t7345s 发表于 2015-2-11 23:28:52

ETSI EG 201 973-1 V1.2.1 (2005-03)

ETSI EG 201 973-1 V1.2.1 (2005-03)
ETSI Guide
Access and Terminals (AT);
Public Switched Telephone Network;
Support of legacy terminals
by Broadband IP networks and equipment;
Part 1: General (common part covering
both PSTN Analogue and ISDN TE)

admin 发表于 2015-2-16 15:12:27

谢谢您的分享，金币已奖励
页: [1]
查看完整版本: ETSI EG 201 973-1 V1.2.1 (2005-03)