Network Working Group K. Toyoda Request for Comments: 4143 PCC Category: Standards Track D. Crocker Brandenburg November 2005 Facsimile Using Internet Mail (IFAX) Service of ENUM Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2005).
AbstractThis document describes the functional specification and definition of the ENUM Naming Authority Pointer (NAPTR) record for IFax service. IFax is "facsimile using Internet mail". For this use, the Domain Name System (DNS) returns the email address of the referenced IFax system. This mechanism allows email-based fax communication to use telephone numbers instead of requiring the sender to already know the recipient email address. ENUMbis] DNS query, using the target system's telephone number. The returned NAPTR record specifies an email address to be used for reaching the target system. The email address is then used in accordance with Simple Mode of Facsimile using Internet Mail [RFC3965], Extended Facsimile using Internet Mail [RFC2532], or Full Mode Fax Profile for Internet Mail [FFPIM] is applied. The key words "MUST", "MUST NOT", "SHOULD", "SHOULD NOT", and "MAY" in this document are to be interpreted as defined in "Key words for use in RFCs to Indicate Requirement Levels" [KEYWORDS].
Internet Fax is based on existing use of Internet mail. Developers and users should also consider the Security Consideration sections in [RFC3965] and [RFC2532]. In addition to the specific security considerations given above, the Security Considerations section of [ENUMbis] applies to this document. ENUMbis]. The registration details are contained in section 2, Fax Service Registration. [KEYWORDS] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [ENUMbis] Faltstrom, P. and M. Mealling, "The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)", RFC 3761, April 2004. [RFC3965] Toyoda, K., Ohno, H., Murai, J., and D. Wing, "A Simple Mode of Facsimile Using Internet Mail", RFC 3965, December 2004. [RFC2532] Masinter, L. and D. Wing, " Extended Facsimile Using Internet Mail", RFC 2532, March 1999. [FFPIM] Crocker, D. and G. Klyne, "Full-mode Fax Profile for Internet Mail (FFPIM)", RFC 4142, November 2005.
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