t7345s 发表于 2015-1-26 19:36:34

ETSI EG 201 026-2 V1.1.1 (1997-08)

EG 201 026-2 V1.1.1 (1997-08)
ETSI Guide
Corporate telecommunication Networks (CN);
Standardization analysis;
Part 2: Enhanced voice and non-voice services

admin 发表于 2015-1-28 16:20:16

谢谢您的分享,金币已奖励
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