Summary

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.