International Telecommunications Union, ITU Recommendation Z.120: Message Sequence Chart (MSC), (04/04), ITU-T, 2004.

国际电信组织,ITURecommendation Z.120:消息序列图 (MSC), (04/04),ITU-T, 2004.

youdao

International Telecommunications Union, ITU Recommendation Z.120: Message Sequence Chart (MSC), (04/04), ITU-T, 2004.

国际电信组织,ITURecommendation Z.120:消息序列图 (MSC), (04/04),ITU-T, 2004.

youdao