ITU-T Rec. V.250 (07/2003) iii
CONTENTS
Page
1 Introduction and scope.................................................................................................. 1
2 References..................................................................................................................... 1
2.1 Normative references...................................................................................... 1
2.2 Informative references.................................................................................... 2
3 Definitions and abbreviations....................................................................................... 3
3.1 Definitions ...................................................................................................... 3
3.2 Abbreviations ................................................................................................. 4
4 Physical layer................................................................................................................ 4
4.1 Circuits ........................................................................................................... 4
4.2 Character formatting....................................................................................... 5
4.3 Data rates ........................................................................................................ 5
5 Syntax and procedures.................................................................................................. 5
5.1 Alphabet ......................................................................................................... 5
5.2 DTE commands lines ..................................................................................... 6
5.3 Basic Syntax commands................................................................................. 7
5.4 Extended Syntax commands........................................................................... 8
5.5 Issuing commands .......................................................................................... 12
5.6 Executing commands...................................................................................... 12
5.7 DCE responses................................................................................................ 13
5.8 Manufacturer-specific characteristics............................................................. 16
6 Functions ...................................................................................................................... 17
6.1 Generic DCE control ...................................................................................... 18
6.2 DTE-DCE interface commands...................................................................... 25
6.3 Call control ..................................................................................................... 37
6.4 Modulation control commands....................................................................... 48
6.5 Error control commands ................................................................................. 60
6.6 Data compression commands ......................................................................... 68
6.7 DCE testing .................................................................................................... 73
6.8 PCM DCE commands .................................................................................... 85
6.9 V.59 Command (+TMO)................................................................................ 91
Appendix I – Summary of basic and extended format commands .......................................... 93
Appendix II – DCE configuration, dialling, negotiation and reporting, example session....... 95
Appendix III – Encapsulation of V.250 messages in V.25 bis DCE ....................................... 96
III.1 Scope .............................................................................................................. 96
III.2 Encapsulation of V.250 messages .................................................................. 96
III.3 Applicable V.250 commands ......................................................................... 96
III.4 Applicable V.250 responses ........................................................................... 97
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2012-07-04
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zaichufa2015-06-03学习 了 ，非常感谢楼主的分享，向你学习！
yutianice2013-08-19不错，感觉帮助很大
MorrisMao2012-10-23是官方文档，很详细
