[Freeswitch-users] Callcenter application codec negotiation problem

Tue Dec 24 12:33:34 MSK 2013

It is strange behavior. If all necessary codecs are enabled, then 
negotiation should traverse all codecs until a match is found, but it 
seems that in your case, it stops with the first. As a way of isolating 
the issue, try routing calls direct to a call group and have both 
clients make calls. If you can recieve calls from both, then the issue 
is probably in the agent. I've never played with call centre before so 
unfortunately, I've got no idea what might be the issue there.

Francis

On 24/12/2013 5:38 PM, Jimmy Chang wrote:
> Hi,
>
>> I see.
>>
>> inbound_late_negotiation should *just work* without setting the other 
>> options, try removing them and leaving inbound_late_negotiation set 
>> to true.
> ya, I know, this was the default setting in my env, it didn't work.
>
>> However, I've found that negotiation and transcoding will fail if 
>> inbound_zrtp_passthru is set to true. If you are using this option, 
>> set it to false in all sip profiles. Of course, any proxy_media or 
>> bypass_media options should also be set to false.
> I set inbound_zrtp_passthru=false in all sip profiles, still didn't work.
>
>> As a last resort, try setting inbound_late_negotiation to false, 
>> which will force transcoding if codecs mismatch. Your G729 channels 
>> must be licensed or this will fail too :)
>>
> Yes, it is the last resort.
> Do these settings about codec negotiation not take effect when it 
> comes to callcenter application?
>
> Thanks.
> Jimmy
>
>>
>> On 23/12/2013 11:21 PM, Jimmy wrote:
>>> Hi,
>>> Agent and FS are both in LAN and agent register to FS.
>>> Client A and B are both in internet.
>>> Thanks.
>>>
>>>
>>> Francis <sms at icefire.qza.net.au <mailto:sms at icefire.qza.net.au>> ? 
>>> 2013/12/23 20:31 ??:
>>>
>>>> Am I right in assuming that inbound calls are coming from the 
>>>> outside world to your agent, then to A and B?
>>>>
>>>> Francis
>>>>
>>>> On 23/12/2013 9:53 PM, Jimmy Chang wrote:
>>>>> Hi,
>>>>>
>>>>> I have two clients using different codecs.
>>>>> Client A: PCMA, H264
>>>>> Client B: G729, H264
>>>>> Agent: PCMA,G729,H264
>>>>> FS:PCMA,G729,H264
>>>>>
>>>>> Now agent could only accept calls of client A but not from client B.
>>>>> When I change the codec order of FS to G729,PCMA,H264, then agent 
>>>>> could accept client B but not from client A.
>>>>> I have tried these settings below and all in vain.
>>>>> 1) add <action application="set" data="inherit_codec=true"/> in 
>>>>> diaplan (inbound-late-negotiation is true)
>>>>> 2) add <action application="export" 
>>>>> data="nolocal:absolute_codec_string=G729,H264"/> in diaplan B.
>>>>> 3) add {absolute_codec_string='G729,H264'} in callcenter 
>>>>> application, syntax error
>>>>>
>>>>> Here is the diaplan.
>>>>> <extension name="Test Call Center">
>>>>>     <condition field="destination_number" expression="^555$">
>>>>>         <action application="sleep" data="1000"/>
>>>>>         <action application="callcenter" data="555 at default"/>
>>>>>     </condition>
>>>>> </extension>
>>>>>
>>>>> How can I configure to accept both clients?
>>>>> Any advice would be appreciated.
>>>>>
>>>>> Jimmy
>>>>>
>>>>> ------------------------------------------------------------------------
>>>>> <http://www.avast.com/> 	
>>>>>
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>>>>>
>>>>>
>>>>>
>>>>>
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>>
>>
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>
>
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>
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>
>
>
>
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