[asterisk-users] DAHDI fun and games

[Dave Fullerton]

Danny Nicholas wrote:
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Dave Fullerton
> Sent: Wednesday, May 20, 2009 4:03 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] DAHDI fun and games
> 
> Danny Nicholas wrote:
>> Hi Listers,
>>
>>                I'm running 1.4.25-rc1 on opensuse 11.0 with
>> dahdi-linux-2.1.0.3, dahdi-tools-2.1.0.2, libpri-1.4.7 and snapdsp.0.0.2.
>> Incoming calls work fine.  Outgoing calls made directly (exten =>
>> s,1,Dial(DAHDI/G1) then number work fine.  The problem I have is trying to
>> let Asterisk make the call (exten => s,1,Dial(DAHDI/G1/5551212,,r).  If I
>> use "m" (moh) the music plays 5-8 seconds after the other end picks up.
>> When using "r", I get 2-3 rings after other end picks up.  I've went
> through
>> every flavor of dahdi-linux from 2.0.0 to 2.1.0-rc4 (which crashed me)
> with
>> no joy.  Any suggestions?   Hardware is Dell Poweredge 1650/1550 and
>> TDM410P/TDM400P.
> 
> Any reason you're using the r/m option at all? Since this is an analog 
> card I would leave the r/m off and just let asterisk use the in-band 
> progress from the telco.
> 
> -Dave
> 
> Using "r/m" because DAHDI takes 10-15 seconds to get TELCO rings.

My experience with analog channels has been that DAHDI will bridge audio 
immediately after dialing the last digit. The exception to that may be 
if you're trying to use callprogress=yes in chan_dahdi.conf.

-Dave