacy Enumservice Registrations are converted to XML chunks that include the new elements introduced by [RFC6117]. (Note that references in Sections 4.1 - 4.39 refer to the references section within the respective Enumservice Specification.) 4.1. email:mailto Application-Based, Common email mailto mailto This Enumservice indicates that the resource can be addressed by the associated URI in order to send an email. See , Section 6. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 5] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.2. ems:mailto Application-Based, Common ems mailto mailto This Enumservice indicates that the resource identified by the associated URI is capable of receiving a message using an email protocol. EMS content is sent over SMTP using the format specified by TS 23.140 [15] Section 8.4.4 and TS 26.140 [16] Section 4, as an MMS message. Within such a message, EMS content is carried as either a text or application/octet-stream MIME sub-part (see TS 26.140 [16], Section 4.1). References are contained in . There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of apply. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 6] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.3. ems:tel Application-Based, Common ems tel tel This Enumservice indicates that the resource identified by the associated URI is capable of receiving a message using the Enhanced Message Service (EMS) [14]. References are contained in . There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of apply. COMMON (updated by RFC 6118) Note that an indication of EMS can be taken as implying that the recipient is capable of receiving SMS messages at this address as well. Hoeneisen & Mayrhofer Standards Track [Page 7] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.4. fax:tel Application-Based, Subset fax tel tel This Enumservice indicates that the resource identified by the associated URI is capable of being contacted to provide a communication session during which facsimile documents can be sent. A client selecting this NAPTR will have support for generating and sending facsimile documents to the recipient using the PSTN session and transfer protocols specified in [12] and [13] in - in short, they will have a fax program with a local or shared PSTN access over which they can send faxes. References are contained in . See , Section 6. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 8] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.5. ft:ftp Application-Based, Subset ft ftp ftp This Enumservice indicates that the resource identified by the associated URI is a file service from which a file or file listing can be retrieved. See , Section 5. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 9] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.6. h323 Protocol-Based h323 h323 See , Section 3. See , Section 5. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 10] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.7. ical-access:http Application-Based, Common ical-access http http This Enumservice indicates that the resource identified can be addressed by the associated URI in order to access a user's calendar (for example free/busy status) using the CalDAV [7] protocol for Internet calendaring. References are contained in . See , Section 4. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 11] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.8. ical-access:https Application-Based, Common ical-access https https This Enumservice indicates that the resource identified can be addressed by the associated URI in order to access a user's calendar (for example free/busy status) using the CalDAV [7] protocol for Internet calendaring. References are contained in . See , Section 4. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 12] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.9. ical-sched:mailto Application-Based, Common ical-sched mailto mailto This Enumservice indicates that the resource identified can be addressed by the associated URI used for scheduling using Internet calendaring via Internet mail with the iMIP [6] protocol. References are contained in . See , Section 4. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 13] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.10. ifax:mailto Application-Based, Subset ifax mailto mailto See , Section 1. See , Section 3. COMMON (updated by RFC 6118) The URI Scheme is 'mailto' because facsimile is a profile of standard Internet mail and uses standard Internet mail addressing. Hoeneisen & Mayrhofer Standards Track [Page 14] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.11. im Application-Based, Common im im This Enumservice indicates that the resource identified is an 'im:' URI. The 'im:' URI scheme does not identify any particular protocol that will be used to handle instant messaging receipt or delivery, rather the mechanism in RFC 3861 [4] is used to discover whether an IM protocol supported by the party querying ENUM is also supported by the target resource. References are contained in . See , Section 3. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 15] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.12. mms:mailto Application-Based, Common mms mailto mailto This Enumservice indicates that the resource identified by the associated URI is capable of receiving a message using an email protocol. MMS messages are sent over SMTP using the format specified by TS 23.140 [15] Section 8.4.4 and TS 26.140 [16] Section 4. Within and between MMS Environments (MMSE, network infrastructures that support the MultiMedia Service), other pieces of state data (for example, charging-significant information) are exchanged between MMS Relay Servers. Thus, although these servers use SMTP as the "bearer" for their application exchanges, they map their internal state to specialized header fields carried in the SMTP message exchanges. The header fields used in such MMSE are described in detail in [17]. References are contained in . There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of apply. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 16] RFC 6118 Update Legacy Enumservice Registrations March 2011 The MMS Architecture describes an interface between the MMSE and "legacy messaging systems" (labelled as MM3) that accepts "standard" SMTP messages. Thus, although the MMS Relay Server that supports this interface appears as a standard SMTP server from the perspective of an Internet-based mail server, it acts as a gateway and translator, adding the internal state data that is used within and between the MMS Environments. This mechanism is described in [17], which also includes references to the specifications agreed by those bodies responsible for the design of the MMS. References are contained in . Hoeneisen & Mayrhofer Standards Track [Page 17] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.13. mms:tel Application-Based, Common mms tel tel This Enumservice indicates that the resource identified by the associated URI is capable of receiving a message using the Multimedia Messaging Service (MMS) [15]. References are contained in . There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of apply. COMMON (updated by RFC 6118) Note that MMS can be used as an alternative to deliver an SMS RP-DATA RPDU if, for example, the SMS bearer is not supported. If an entry includes this Enumservice, then in effect this can be taken as implying that the recipient is capable of receiving EMS or SMS messages at this address. Such choices on the end system design do have two small caveats; whilst in practice all terminals supporting MMS today support SMS as well, it might not necessarily be the case in the future, and there may Hoeneisen & Mayrhofer Standards Track [Page 18] RFC 6118 Update Legacy Enumservice Registrations March 2011 be tariff differences in using the MMS rather than using the SMS or EMS. 4.14. pres Application-Based, Common pres pres See , Section 4. See , Section 6. COMMON (updated by RFC 6118) See , Section 3. Hoeneisen & Mayrhofer Standards Track [Page 19] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.15. pstn:sip Application-Based, Common pstn sip sip These Enumservices indicate that the resource identified can be addressed by the associated URI in order to initiate a telecommunication session, which may include two-way voice or other communications, to the PSTN. See , Section 7. COMMON (updated by RFC 6118) A Number Portability Dip Indicator (npdi) should be used in practice (see , Section 4). Hoeneisen & Mayrhofer Standards Track [Page 20] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.16. pstn:tel Application-Based, Ancillary pstn tel tel These Enumservices indicate that the resource identified can be addressed by the associated URI in order to initiate a telecommunication session, which may include two-way voice or other communications, to the PSTN. These URIs may contain number portability data as specified in RFC4694 [10]. References are contained in . See , Section 7. COMMON (updated by RFC 6118) A Number Portability Dip Indicator (npdi) should be used in practice (see , Section 4). Hoeneisen & Mayrhofer Standards Track [Page 21] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.17. sip Protocol-Based sip sip sips See , Section 4. See , Section 6. COMMON (updated by RFC 6118) See , Section 3. Hoeneisen & Mayrhofer Standards Track [Page 22] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.18. sms:mailto Application-Based, Common sms mailto mailto This Enumservice indicates that the resource identified by the associated URI is capable of receiving a message using an email protocol. SMS content is sent over SMTP using the format specified by TS 23.140 [15] Section 8.4.4 and TS 26.140 [16] Section 4, as an MMS message. Within such a message, SMS content is carried as either a text or application/octet-stream MIME sub-part (see TS 26.140 [16], Section 4.1) References are contained in . There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of apply. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 23] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.19. sms:tel Application-Based, Common sms tel tel This Enumservice indicates that the resource identified by the associated URI is capable of receiving a message using the Short Message Service (SMS) [14]. References are contained in . There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of apply. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 24] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.20. unifmsg:http Application-Based, Common unifmsg http http This Enumservice indicates that the resource identified by the associated URI scheme is capable of being a source of information. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'http:' [11] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. References are contained in . See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 25] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.21. unifmsg:https Application-Based, Common unifmsg https https This Enumservice indicates that the resource identified by the associated URI scheme is capable of being a source of information, which can be contacted using TLS or the Secure Socket Layer protocol. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'https:' [12] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. References are contained in . See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 26] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.22. unifmsg:sip Application-Based, Common unifmsg sip sip This Enumservice indicates that the resource identified can be addressed by the associated URI scheme in order to initiate a unified communication session to a unified messaging system. See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 27] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.23. unifmsg:sips Application-Based, Common unifmsg sips sips This Enumservice indicates that the resource identified can be addressed by the associated URI scheme in order to initiate a unified communication session to a unified messaging system. See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 28] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.24. vcard Data Type-Based vcard http https This Enumservice indicates that the resource identified is a plain vCard, according to RFC2426, which may be accessed using HTTP / HTTPS [7]. Clients fetching the vCard from the resource indicated should expect access to be restricted. Additionally, the comprehension of the data provided may vary depending on the client's identity. References are contained in . See , Section 5. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 29] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.25. videomsg:http Application-Based, Common videomsg http http This Enumservice indicates that the resource identified by the associated URI scheme is capable of being a source of information. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'http:' [11] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. References are contained in . See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 30] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.26. videomsg:https Application-Based, Common videomsg https https This Enumservice indicates that the resource identified by the associated URI scheme is capable of being a source of information, which can be contacted using TLS or the Secure Socket Layer protocol. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'https:' [12] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. References are contained in . See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 31] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.27. videomsg:sip Application-Based, Common videomsg sip sip This Enumservice indicates that the resource identified can be addressed by the associated URI scheme in order to initiate a video communication session to a video messaging system. See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 32] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.28. videomsg:sips Application-Based, Common videomsg sips sips This Enumservice indicates that the resource identified can be addressed by the associated URI scheme in order to initiate a video communication session to a video messaging system. See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 33] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.29. voice:tel Application-Based, Common voice tel tel The kind of communication indicated by this Enumservice is "Interactive Voice". From a protocol perspective, this communication is expected to involve bidirectional media streams carrying audio data. A client may imply that the person controlling population of a NAPTR holding this Enumservice indicates their capability to engage in an interactive voice session when contacted using the URI generated by this NAPTR. See , Section 5. COMMON (updated by RFC 6118) This Enumservice indicates that the person responsible for the NAPTR is accessible via the PSTN (Public Switched Telephone Network) or PLMN (Public Land Mobile Network) using the value of the generated URI. The kind of subsystem required to initiate a Voice Enumservice with this Subtype is a "Dialler". This is a subsystem that either provides a local Hoeneisen & Mayrhofer Standards Track [Page 34] RFC 6118 Update Legacy Enumservice Registrations March 2011 connection to the PSTN or PLMN, or that provides an indirect connection to those networks. The subsystem will use the telephone number held in the generated URI to place a voice call. The voice call is placed to a network that uses E.164 numbers to route calls to an appropriate destination. Note that the PSTN/PLMN connection may be indirect. The end user receiving this NAPTR may have a relationship with a Communications Service Provider that accepts call initiation requests from that subsystem using an IP-based protocol such as SIP or H.323, and places the call to the PSTN using a remote gateway service. In this case, the Provider may either accept requests using "tel:" URIs or has a defined mechanism to convert "tel:" URI values into a "protocol-native" form. The "tel:" URI value SHOULD be fully qualified (using the "global phone number" form of RFC 3966 [10]). A "local phone number" as defined in that document SHOULD NOT be used unless the controller of the zone in which the NAPTR appears is sure that it can be distinguished unambiguously by all clients that can access the resource record and that a call from their network access points can be routed to that destination. References are contained in . Hoeneisen & Mayrhofer Standards Track [Page 35] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.30. voicemsg:http Application-Based, Common voicemsg http http This Enumservice indicates that the resource identified by the associated URI scheme is capable of being a source of information. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'http:' [11] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even voice message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. References are contained in . See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 36] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.31. voicemsg:https Application-Based, Common voicemsg https https This Enumservice indicates that the resource identified by the associated URI scheme is capable of being a source of information, which can be contacted using TLS or the Secure Socket Layer protocol. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'https:' [12] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even voice message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. References are contained in . See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 37] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.32. voicemsg:sip Application-Based, Common voicemsg sip sip This Enumservice indicates that the resource identified can be addressed by the associated URI scheme in order to initiate a voice communication session to a voice messaging system. See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 38] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.33. voicemsg:sips Application-Based, Common voicemsg sips sips This Enumservice indicates that the resource identified can be addressed by the associated URI scheme in order to initiate a voice communication session to a voice messaging system. See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 39] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.34. voicemsg:tel Application-Based, Common voicemsg tel tel This Enumservice indicates that the resource identified can be addressed by the associated URI scheme in order to initiate a voice communication session to a voice messaging system. See , Section 3. COMMON (updated by RFC 6118) Implementers should review a non-exclusive list of examples in Section 7 of . Hoeneisen & Mayrhofer Standards Track [Page 40] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.35. vpim:ldap Data Type-Based vpim ldap ldap See , Section 3.2 - 3.3. Malicious Redirection: One of the fundamental dangers related to any service such as this is that a malicious entry in a resolver's database will cause clients to resolve the E.164 into the wrong LDAP URI. The possible intent may be to cause the client to connect to a rogue LDAP server and retrieve (or fail to retrieve) a resource containing fraudulent or damaging information. Denial of Service: By removing the URI to which the E.164 maps, a malicious intruder may remove the client's ability to access the LDAP directory server. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 41] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.36. vpim:mailto Data Type-Based vpim mailto mailto See , Section 4.2 - 4.4. Malicious Redirection: One of the fundamental dangers related to any service such as this is that a malicious entry in a resolver's database will cause clients to resolve the E.164 into the wrong email URI. The possible intent may be to cause the client to send the information to an incorrect destination. Denial of Service: By removing the URI to which the E.164 maps, a malicious intruder may remove the client's ability to access the resource. Unsolicited Bulk Email: The exposure of email addresses through the ENUM service provides a bulk mailer access to large numbers of email addresses where only the telephone number was previously known. COMMON (updated by RFC 6118) Error Conditions: Hoeneisen & Mayrhofer Standards Track [Page 42] RFC 6118 Update Legacy Enumservice Registrations March 2011 E.164 number not in the numbering plan E.164 number in the numbering plan, but no URIs exist for that number E2U+vpim:mailto Service unavailable of email addresses where only the telephone number was previously known. Hoeneisen & Mayrhofer Standards Track [Page 43] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.37. web:http Application-Based, Common web http http This Enumservice indicates that the resource identified by the associated URI is capable of being a source of information. It has to be noted that the kind of information retrieved can be manifold. Usually, contacting a resource by an "http:" URI provides a document. This document can contain references that will trigger download of many different kinds of information, like audio or video or executable code. Thus, one cannot be more specific about the kind of information that can be expected when contacting the resource. See , Section 5. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 44] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.38. web:https Application-Based, Common web https https This Enumservice indicates that the resource identified by the associated URI is capable of being a source of information, which can be contacted by using TLS or the Secure Socket Layer protocol. It has to be noted that the kind of information retrieved can be manifold. Usually, contacting a resource by an "https:" URI provides a document. This document can contain all different kinds of information, like audio or video or executable code. Thus, one cannot be more specific what information to expect when contacting the resource. See , Section 5. COMMON (updated by RFC 6118) Hoeneisen & Mayrhofer Standards Track [Page 45] RFC 6118 Update Legacy Enumservice Registrations March 2011 4.39. xmpp Protocol-Based xmpp xmpp This Enumservice indicates that the resource identified is an XMPP entity. See , Section 6. COMMON (updated by RFC 6118) 5. IANA Considerations IANA replaced all legacy Enumservice Registrations as per Section 4. 6. Security Considerations Since this document does not introduce any technology or protocol, there are no security issues to be considered for this document itself. 7. Acknowledgements The authors would like to thank the following people who have provided feedback or significant contributions to the development of this document: Jari Arkko, Scott Bradner, Gonzalo Camarillo, Alfred Hoenes, Ari Keranen, and Alexey Melnikov. Hoeneisen & Mayrhofer Standards Track [Page 46] RFC 6118 Update Legacy Enumservice Registrations March 2011 8. References 8.1. Normative References [RFC2026] Bradner, S., "The Internet Standards Process -- Revision 3", BCP 9, RFC 2026, October 1996. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC3761] Faltstrom, P. and M. Mealling, "The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)", RFC 3761, April 2004. [RFC3762] Levin, O., "Telephone Number Mapping (ENUM) Service Registration for H.323", RFC 3762, April 2004. [RFC3764] Peterson, J., "enumservice registration for Session Initiation Protocol (SIP) Addresses-of-Record", RFC 3764, April 2004. [RFC3953] Peterson, J., "Telephone Number Mapping (ENUM) Service Registration for Presence Services", RFC 3953, January 2005. [RFC4002] Brandner, R., Conroy, L., and R. Stastny, "IANA Registration for Enumservice 'web' and 'ft'", RFC 4002, February 2005. [RFC4143] Toyoda, K. and D. Crocker, "Facsimile Using Internet Mail (IFAX) Service of ENUM", RFC 4143, November 2005. [RFC4238] Vaudreuil, G., "Voice Message Routing Service", RFC 4238, October 2005. [RFC4355] Brandner, R., Conroy, L., and R. Stastny, "IANA Registration for Enumservices email, fax, mms, ems, and sms", RFC 4355, January 2006. [RFC4415] Brandner, R., Conroy, L., and R. Stastny, "IANA Registration for Enumservice Voice", RFC 4415, February 2006. [RFC4769] Livingood, J. and R. Shockey, "IANA Registration for an Enumservice Containing Public Switched Telephone Network (PSTN) Signaling Information", RFC 4769, November 2006. Hoeneisen & Mayrhofer Standards Track [Page 47] RFC 6118 Update Legacy Enumservice Registrations March 2011 [RFC4969] Mayrhofer, A., "IANA Registration for vCard Enumservice", RFC 4969, August 2007. [RFC4979] Mayrhofer, A., "IANA Registration for Enumservice 'XMPP'", RFC 4979, August 2007. [RFC5028] Mahy, R., "A Telephone Number Mapping (ENUM) Service Registration for Instant Messaging (IM) Services", RFC 5028, October 2007. [RFC5278] Livingood, J. and D. Troshynski, "IANA Registration of Enumservices for Voice and Video Messaging", RFC 5278, July 2008. [RFC5333] Mahy, R. and B. Hoeneisen, "IANA Registration of Enumservices for Internet Calendaring", RFC 5333, October 2009. [RFC6117] Hoeneisen, B., Mayrhofer, A., and J. Livingood, "IANA Registration of Enumservices: Guide, Template, and IANA Considerations", RFC 6117, March 2011. 8.2. Informative References [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 5226, May 2008. Hoeneisen & Mayrhofer Standards Track [Page 48] RFC 6118 Update Legacy Enumservice Registrations March 2011 Appendix A. Former Content of the IANA Repository Enumservice Registrations (last updated 2009-10-13) Registries included below: - Enumservice Registrations Registry Name: Enumservice Registrations Reference: [RFC3761] Registration Procedures: Require an RFC approved by the IESG Note: Enumservice specifications contain the functional specification (i.e. what it can be used for), the valid protocols, and the URI schemes that may be returned. Registry: Service Name: "H323" URI Scheme(s): "h323:" Functional Specification: See Section "3. The E2U+H323 ENUM Service" of [RFC3762] Security considerations: see section "5. Security Considerations" of [RFC3762] Intended usage: COMMON Author: Orit Levin [RFC3762] Service Name: "SIP" Type(s): "SIP" Subtype(s): N/A URI Scheme(s): "sip", "sips:" Functional Specification: see Section 4 of [RFC3764] Security considerations: see Section 6 of [RFC3764] Intended usage: COMMON Author: Jon Peterson (jon.peterson&neustar.biz) Any other information that the author deems interesting: see Section 3 of [RFC3764] [RFC3764] Hoeneisen & Mayrhofer Standards Track [Page 49] RFC 6118 Update Legacy Enumservice Registrations March 2011 Service Name: "ifax" Type: "ifax" Subtype: "mailto" URI Scheme: "mailto" The URI Scheme is "mailto" because facsimile is a profile of standard Internet mail and uses standard Internet mail addressing. Functional Specification: see section 1 of [RFC4143] Security Considerations: see section 3 of [RFC4143] Intended usage: COMMON Author: Kiyoshi Toyoda(toyoda.kiyoshi&jp.panasonic.com) Dave Crocker(dcrocker&brandenburg.com) [RFC4143] Service Name: "pres" URI Scheme(s): "pres:" Functional Specification: see Section 4 of [RFC3953] Security considerations: see Section 6 of [RFC3953] Intended usage: COMMON Author: Jon Peterson (jon.peterson&neustar.biz) Any other information that the author deems interesting: See Section 3 of [RFC3953] [RFC3953] Service Name: "web" Type: "web" Subtype: "http" URI Scheme: 'http:' Functional Specification: This ENUMservice indicates that the resource identified by the associated URI scheme is capable of being a source of information. It has to be noted that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'http:' URI provides a document. This document can contain references that will trigger download of many different kinds of information, like audio or video or executable code. Thus, one can not be more specific about the kind of information that can be expected when contacting the resource. Security Considerations: See section 5 of [RFC4002]. Intended Usage: COMMON Authors: Rudolf Brandner (rudolf.brandner&siemens.com) Lawrence Conroy (lwc&roke.co.uk) Richard Stastny (richard.stastny&oefeg.at) Any other information the author deems interesting: None [RFC4002] Hoeneisen & Mayrhofer Standards Track [Page 50] RFC 6118 Update Legacy Enumservice Registrations March 2011 Service Name: "web" Type: "web" Subtype: "https" URI Scheme: 'https:' Functional Specification: This ENUMservice indicates that the resource identified by the associated URI scheme is capable of being a source of information, which can be contacted by using TLS or Secure Socket Layer protocol. It has to be noted that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'https:' URI provides a document. This document can contain all different kind of information, like audio or video or executable code. Thus, one can not be more specific what information to expect when contacting the resource. Security Considerations: See section 5 of [RFC4002]. Intended Usage: COMMON Authors: Rudolf Brandner (rudolf.brandner&siemens.com) Lawrence Conroy (lwc&roke.co.uk) Richard Stastny (richard.stastny&oefeg.at) Any other information the author deems interesting: None [RFC4002] Service Name: "ft" Type: "ft" Subtype: "ftp" URI Scheme: 'ftp:' Functional Specification: This ENUMservice indicates that the resource identified by the associated URI scheme is a file service from which a file or file listing can be retrieved. Security Considerations: See section 5 of [RFC4002]. Intended Usage: COMMON Authors: Rudolf Brandner (rudolf.brandner&siemens.com) Lawrence Conroy (lwc&roke.co.uk) Richard Stastny (richard.stastny&oefeg.at) Any other information the author deems interesting: None [RFC4002] Hoeneisen & Mayrhofer Standards Track [Page 51] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "email" Enumservice Type: "email" Enumservice Subtype: "mailto" URI Scheme: 'mailto:' Functional Specification: This Enumservice indicates that the remote resource can be addressed by the associated URI scheme in order to send an email. Security Considerations: See Section 6 of [RFC4355] Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: None Enumservice Name: "fax" Enumservice Type: "fax" Enumservice Subtype: "tel" URI Scheme: 'tel:' Functional Specification: This Enumservice indicates that the resource identified by the associated URI scheme is capable of being contacted to provide a communication session during which facsimile documents can be sent. A client selecting this NAPTR will have support for generating and sending facsimile documents to the recipient using the PSTN session and transfer protocols specified in [12] and [13] in [RFC4355] - in short, they will have a fax program with a local or shared PSTN access over which they can send faxes. Security Considerations: See Section 6 of [RFC4355] Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: None Hoeneisen & Mayrhofer Standards Track [Page 52] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "sms" Enumservice Type: "sms" Enumservice Subtypes: "tel" URI Scheme: 'tel:' Functional Specification: This Enumservice indicates that the resource identified by the associated URI scheme is capable of receiving a message using the Short Message Service (SMS) [14] in [RFC4355]. Security Considerations: There are no specific security issues with this Enumservice. However, the general considerations of Section 6 apply. Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: None Enumservice Name: "sms" Enumservice Type: "sms" Enumservice Subtypes: "mailto" URI Scheme: 'mailto:' Functional Specification: This Enumservice indicates that the resource identified by the associated URI scheme is capable of receiving a message using an email protocol. SMS content is sent over SMTP using the format specified by TS 23.140 [15] section 8.4.4 and TS 26.140 [16] section 4 (for references see [RFC4355]), as an MMS message. Within such a message, SMS content is carried as either a text or application/octet-stream MIME sub-part (see TS 26.140 [16] , section 4.1) For references see [RFC4355]. Security Considerations: There are no specific security issues with this Enumservice. However, the general considerations of Section 6 apply, see [RFC4355]. Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: None Hoeneisen & Mayrhofer Standards Track [Page 53] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "ems" Enumservice Type: "ems" Enumservice Subtype: "tel" URI Scheme: 'tel:' Functional Specification: This Enumservice indicates that the resource identified by the associated URI scheme is capable of receiving a message using the Enhanced Message Service (EMS) [14] (For reference see [RFC4355]). Security Considerations: There are no specific security issues with this Enumservice. However, the general considerations of Section 6 apply. See [RFC4355] Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: Note that an indication of EMS can be taken as implying that the recipient is capable of receiving SMS messages at this address as well. Enumservice Name: "ems" Enumservice Type: "ems" Enumservice Subtypes: "mailto" URI Scheme: 'mailto:' Functional Specification: This Enumservice indicates that the resource identified by the associated URI scheme is capable of receiving a message using an email protocol. EMS content is sent over SMTP using the format specified by TS 23.140 [15] section 8.4.4 and TS 26.140 [16] section 4, as an MMS message. Within such a message, EMS content is carried as either a text or application/octet-stream MIME sub-part (see TS 26.140 [16] , section 4.1). For references see [RFC4355] Security Considerations: There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of [RFC4355] apply. Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: None Hoeneisen & Mayrhofer Standards Track [Page 54] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "mms" Enumservice Type: "mms" Enumservice Subtype: "tel" URI Scheme: 'tel:' Functional Specification: This Enumservice indicates that the resource identified by the associated URI scheme is capable of receiving a message using the Multimedia Messaging Service (MMS) [15]. For references see [RFC4355] Security Considerations: There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of [RFC4355] apply. Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: Note that MMS can be used as an alternative to deliver an SMS RP-DATA RPDU if, for example, the SMS bearer is not supported. If an entry includes this Enumservice, then in effect this can be taken as implying that the recipient is capable of receiving EMS or SMS messages at this address. Such choices on the end system design do have two small caveats; whilst in practice all terminals supporting MMS today support SMS as well, it might not necessarily be the case in the future, and there may be tariff differences in using the MMS rather than using the SMS or EMS. Enumservice Name: "mms" Enumservice Type: "mms" Enumservice Subtypes: "mailto" URI Scheme: 'mailto:' Functional Specification: This Enumservice indicates that the resource identified by the associated URI scheme is capable of receiving a message using an email protocol. MMS messages are sent over SMTP using the format specified by TS 23.140 [15] section 8.4.4 and TS 26.140 [16] section 4. Within and between MMS Environments (MMSE, network infrastructures that support the MultiMedia Service), other pieces of state data (for example, charging-significant information) are exchanged between MMS Relay Servers. Thus, although these servers use SMTP as the "bearer" for their application exchanges, they map their internal state to specialised headers carried in the SMTP message exchanges. The headers used in such MMSE are described in detail in [17]. For references see [RFC4355] Hoeneisen & Mayrhofer Standards Track [Page 55] RFC 6118 Update Legacy Enumservice Registrations March 2011 Security Considerations: There are no specific security issues with this Enumservice. However, the general considerations of Section 6 of [RFC4355] apply. Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see [RFC4355]) Any other information the author deems interesting: The MMS Architecture describes an interface between the MMSE and "legacy messaging systems" (labelled as MM3) which accepts "standard" SMTP messages. Thus although the MMS Relay Server that supports this interface appears as a standard SMTP server from the perspective of an Internet-based mail server, it acts as a gateway and translator, adding the internal state data that is used within and between the MMS Environments. This mechanism is described in [17], which also includes references to the specifications agreed by those bodies responsible for the design of the MMS. Service Name: E.164 to VPIM MailTo: URL URI Type: "Mailto:" Type: VPIM Subtype: MAILTO Functional Specification: See section 4.2 through 4.4 of [RFC4238] Intended Usage: COMMON Author: Greg Vaudreuil (gregv&ieee.org) Error Conditions: o E.164 number not in the numbering plan o E.164 number in the numbering plan, but no URLs exist for that number o E2U+VPIM:Mailto Service unavailable Security Considerations: o Malicious Redirection One of the fundamental dangers related to any service such as this is that a malicious entry in a resolver's database will cause clients to resolve the E.164 into the wrong email URL. The possible intent may be to cause the client to send the information to an incorrect destination. o Denial of Service By removing the URL to which the E.164 maps, a malicious intruder may remove the client's ability to access the resource. o Unsolicited Bulk Email The exposure of email addresses through the ENUM service provides a bulk mailer access to large numbers of email addresses where only the telephone number was previously known. Hoeneisen & Mayrhofer Standards Track [Page 56] RFC 6118 Update Legacy Enumservice Registrations March 2011 Service Name: E.164 to VPIM LDAP URL URI Type: "LDAP:" Type: VPIM Subtype: LDAP Functional Specification: See section 3.2 through 3.3 of [RFC4238] Intended Usage: COMMON Author: Greg Vaudreuil (gregv&ieee.org) Security Considerations: o Malicious Redirection One of the fundamental dangers related to any service such as this is that a malicious entry in a resolver's database will cause clients to resolve the E.164 into the wrong LDAP URL. The possible intent may be to cause the client to connect to a rogue LDAP server and retrieve (or fail to retrieve) a resource containing fraudulent or damaging information. o Denial of Service By removing the URL to which the E.164 maps, a malicious intruder may remove the client's ability to access the LDAP directory server. Enumservice Name: "voice" Enumservice Type: "voice" Enumservice Subtype: "tel" URI Scheme: 'tel:' Functional Specification: The kind of communication indicated by this Enumservice is "Interactive Voice". From a protocol perspective, this communication is expected to involve bidirectional media streams carrying audio data. A client may imply that the person controlling population of a NAPTR holding this Enumservice indicates their capability to engage in an interactive voice session when contacted using the URI generated by this NAPTR. Security Considerations: See Section 5 of [RFC4415] Intended Usage: COMMON Authors: Rudolf Brandner, Lawrence Conroy, Richard Stastny (for author contact detail see Authors' Addresses section) Any other information the author deems interesting: o This Enumservice indicates that the person responsible for the NAPTR is accessible via the PSTN (Public Switched Telephone Network) or PLMN (Public Land Mobile Network) using the value of the generated URI. o The kind of subsystem required to initiate a Voice Enumservice with this sub-type is a "Dialler". This is a subsystem that either provides a local connection to the PSTN or PLMN, or that provides an indirect connection to those networks. The Hoeneisen & Mayrhofer Standards Track [Page 57] RFC 6118 Update Legacy Enumservice Registrations March 2011 subsystem will use the telephone number held in the generated URI to place a voice call. The voice call is placed to a network that uses E.164 numbers to route calls to an appropriate destination. o Note that the PSTN/PLMN connection may be indirect. The end user receiving this NAPTR may have a relationship with a Communications Service Provider that accepts call initiation requests from that subsystem using an IP-based protocol such as SIP or H.323, and places the call to the PSTN using a remote gateway service. In this case the Provider may either accept requests using "tel:" URIs or has a defined mechanism to convert "tel:" URI values into a "protocol-native" form. o The "tel:" URI value SHOULD be fully qualified (using the "global phone number" form of RFC3966 [10]). A "local phone number" as defined in that document SHOULD NOT be used unless the controller of the zone in which the NAPTR appears is sure that it can be distinguished unambiguously by all clients that can access the resource record and that a call from their network access points can be routed to that destination. Enumservice Name: "pstn" Enumservice Type: "pstn" Enumservice Subtype: "tel" URI Scheme: 'tel:' Functional Specification: These Enumservices indicate that the remote resource identified can be addressed by the associated URI scheme in order to initiate a telecommunication session, which may include two-way voice or other communications, to the PSTN. These URIs may contain number portability data as specified in RFC 4694 [10]. Security Considerations: See Section 7 of [RFC4769]. Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Richard Shockey (richard.shockey&neustar.biz) Any other information the author deems interesting: A Number Portability Dip Indicator (npdi) should be used in practice (see examples below in Section 4 of [RFC4769]). Hoeneisen & Mayrhofer Standards Track [Page 58] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "pstn" Enumservice Type: "pstn" Enumservice Subtype: "sip" URI Scheme: 'sip:' Functional Specification: These Enumservices indicate that the remote resource identified can be addressed by the associated URI scheme in order to initiate a telecommunication session, which may include two-way voice or other communications, to the PSTN. Security Considerations: See Section 7 of [RFC4769]. Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Richard Shockey (richard.shockey&neustar.biz) Any other information the author deems interesting: A Number Portability Dip Indicator (npdi) should be used in practice (see examples below in Section 4 of [RFC4769]). Enumservice Name: "vCard" Enumservice Name: "vCard" Enumservice Type: "vcard" Enumservice Subtype: n/a URI Schemes: "http", "https" Functional Specification: This Enumservice indicates that the resource identified is a plain vCard, according to RFC 2426, which may be accessed using HTTP/ HTTPS [7]. Clients fetching the vCard from the resource indicated should expect access to be restricted. Additionally, the comprehension of the data provided may vary depending on the client's identity. Security Considerations: see Section 5 [RFC4969] Intended Usage: COMMON Author: Alexander Mayrhofer Enumservice Name: "XMPP" Enumservice Type: "xmpp" Enumservice Subtype: n/a URI Schemes: "xmpp" Functional Specification: This Enumservice indicates that the resource identified is an XMPP entity. Security Considerations: see Section 6 of [RFC4979] Intended Usage: COMMON Author: Alexander Mayrhofer Hoeneisen & Mayrhofer Standards Track [Page 59] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "im" Enumservice Type: "im" Enumservice Subtypes: N/A URI scheme(s): "im:" Functional Specification: This Enumservice indicates that the resource identified is an 'im:' URI. The 'im:' URI scheme does not identify any particular protocol that will be used to handle instant messaging receipt or delivery, rather the mechanism in RFC 3861 [4] is used to discover whether an IM protocol supported by the party querying ENUM is also supported by the target resource. Security considerations: See section 3 of [RFC5028] Intended usage: COMMON Author: Rohan Mahy (rohan&ekabal.com) Enumservice Name: "voicemsg" Enumservice Type: "voicemsg" Enumservice Subtypes: "sip" URI Schemes: 'sip:' Functional Specification: This Enumservice indicates that the remote resource identified can be addressed by the associated URI scheme in order to initiate a voice communication session to a voice messaging system. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "voicemsg" Enumservice Type: "voicemsg" Enumservice Subtypes: "sips" URI Schemes: 'sips:' Functional Specification: This Enumservice indicates that the remote resource identified can be addressed by the associated URI scheme in order to initiate a voice communication session to a voice messaging system. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Hoeneisen & Mayrhofer Standards Track [Page 60] RFC 6118 Update Legacy Enumservice Registrations March 2011 Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "voicemsg" Enumservice Type: "voicemsg" Enumservice Subtype: "tel" URI Schemes: 'tel:' Functional Specification: This Enumservice indicates that the remote resource identified can be addressed by the associated URI scheme in order to initiate a voice communication session to a voice messaging system. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "voicemsg" Enumservice Type: "voicemsg" Enumservice Subtype: "http" URI Schemes: 'http:' Functional Specification: This Enumservice indicates that the remote resource identified by the associated URI scheme is capable of being a source of information. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'http:' [11] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even voice message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Hoeneisen & Mayrhofer Standards Track [Page 61] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "voicemsg" Enumservice Type: "voicemsg" Enumservice Subtype: "https" URI Schemes: 'https:' Functional Specification: This Enumservice indicates that the remote resource identified by the associated URI scheme is capable of being a source of information, which can be contacted using TLS or the Secure Socket Layer protocol. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'https:' [12] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even voice message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "videomsg" Enumservice Type: "videomsg" Enumservice Subtypes: "sip" URI Schemes: 'sip:' Functional Specification: This Enumservice indicates that the remote resource identified can be addressed by the associated URI scheme in order to initiate a video communication session to a video messaging system. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Hoeneisen & Mayrhofer Standards Track [Page 62] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "videomsg" Enumservice Type: "videomsg" Enumservice Subtypes: "sips" URI Schemes: 'sips:' Functional Specification: This Enumservice indicates that the remote resource identified can be addressed by the associated URI scheme in order to initiate a video communication session to a video messaging system. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "videomsg" Enumservice Type: "videomsg" Enumservice Subtype: "http" URI Schemes: 'http:' Functional Specification: This Enumservice indicates that the remote resource identified by the associated URI scheme is capable of being a source of information. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'http:' [11] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Hoeneisen & Mayrhofer Standards Track [Page 63] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "videomsg" Enumservice Type: "videomsg" Enumservice Subtype: "https" URI Schemes: 'https:' Functional Specification: This Enumservice indicates that the remote resource identified by the associated URI scheme is capable of being a source of information, which can be contacted using TLS or the Secure Socket Layer protocol. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'https:' [12] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "unifmsg" Enumservice Type: "unifmsg" Enumservice Subtypes: "sip" URI Schemes: 'sip:' Functional Specification: This Enumservice indicates that the remote resource identified can be addressed by the associated URI scheme in order to initiate a unified communication session to a unified messaging system. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Hoeneisen & Mayrhofer Standards Track [Page 64] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "unifmsg" Enumservice Type: "unifmsg" Enumservice Subtypes: "sips" URI Schemes: 'sips:' Functional Specification: This Enumservice indicates that the remote resource identified can be addressed by the associated URI scheme in order to initiate a unified communication session to a unified messaging system. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "unifmsg" Enumservice Type: "unifmsg" Enumservice Subtype: "http" URI Schemes: 'http:' Functional Specification: This Enumservice indicates that the remote resource identified by the associated URI scheme is capable of being a source of information. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'http:' [11] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Hoeneisen & Mayrhofer Standards Track [Page 65] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "unifmsg" Enumservice Type: "unifmsg" Enumservice Subtype: "https" URI Schemes: 'https:' Functional Specification: This Enumservice indicates that the remote resource identified by the associated URI scheme is capable of being a source of information, which can be contacted using TLS or the Secure Socket Layer protocol. Note that the kind of information retrieved can be manifold. Usually, contacting a resource by an 'https:' [12] URI provides a document. This document can contain references that will trigger the download of many different kinds of information, such as text, audio, video, executable code, or even video message files. Thus, one cannot be more specific about the kind of information expected when contacting the resource. Security Considerations: See Section 3 of [RFC5278] Intended Usage: COMMON Authors: Jason Livingood (jason_livingood&cable.comcast.com) Don Troshynski (dtroshynski&acmepacket.com) Any other information the author deems interesting: Implementers should review a non-exclusive list of examples below in Section 7 of [RFC5278] Enumservice Name: "ical-sched" Enumservice Type: "ical-sched" Enumservice Subtypes: "mailto" URI scheme(s): 'mailto:' Functional Specification: This Enumservice indicates that the resource identified can be addressed by the associated URI used for scheduling using Internet calendaring via Internet mail with the iMIP [6] protocol. Security considerations: See Section 4 of [RFC5333]. Intended usage: COMMON Author: Rohan Mahy (rohan&ekabal.com) Hoeneisen & Mayrhofer Standards Track [Page 66] RFC 6118 Update Legacy Enumservice Registrations March 2011 Enumservice Name: "ical-access" Enumservice Type: "ical-access" Enumservice Subtypes: "http" URI scheme(s): 'http:' Functional Specification: This Enumservice indicates that the resource identified can be addressed by the associated URI in order to access a user's calendar (for example free/busy status) using the CalDAV [7] protocol for Internet calendaring. Security considerations: See Section 4 of [RFC5333]. Intended usage: COMMON Author: Rohan Mahy (rohan&ekabal.com) Enumservice Name: "ical-access" Enumservice Type: "ical-access" Enumservice Subtypes: "https" URI scheme(s): 'https:' Functional Specification: This Enumservice indicates that the resource identified can be addressed by the associated URI in order to access a user's calendar (for example free/busy status) using the CalDAV [7] protocol for Internet calendaring. Security considerations: See Section 4 of [RFC5333]. Intended usage: COMMON Author: Rohan Mahy (rohan&ekabal.com) Hoeneisen & Mayrhofer Standards Track [Page 67] RFC 6118 Update Legacy Enumservice Registrations March 2011 Authors' Addresses Bernie Hoeneisen Ucom Standards Track Solutions GmbH CH-8000 Zuerich Switzerland Phone: +41 44 500 52 44 EMail: bernie@ietf.hoeneisen.ch (bernhard.hoeneisen AT ucom.ch) URI: http://www.ucom.ch/ Alexander Mayrhofer enum.at GmbH Karlsplatz 1/9 Wien A-1010 Austria Phone: +43 1 5056416 34 EMail: alexander.mayrhofer@enum.at URI: http://www.enum.at/ Hoeneisen & Mayrhofer Standards Track [Page 68]