t7345s 发表于 2015-2-11 23:31:03

ETSI EG 201 973-3 V1.2.1 (2005-03)

ETSI EG 201 973-3 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 3: ISDN terminals

admin 发表于 2015-2-16 15:12:32

谢谢您的分享，金币已奖励
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