Agent/RTP or Agent/UDP

[zl@imail.com.cn]

Dear Sir:
I am using ns-2 to simulate a simple RTP flow. But I am not sure about the agent.
Application is Exponential,it has a parameter called packet_size_;
Agent is Agent/RTP,it has a parameter called Packetsize_.
My application packet is 160-byte long.

Whether I set Packetsize_ at Agent/RTP or not?
If it should be set,set it as 160 or 160+12=172?
I search the tracing result for packetsize and find the packetsize_ in Agent/RTP may be decisive.

Or, I must use Agent/UDP instead of Agent/RTP,but how to add RTP overhead?

Thanks for reading my question.Better give me some suggestion.

Zhang Lei

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