| Serial asynchronous automatic dialling and control |
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This version of ITU-T Rec. V.250 integrates Amendment 1 (07/2001), Amendment 2 (03/2002) and Amendment 3 (07/2003) with the 05/1999 version of the Recommendation.This Recommendation defines commands and responses for use by a DTE to control a V-series DCE using serial data interchange over an asynchronous interface. It contains four elements:- codifies existing practice in common GSTN-DCE that use the ATtention (AT) command set;- defines a format for orderly extension of the AT command set;- provides a set for standardized extensions for common functions to identify the DCE, to control the DTE-DCE interface, and to control DCE-DCE protocols (signal conversion, error control and data compression);- provides a mapping for these commands into V.25 bis frame format for use with DCEs employing synchronous serial interfaces. |
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| Citation: |
https://handle.itu.int/11.1002/1000/6484 |
| Series title: |
V series: Data communication over the telephone network
V.250-V.299: Control procedures |
| Approval date: |
2003-07-14 |
| Provisional name: | V.at |
| Approval process: | AAP |
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Status: |
In force |
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Maintenance responsibility: |
ITU-T Study Group 21 |
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Further details: |
Patent statement(s)
Development history
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