[Linphone-developers] SDP Error

[Michel Ferreira Bueno]

Hello,

When call from linphone for iOS to one of my SIP clients, the call is aborted as soon as it is answered. The linphone shows the message: "Call failed. Reason was: Incompatible, check codecs or security settings."

I couldn’t find whats wrong. Can somebody help?

The INVITE message from linphone:

v=0

o=803 2833 1977 IN IP4 192.168.199.102

s=Talk

c=IN IP4 192.168.199.102

b=AS:380

t=0 0

m=audio 7076 RTP/AVP 0 8 101

a=rtpmap:101 telephone-event/8000

And the 200 OK response to it:

v=0

o=0 0 0 IN IP4 192.168.199.104

s=Dahua VT 1.5

c=IN IP4 192.168.199.104

t=0 0

m=audio 15000 RTP/AVP 0

a=rtpmap:0 PCMU/8000

One of the log messages says this: "Incompatible SDP offer received in 200 OK, need to abort the call"

Any hint what is happening here?

Thanks,

Michel Bueno