[Asterisk-Users] audio delay ISDN

[Florian Overkamp]

Hi, 

> -----Original Message-----
> 2 ISDN cards (0000:00:0a.0 Network controller: Cologne Chip 
> Designs GmbH ISDN network controller [HFC-PCI] (rev 02) )
> The Hisax module is loading ok.
> 
> Now everything works ok. we managed to get a ok dialplan 
> working for internal phones and all 8 phone numbers we have 
> on the ISDN lines.
> We have one annoying problem tho.
> There is an audio delay on outgoing/incoming calls.
> The delay is 2 to 3 seconds.
> 
> Internal calls from sip to sip is no problem at all.
> 
> Any idea what is wrong with our setup ?
> If you need more info and/or config files please ask.

Which channel driver are you using ? Modem/ttyI1  etc. ?

The isdn4linux implementation causes this issue. If you can, please switch
to zaphfc from the bristuff package (see www.junghanns.net/asterisk)

Get the latest version at
http://www.junghanns.net/asterisk/downloads/bristuff-0.2.0-RC3.tar.gz

Florian