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ITU-T V.152 (2005) Amd. 1 (03/2009)

New Annex B - Use of data signal detection and silence insertion in voiceband data, and new Annex C on use of V.21 preamble for echo canceller control in a V.152 gateway

Annex B to Recommendation ITU-T V.152 defines a method that uses data signal detection and silence insertion in voiceband data that adds a means of providing bandwidth savings during transmission. Annex C to Recommendation ITU-T V.152 addresses a problem discovered during the implementation of V.152 gateways with the transmission of facsimile terminals. While this issue has been resolved by an amendment to Recommendation ITU-T T.30, due to the extremely large numbers of terminals deployed in the field and the low probability that they would be corrected retroactively, it was considered pre-emptive to include a solution in a V.152 media gateway.

Citation:	https://handle.itu.int/11.1002/1000/9722
Series title:	V series: Data communication over the telephone network V.100-V.199: Interworking with other networks
Approval date:	2009-03-16
Provisional name:	V.VBD
Approval process:	AAP
Status:	Superseded
Maintenance responsibility:	ITU-T Study Group 21
Further details:	Patent statement(s) Development history

EditionsImplementer's guide(s)

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
2	V.152 (09/2010)	In force	here	here	here
1.3	V.152 (2005) Amd. 1 (03/2009)	Superseded	here	here	here
1.2	V.152 (2005) Cor. 2 (05/2006)	Superseded	here	-	here
1.1	V.152 (2005) Cor. 1 (09/2005)	Superseded	here	here	here
1	V.152 (01/2005)	Superseded	here	here	here

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ITU-T Recommendations

ITU-T V.152 (2005) Amd. 1 (03/2009)