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
