It’s
really linked to the initial SDP. If I have only one codec,
for example G711u (plus telephone-event), and I just keep
G711u, a blank line is inserted.
If
I keep G711u + telephone-event, everything is working fine.
Regards,
Igor.
Hello Daniel,
I
got a feedback from the telco in the meantime. He told me
that the issue is the blank line between “rtpmap:8..” and
“nortpproxy”.
This
parameter is supported. I have successful calls with
“nortpproxy=yes”.
I
don’t know why sdp_keep_codecs_by_name inserts a blank line
here.
Regards,
Igor.
Hello,
the problem here is with rtpproxy marker -- can you try with
the parameter set to empty string?
- http://kamailio.org/docs/modules/stable/modules/rtpproxy.html#idp23856
Cheers,
Daniel
On 06/08/14 12:23, Igor Potjevlesch
wrote:
Hello,
To
be sure that the issue is not coming from append_hf, I add
(…,”Call-ID”). The PAI is now inserted after the Call-ID.
But,
the issue remains:
Content-Type:
application/sdp
Content-Length:
169
v=0
o=UserA
1153072414 140968390 IN IP4 A.B.C.D
s=Session
SDP
c=IN
IP4 A.B.C.D
t=0
0
m=audio
60412 RTP/AVP 8
a=rtpmap:8
PCMA/8000
a=nortpproxy:yes
This
SDP is dropped. Someone see something missing or wrong in
the SDP parts?
Regards,
Igor.
Hello,
I have an issue with
the module SDPOPS while using “sdp_keep_codecs_by_name”.
If the calling party
sends only one codec description like:
Content-Type:
application/sdp
Content-Length: 202
v=0
o=UserA 2966746938
1790378070 IN IP4 10.141.0.21
s=Session SDP
c=IN IP4 10.141.0.21
t=0 0
m=audio 49152 RTP/AVP
8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101
telephone-event/8000
a=fmtp:101 0-15
The result of the
function “sdp_keep_codecs_by_name("PCMA,PCMU,G729a");” is:
Content-Type:
application/sdp
Content-Length: 170
P-Asserted-Identity:
"+0123456789" <sip:+0123456789@sip.tld>
v=0
o=UserA 2485672881
3000549892 IN IP4 a.b.c.d
s=Session SDP
c=IN IP4 a.b.c.d
t=0 0
m=audio 40330 RTP/AVP 8
a=rtpmap:8 PCMA/8000
a=nortpproxy:yes
If I open the capture
in Wireshark, the PAI is not in the SDP part, and the end
of the capture after “a=rtpmap:8 PCMA/8000” is seen as
“Data (18 bytes)”.
I don’t understand why
the PAI is inserted within the SDP part. Adding the PAI is
done after “sdp_keep_codecs_by_name”:
if
(!is_present_hf("P-Asserted-Identity")) {
$var(pai)
= $(fU{re.subst,/^0/+33/g});
append_hf("P-Asserted-Identity: \"$var(pai)\" <sip:$var(pai)@$fd>\r\n");
}
I guess that this
cause my INVITE being dropped by 488 Media Not Acceptable
Here.
Regards,
Igor.
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