Comet Labs IPTEL-S Manual do Utilizador descarregar pdf (Página 17)

SIP Not a Transport

8/31/2005 Copyright - Ahlgren 2005 17

AhlTek

 Independent of the packet layer

 Provides its own reliability mechanism.

 Does not require a reliable datagram service

 Typically runs over UDP or TCP

 Could run over, frame relay, ATM

 Even carrier pigeons!

 Data packets most probably do not follow the

same path as the SIP control packets

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