[SIPForum-discussion] [Q] SIP/TCP vs SIP/UDP

[김현곤]

Hi All,

 

I’m wondering if there’s any reason to prefer SIP/UDP to SIP/TCP..

 

If a phone exists behind NAT/FW, it should send REGISTER periodically, I
think.

In case of UDP, the phone just sends the REGISTER message without any
keeping up connection.

But in case of TCP, the phone should keep the TCP connection all the time,
in which I think there’re

some unexpected problem.

 

Actually I should consider the deployment of SIP/TLS and SRTP, 

and I seriously think over the possible problem that I don’t know,
especially relating the NAT/FW.

 

If you have any comments about my difficulty, please let me know..

 

Thanks in advance..

 

Peter Kim

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