[Freeswitch-users] G.729 Passthrough question

[Guillermo Ruiz Camauer]

Steve,

Yes, all surveys are handled by DTMF with the addition of some open ended questions (not more than one or two per survey).  I only use RFC2833 for DTMF, since my SIP providers require that  I use G.729.
The open ended questions just get recorded and someone listens to them and codes them later.
DTMFs can be a pain, since some upstream providers might not support them well.  Because of the call volume I have, many times. I have alerted my Sip providers as to misconfigured routes they have with their peers.
My system has 2670 call channels, most on E1 ISDN with Dialogic cards, but 900 of those are handled by FS, since I have stopped buying E1/Dialogic 3-4 years ago and now only grow my system with VoIP and FS.
I would be glad to answer any questions regarding DTMF or anything else related to this system.

Regards,

Guillermo



Sent from my iPhone

> On 03/06/2014, at 22:49, Steve Underwood <steveu at coppice.org> wrote:
> 
> Hi Guillermo,
> 
> Are your 900 calls handling surveys by DTMF? If so I would be interested 
> to hear your experiences with the reliability of that. We still see so 
> many quirks with the handling of DTMF in VoIP applications that 
> experiences with such a large deployment are of value. Especially ones 
> using low bit rate codecs like G.729, where audio DTMF can be quite 
> troublesome.
> 
> Regards,
> Steve
> 
> 
>> On 06/04/2014 04:06 AM, Guillermo Ruiz Camauer wrote:
>> Brian,
>> 
>> Thanks for the reply.  Then if I understand correctly, you only need a 
>> G.729 license if the audio stream will get transcoded to something 
>> else? I realize that the licesnces are only $10 each, but I also have 
>> another system which does polling (surveys) which handles 900 
>> simultaneous calls.
>> 
>> Thanks,
>> 
>> Guillermo
>> 
>> 
>> On Tue, Jun 3, 2014 at 11:01 AM, Brian West <brian at freeswitch.org 
>> <mailto:brian at freeswitch.org>> wrote:
>> 
>>    You could, but licenses are cheap enough that you can buy a hand
>>    full for this purpose.
>>    --
>>    Brian West
>>    brian at freeswitch.org <mailto:brian at freeswitch.org>
>> 
>> 
>>    Twitter: @FreeSWITCH , @briankwest
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>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>>    On Jun 2, 2014, at 5:38 PM, Guillermo Ruiz Camauer
>>    <grcamauer at gmail.com <mailto:grcamauer at gmail.com>> wrote:
>> 
>>>    If I set up a FS server as a standalone VoiceMail server, record
>>>    all voicemail prompts in G.729, and record all user voice
>>>    messages in G.729, can the server be set up in G.729 passthrough,
>>>    or must it have full G.729 licenses?  The point being that there
>>>    will never be any transcoding to other codecs.
>>> 
>>>    Thanks in advance,
>>> 
>>>    --
>>>    Guillermo
>>>    ____________
>> 
>> 
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>> 
>> -- 
>> Guillermo Ruiz Camauer
>> 
>> 
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