| Serial asynchronous automatic dialling and control |
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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 of 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/11.1002/1000/4149 |
| Series title: |
V series: Data communication over the telephone network
V.250-V.299: Control procedures |
| Approval date: |
1997-07-11 |
| Provisional name: | V.at |
| Approval process: | TAP |
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Status: |
Superseded |
| Observation: | Rec. V.25 ter was renumbered as V.250, and its Annex A as V.251 |
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Maintenance responsibility: |
ITU-T Study Group 21 |
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Further details: |
Patent statement(s)
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