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dujinfang at gmail.com
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 Posted: Fri May 08, 2009 2:07 am Post subject: [Freeswitch-users] iLBC codec 97 or 102 |
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Hi,
We have FreesSWITCH runing on version 11066, which INVITE with
iLBC@30i number 102, however the recent version INVITE with iLBC@30i
number 97. Unfortunately I have a broken sip client only talks with
RTP payload 102. So here is the question:
1) What's the difference between 97 and 102? The default value changed
since version 11066?
2) Is it configurable? Is it part of sofia-lib or FS?
Thank you.
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brian at freeswitch.org
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| Posted: Fri May 08, 2009 2:19 am Post subject: [Freeswitch-users] iLBC codec 97 or 102 |
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Once you're in dynamic range you should compare the codec name not number.
/b
On May 8, 2009, at 2:04 AM, seven wrote:
| Quote: | Hi,
We have FreesSWITCH runing on version 11066, which INVITE with
iLBC@30i number 102, however the recent version INVITE with iLBC@30i
number 97. Unfortunately I have a broken sip client only talks with
RTP payload 102. So here is the question:
1) What's the difference between 97 and 102? The default value changed
since version 11066?
|
Should be no difference.
| Quote: | 2) Is it configurable? Is it part of sofia-lib or FS?
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Nope shouldn't matter.
Brian West
brian@freeswitch.org (brian@freeswitch.org)
-- Meet us at ClueCon! http://www.cluecon.com |
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dujinfang at gmail.com
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| Posted: Fri May 08, 2009 2:50 am Post subject: [Freeswitch-users] iLBC codec 97 or 102 |
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On May 8, 2009, at 3:18 PM, Brian West wrote: | Quote: | Once you're in dynamic range you should compare the codec name not number.
/b
On May 8, 2009, at 2:04 AM, seven wrote:
| Quote: | Hi,
We have FreesSWITCH runing on version 11066, which INVITE with
iLBC@30i number 102, however the recent version INVITE with iLBC@30i
number 97. Unfortunately I have a broken sip client only talks with
RTP payload 102. So here is the question:
1) What's the difference between 97 and 102? The default value changed
since version 11066?
|
Should be no difference.
| Quote: | 2) Is it configurable? Is it part of sofia-lib or FS?
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Nope shouldn't matter.
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Thank you. It must be changeable somewhere in the source code, can you help me to find out? I want it send 102 by default.
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brian at freeswitch.org
Guest
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| Posted: Fri May 08, 2009 3:01 am Post subject: [Freeswitch-users] iLBC codec 97 or 102 |
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No thats not how the dynamic range works. You can change it in mod_ilbc.c but again NOT the right way. Your phone is broken and should be fixed.
/b
On May 8, 2009, at 2:50 AM, seven wrote:
| Quote: | | Thank you. It must be changeable somewhere in the source code, can you help me to find out? I want it send 102 by default. |
Brian West
brian@freeswitch.org (brian@freeswitch.org)
-- Meet us at ClueCon! http://www.cluecon.com |
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dujinfang at gmail.com
Guest
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| Posted: Fri May 08, 2009 4:05 am Post subject: [Freeswitch-users] iLBC codec 97 or 102 |
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But there is only two 30ms variants,
SWITCH_CODEC_TYPE_AUDIO, 97, "iLBC", "mode=20",
SWITCH_CODEC_TYPE_AUDIO, 98, "iLBC", "mode=30",
SWITCH_CODEC_TYPE_AUDIO, 102, "iLBC", "mode=30",
Why FS INVITE with mode=30 and 97 but not 98/102 as I'm using iLBC@30i ?
v=0
o=FreeSWITCH 6662257026041736756 6335871247713715835 IN IP4 202.102.135.76
s=FreeSWITCH
c=IN IP4 202.102.135.76
t=0 0
m=audio 20820 RTP/AVP 97 101 13
a=rtpmap:97 iLBC/8000
a=fmtp:97 mode=30
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:13 CN/8000
a=ptime:30
On May 8, 2009, at 3:55 PM, Brian West wrote: |
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brian at freeswitch.org
Guest
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| Posted: Fri May 08, 2009 8:44 am Post subject: [Freeswitch-users] iLBC codec 97 or 102 |
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actually I think we can remove the 102 version that was there for some google talk thing and I don't think we they do that anymore I'll have to test but ... if we invite to you with mod=30 you have to do 30 no exceptions as per the iLBC spec.
/b
On May 8, 2009, at 4:04 AM, seven wrote:
| Quote: | But there is only two 30ms variants,
SWITCH_CODEC_TYPE_AUDIO, 97, "iLBC", "mode=20",
SWITCH_CODEC_TYPE_AUDIO, 98, "iLBC", "mode=30",
SWITCH_CODEC_TYPE_AUDIO, 102, "iLBC", "mode=30",
Why FS INVITE with mode=30 and 97 but not 98/102 as I'm using iLBC@30i ?
v=0
o=FreeSWITCH 6662257026041736756 6335871247713715835 IN IP4 202.102.135.76
s=FreeSWITCH
c=IN IP4 202.102.135.76
t=0 0
m=audio 20820 RTP/AVP 97 101 13
a=rtpmap:97 iLBC/8000
a=fmtp:97 mode=30
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:13 CN/8000
a=ptime:30
|
Brian West
brian@freeswitch.org (brian@freeswitch.org)
-- Meet us at ClueCon! http://www.cluecon.com |
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dujinfang at gmail.com
Guest
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| Posted: Fri May 08, 2009 9:44 am Post subject: [Freeswitch-users] iLBC codec 97 or 102 |
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On May 8, 2009, at 9:32 PM, Brian West wrote: | Quote: | actually I think we can remove the 102 version that was there for some google talk thing and I don't think we they do that anymore I'll have to test but ... if we invite to you with mod=30 you have to do 30 no exceptions as per the iLBC spec.
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sure the client is broken. but it only do the right thing when you invite me with 102 and mod=30.
Please don't remove the 102 before I had my client fixed 
btw, client can invite with 102 to FS without problem.
Thank you again. I think I can make the client work by remove the other versions. If we need multi versions in the future,, I'd like to make a patch make it configurable.
| Quote: | /b
On May 8, 2009, at 4:04 AM, seven wrote:
| Quote: | But there is only two 30ms variants,
SWITCH_CODEC_TYPE_AUDIO, 97, "iLBC", "mode=20",
SWITCH_CODEC_TYPE_AUDIO, 98, "iLBC", "mode=30",
SWITCH_CODEC_TYPE_AUDIO, 102, "iLBC", "mode=30",
Why FS INVITE with mode=30 and 97 but not 98/102 as I'm using iLBC@30i ?
v=0
o=FreeSWITCH 6662257026041736756 6335871247713715835 IN IP4 202.102.135.76
s=FreeSWITCH
c=IN IP4 202.102.135.76
t=0 0
m=audio 20820 RTP/AVP 97 101 13
a=rtpmap:97 iLBC/8000
a=fmtp:97 mode=30
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtpmap:13 CN/8000
a=ptime:30
|
Brian West
brian@freeswitch.org (brian@freeswitch.org)
-- Meet us at ClueCon! http://www.cluecon.com
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