ETSI EG 201 042 V1.1.1 (1997-08)
本帖最后由 t7345s 于 2014-12-25 21:59 编辑EG 201 042 V1.1.1 (1997-08)
ETSI Guide
Network Aspects (NA);
Universal Personal Telecommunication (UPT)
UPT Phase 2:
Network Functionalities for Feature Interaction
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