| A digital modem and analogue modem pair for use on the Public Switched Telephone Network (PSTN) at data signalling rates of up to 56 000 bit/s downstream and up to 33 600 bit/s upstream |
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This Recommendation specifies the operation of a digital modem and analogue modem pair for use on the Public Switched Telephone Network (PSTN) at data signalling rates of up to 56 000 bit/s in the downstream direction and up to 33 600 bit/s in the upstream direction. The two modems are specified herein in terms of coding, start-up signals and sequences, operating procedures and DTE-DCE interface functionalities. The network interface of the digital modem and the signalling rate that is used to connect the digital modem locally to a digital switched network are considered to be national matters and are hence not specified herein. |
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| Citation: |
https://handle.itu.int/11.1002/1000/4493 |
| Series title: |
V series: Data communication over the telephone network
V.60-V.99: Simultaneous transmission of data and other signals |
| Approval date: |
1998-09-25 |
| Approval process: | TAP |
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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)
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| Ed. |
ITU-T Recommendation |
Status |
Summary |
Table of Contents |
Download |
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1
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V.90 (09/1998)
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In force
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here
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-
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here
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