RFC 2846 (rfc2846) - Page 2 of 35
GSTN Address Element Extensions in E-mail Services
Alternative Format: Original Text Document
RFC 2846 GSTN Address Extensions in E-mail Services June 2000
- the message originator and/or recipient specification (pstn-
recipient)
GSTN addresses in e-mail MAY contain additional elements defined and
registered in other specifications (see for example "T33S" element in
[2]), but they MUST use definitions contained in this memo for those
elements specified here.
In particular, "service-selector" names and "qualif-type1" elements
MUST be registered with IANA, and published within the "ASSIGNED
NUMBERS" document. This provides a standard mechanism for extending
the element sets and should avoid unnecessary duplication. IANA
Registration form templates for the purpouse of registering new
elements are provided in Appendix B. In addition the IANA
consideration section of this document defines the procedures
required to proceed with new registrations.
A collection of forms for already defined "service-selector" and
"qualif-type1" elements is listed in appendix C and appendix D
respectively.
In particular, efforts have been made to maintain compatibility with
elements defined in existing e-mail gateway services and standard
specifications. For example, to the extent possible, compatibility
has been maintained with the MIXER [3] gateways specifications.
1.1 Relationship with Internet addressing other than e-mail
Even if in this memo we focus on e-mail addresses, a number of
elements defined in this specification can also be used for other
specifications dealing with embedding GSTN addresses into other
addresses: for example there is some work in progress about URLs
specification which adopts similar definitions, with slight changes
in the global syntax due to specific URL format.
1.2 Terminology and Syntax conventions
In this document the formal definitions are described using ABNF
syntax, as defined into [4]. We will also use some of the "CORE
DEFINITIONS" defined in "APPENDIX A - CORE" of that document. The
exact meaning of the capitalised words
"MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD",
"SHOULD NOT", "RECOMMENDED", "MAY", "OPTIONAL"
is defined in reference [5].
Allocchio Standards Track