[Asterisk-Users] RE: Problems w. chan_capi + ztdummy - SNOM Problem?

[nicolas]

I have this problem too.
If i call out (not only with capi) the codec of my choice is used (ALAW for
internal phone another for outgoing).
For an incomming call alaw is used, even if i disable alaw in globals.

So my bandwith is highly consumed and i can not do anything.

nico

Lars Boegild Thomsen wrote:

> Actually I've played around with the last issue quite a lot and this is
> indeed getting weirder.
> 
> Let me try to describe the problem.
> 
> sip.conf is configured with:
> 
> disallow = all
> allow = gsm
> allow = ulaw
> allow = alaw
> 
> Snom phone is configured to use GSM as default codec but with "Offer
> Answer/Full" option set.
> 
> If I place a call FROM the Snom phone to an external number (going out of
> the CAPI/Fritz/ISDN interface) everything works beautifully - and "sip
> show channels" show that the Snom phone is using GSM.
> 
> If a call come IN on the Capi interface and is routed to the phone there
> is the described pulsating sound heard on the Snom phone alone and "sip
> show
> channels" report that ALAW is being used as codec.  How come the choice of
> codec is different?  AFAIK when gsm is first in sip.conf this should be
> the preferred codec.
> 
> I haven't tried to roll back to an earlier Snom image (using 2.05d) but
> this
> problem is definitely a new one.  Using an Asterisk CVS-HEAD as of today.
> 
> So - I am not sure exactly where this bug is.  As far as I can see there
> might be two problems - one that the codec of my choice is not the one
> being
> used.  Second the pulsating noice when using ALAW (which should work fine
> too).
> 
> Any ideas?
> 
> Regards,
> 
> Lars....
> 
>> -----Original Message-----
>> From: asterisk-users-admin at lists.digium.com
>> [mailto:asterisk-users-admin at lists.digium.com]On Behalf Of Lars Boegild
>> Thomsen
>> Sent: 18 May 2004 12:00
>> To: Asterisk-Users at Lists. Digium. Com
>> Subject: [Asterisk-Users] Problems w. chan_capi + ztdummy
>>
>>
>> Hi Everybody
>>
>> I've got a weird problem.  I am running one Asterisk system on a dual
>> processor box.  This box mostly do VoIP only but it has a Fritz PCI ISDN
>> card installed with latest drivers.  Dialing out through the ISDN
>> cards from
>> an internal Snom phone works fine and so does dialing in.  Except - if I
>> load the ztdummy module (for IAX channels) the capi drivers starts acting
>> up.  It is hard to describe the sound but it breaks up so badly that it
>> is impossible to understand the voice prompts and they also start playing
>> extremely slow (demo congrats alone takes more than 30 seconds
>> before going
>> to the next prompt in the standard demo setup).
>>
>> I am nearly updating this particular box every day and within the last
>> couple of days something else has happened.  When dialing OUT on the ISDN
>> card everything works fine.  When someone dial IN through the card and
>> connect to the internal Snom phone there is a pulsating background noice
>> that can only be heard on the VoIP phone.  From outside (the ISDN) things
>> sound perfect - from inside you can still hear what is being said - but
>> there is that pulsating quite high noice.
>>
>> Any ideas?
>>
>> Regards,
>>
>>     Lars...
>>
>> --
>> Lars Boegild Thomsen
>> Technical Director
>> JustIT Sdn. Bhd.
>> Cell Phone (MY): +60 (16) 323 1999
>> ICQ: 6478559
>> Yahoo Chat: lars_boegild_thomsen at yahoo.com
>> MSN Chat: lars_boegild_thomsen at hotmail.com
>> http://www.justit.ws
>> Phone: +1 (360) 515 3551 (US) +45 8692 1951 (DK) +60 (3) 2057 2646 (MY)
>> Fax  : +60 (3) 2057 2647 (MY)
>>
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> 
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