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Network Working Group L. McIntyreRequest for Comments: 2880 Xerox CorporationCategory: Informational G. Klyne Content Technologies August 2000 Internet Fax T.30 Feature Mapping

Status of this Memo

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2000). All Rights Reserved.Abstract

This document describes how to map Group 3 fax capability

identification bits, described in ITU T.30 [6], into the Internet fax feature schema described in "Content feature schema for Internet fax"

[4].

This is a companion to the fax feature schema document [4], which

itself defines a profile of the media feature registration mechanisms

[1,2,3], for use in performing capability identification between extended Internet fax systems [5].

Table of Contents

1. Introduction .............................................3

1.1 Organization of this document ........................3

1.2 Terminology and document conventions .................3

1.3 Discussion of this document ..........................4

2. Combining feature tags ...................................4

2.1 Relationship to Group 3 fax ..........................5

2.2 Feature set descriptions .............................5

2.3 Examples .............................................5

2.3.1 Data resource example ............................6

2.3.2 Recipient capabilities example ...................6

3. Survey of media-related T.30 capability bits .............6

3.1 DIS/DTC bit 15 (resolution) ..........................6

3.2 DIS/DTC bit 16 (MR coding) ...........................7

3.3 DIS/DTC bits 17,18 (width) ...........................7

3.4 DIS/DTC bits 19,20 (length) ..........................7

McIntyre & Klyne Informational [Page 1]