媒体网关控制协议、H.248和SIP的对比

目录

导言.................................................................................................................................................3 VoIP................................................................................................................................................3

有线VoIP.............................................................................................................................3 DSL上的VoIP....................................................................................................................5 信令和控制协议.............................................................................................................................6

MGCP、MEGACO和H.248..............................................................................................6 SIP.......................................................................................................................................11 比较SIP和MGCP/H.248.................................................................................................14 结论...............................................................................................................................................15 关于作者.......................................................................................................................................18