Document :

ITU-T�SG16� (Study Period 2005)� Delayed Contribution� 281

Title :

V.152: use of V.21 preamble by media gateways for echo canceller control

Date :

2006-03-21

Source :

Huawei Technologies Co., Ltd.

AI/Question :

Q11/16

Access :

Restricted to TIES users�[ITU-T]