GSTN Address Element Extensions in E-mail Services (RFC2846)
Original Publication Date: 2000-Jun-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
There are numerous applications where there is a need for interaction between the GSTN addressing and Internet addressing. This memo defines a full syntax for one specific case, where there is a need to represent GSTN addresses within Internet e-mail addresses. This full syntax is a superset of a minimal syntax which has been defined in .
Network Working Group C. Allocchio
Request for Comments: 2846 GARR-Italy
Category: Standards Track June 2000
GSTN Address Element Extensions in E-mail Services
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 (C) The Internet Society (2000). All Rights Reserved.
There are numerous applications where there is a need for interaction
between the GSTN addressing and Internet addressing. This memo
defines a full syntax for one specific case, where there is a need to
represent GSTN addresses within Internet e-mail addresses. This full
syntax is a superset of a minimal syntax which has been defined in
The possible elements composing a "Global Switched Telephone Network
(GSTN) address in e-mail" (also known as the Public Switched
Telephone Network - PSTN) can vary from a minimum number up to a
really large and complex collection. As noted the minimal format and
general address syntax have been defined in , along with the
mechanism needed to define additional address elements. This memo
uses this extension mechanism to complete the syntax for representing
GSTN addresses within e-mail addresses and contains the IANA
registrations for all newly defined elements.
In particular, the following additional address elements shall be
- the detailed definition of GSTN number formats, in order to cover
various alternative standard GSTN numbering schemes, (i.e. gstn-
phone, sub-addr-spec and post-dial)
- the message originator and/or recipient specification (pstn-
GSTN addresses in e-mail MAY contain additional elements defined and
registered in other specifications (see for example "T33S" element in
), 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
In particular, efforts have been made to maintain compatibil...