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[Linphone-developers] SRTP - one way audio in iPhone/Android

From: hanson
Subject: [Linphone-developers] SRTP - one way audio in iPhone/Android
Date: Mon, 1 Apr 2013 00:13:39 +0800 (CST)

Hi All,

we have a asterisk server, the sip proxy works fine in UDP/TCP+ NON-SRTP mode in iPhone/Android, but when we enable the UDP+SRTP, the callee can not received any voices, while the caller works fine.  i capture the network log and found no RTP packets are loaded from sip server(asterisk) to callee. i don't know if it is the NAT problem in sip server? 

test cases
* in addition, i use another open source client csipsample with our asterisk server, and it works fine.
* i also set the stun server as '' or other stun server in internet, but the problem still persists.

Any suggestions or ideas would be appreciated. Thanks!


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