Hello Nitin Kapoor,
Do you have the first OFFER and ANSWER ?
The first offer CODECS: 4 18 101 , we have to see the ANSWER , at
moment looks ok , the session-ID is "o=Sonus_UAC 16515 29422"
v=0
o=Sonus_UAC 16515 29422 IN IP4 209.58.46.49
s=SIP Media Capabilities
c=IN IP4 209.58.46.40
t=0 0
m=audio 11516 RTP/AVP 4 18 101
a=rtpmap:4 G723/8000
a=fmtp:4 bitrate=6.3
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
a=maxptime:30
now the second OFFER , by re-invite codec G729 , the CODEC now is a
new One and the maxptime can be changed to 20 , and the session-ID tell
us that there is a new offer , session-id increase " o=Sonus_UAC 16515
29423"
v=0
o=Sonus_UAC 16515 29423 IN IP4 209.58.46.49
s=SIP Media Capabilities
c=IN IP4 209.58.46.40
t=0 0
m=audio 11516 RTP/AVP 18
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=sendrecv
a=maxptime:20
+++++++++++++++++++++
G723 --> packetization period can be 10 , 20 , 30 ms
G729 --> The max packetization period is 20 ms
+++++++++++++++++++++
Codec Information
Bandwidth Calculations
Codec & Bit Rate (Kbps)
Codec Sample Size (Bytes)
Codec Sample Interval (ms)
Mean Opinion Score (MOS)
Voice Payload Size (Bytes)
Voice Payload Size (ms)
Packets Per Second (PPS)
Bandwidth MP or FRF.12 (Kbps)
Bandwidth w/cRTP MP or FRF.12 (Kbps)
Bandwidth Ethernet (Kbps)
G.711 (64 Kbps)
80 Bytes
10 ms
4.1
160 Bytes
20 ms
50
82.8 Kbps
67.6 Kbps
87.2 Kbps
G.729 (8 Kbps)
10 Bytes
10 ms
3.92
20 Bytes
20 ms
50
26.8 Kbps
11.6 Kbps
31.2 Kbps
G.723.1 (6.3 Kbps)
24 Bytes
30 ms
3.9
24 Bytes
30 ms
33.3
18.9 Kbps
8.8 Kbps
21.9 Kbps
G.723.1 (5.3 Kbps)
20 Bytes
30 ms
3.8
20 Bytes
30 ms
33.3
17.9 Kbps
7.7 Kbps
20.8 Kbps
G.726 (32 Kbps)
20 Bytes
5 ms
3.85
80 Bytes
20 ms
50
50.8 Kbps
35.6 Kbps
55.2 Kbps
G.726 (24 Kbps)
15 Bytes
5 ms
60 Bytes
20 ms
50
42.8 Kbps
27.6 Kbps
47.2 Kbps
G.728 (16 Kbps)
10 Bytes
5 ms
3.61
60 Bytes
30 ms
33.3
28.5 Kbps
18.4 Kbps
31.5 Kbps
G722_64k(64 Kbps)
80 Bytes
10 ms
4.13
160 Bytes
20 ms
50
82.8 Kbps
67.6Kbps
87.2 Kbps
ilbc_mode_20(15.2Kbps)
38 Bytes
20 ms
NA
38 Bytes
20 ms
50
34.0Kbps
18.8 Kbps
38.4Kbps
ilbc_mode_30(13.33Kbps)
Regards!
Valdemar
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of ext
Nitin Kapoor
Sent: Wednesday, November 30, 2011 1:53 PM
To: [email protected]
Cc: [email protected]
Subject: [Sip-implementors] 488 Not Acceptable Here
Dear Friends,
I am facing the problem with one of my customer where first the calls
has
been connected successfully and then UAC sends the re-invite my SBC
sends
488 back to UAC.
When UAC sends the Initial OFFER i had below SDP. (UAC --- SBC) and i
can
see the "ptime" value is 30 and calls established.
v=0
o=Sonus_UAC 16515 29422 IN IP4 209.58.46.49
s=SIP Media Capabilities
c=IN IP4 209.58.46.40
t=0 0
m=audio 11516 RTP/AVP 4 18 101
a=rtpmap:4 G723/8000
a=fmtp:4 bitrate=6.3
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
a=maxptime:30
Now when UAC sends the re-invite we have below SDP. If you can see in
re-invite "ptime" value has been changed.. Is that acceptable? Or you
have
seen any other thing in SDP.
v=0
o=Sonus_UAC 16515 29423 IN IP4 209.58.46.49
s=SIP Media Capabilities
c=IN IP4 209.58.46.40
t=0 0
m=audio 11516 RTP/AVP 18
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=sendrecv
a=maxptime:20
Could anyone please give some shadow on this. Thanks in Advance.
Regards,
Nitin Kapoor
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