Hi,
If a SIP request size is larger than 1300 bytes or within 200 bytes of the path
MTU then one should send the message over TCP rather than UDP.In the said
scenario the 200 bytes serves as cushioning for the responses to be generated
by the recipient, assuming that the generated response would be at most 200
bytes more.
So on the said scenario please clear my following doubts
1. Is it necessary that both ends use same transport(TCP) for the entire
transaction?
2.Is it necessary that the recipient of the SIP request send the response over
transport it received the request(i.e. TCP)?
3.If the intermediate nodes add their 'via' headers and if the response is 183
with 1st offer SDP body then will the response be more than the path MTU or
1500 bytes so that how the problem is solved?
please clear my doubts stated above and if possible give me the references.
thanks and regards
Binod K Mohanty
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