[Asterisk-Users] Asterisk and Sirrix PCI4S0 echo cancellation

[altus]

On the subject of this
in you /var/log/messages do you get errors like this

Jun 21 09:38:45 pbxct sshd(pam_unix)[1993]: session opened for user root by (uid=0)
Jun 21 09:39:22 pbxct kernel: 00: Unsetting old PCM master PFIC 0
Jun 21 09:39:22 pbxct kernel: 00: Setting PCM master to PFIC 0 IPAC3
Jun 21 09:39:22 pbxct kernel: Slip detected on IPAC3
Jun 21 09:40:02 pbxct kernel: sirrix ipac (3): ipac_handle_interrupt_icd: error, RSTAD = 0x1e not ok!
Jun 21 09:40:07 pbxct kernel: Slip detected on IPAC3

email this guy,he wrote a patch to bring down the volume
<steve at connection-telecom.com>

On Tue, 2005-06-21 at 09:37 +0200, David Wilson wrote:
> Hi guys,
>  
> I'm running a Sirrix PCI4S0 quad BRI card in a box with Asterisk CVS-
> HEAD (20050614).
> Something I've come across is that with 'echocancel = yes'
> in /etc/asterisk/sirrix.conf the echo is unbearably loud - so loud in
> fact that the echo distorts.
>  
> To remedy this I've set 'echocancel = no' and disabled the echo
> cancellation. With the echo cancellation disabled there is still an
> echo but it is much softer.
>  
> Any ideas on how I can turn on the echo cancellation again without
> having the very loud echo back ?
> Is there some way I could perhaps drop the TX volume out of the Sirrix
> card ? Perhaps this would help ?
>  
> Thanks in advance.
>  
> 
> Kindest regards
> David Wilson
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