[asterisk-users] E1 PRI to and from SIP screeching

Peter Lindquist peter.lindquist.th at gmail.com
Wed Nov 12 21:07:15 CST 2008


Thanks, contacted Rhino and they say it is a card firmware/driver 
version issue which is causing the EC to mishandle alaw/ulaw. Waiting 
for them to provide me with new firmware/drivers.

No problems can be seen with interrupts, debugging the span, etc. All 
looks normal, but all one hears is noise.

Will give the list an update as soon as upgrades are provided and installed.



Steve Totaro wrote:
> On Wed, Nov 12, 2008 at 12:25 PM, Peter Lindquist <peter.lindquist.th 
> <http://peter.lindquist.th>@gmail.com <http://gmail.com>> wrote:
>     Hi all,
>     We have just set up trixbox latest with a Rhino r1t1 card, hooked
>     up to
>     a plain E1 PRI line. We call fine SIP to SIP, but as soon as we make a
>     call from SIP to PSTN all sounds become unintelligible screeching or
>     static kind of noise on both ends, when we call PSTN to SIP the PSTN
>     side seemingly OK at least we hear no screeching sound, but the
>     SIP side
>     is a even worse screeching sound. To be certain all is as plain as
>     possible we disabled all echo canceling, and we use only alaw.
>     Any ideas on what this can be and how we start troubleshooting this?
>     Best regards,
>     Peter
> I would contact Rhino first and see if they can help, give them SSH.
> But you can do a "pri intense debug span 1" and see if there is 
> anything unusual.  You could check /var/log/messages as well as the 
> Asterisk log.  Try "cat /proc/interrupts", not sure about rhino gear 
> and interrupts.  Try the card in a different slot.  Make sure your 
> cable is correct.  Make sure your configs are correct.....
> -- 
> Thanks,
> Steve Totaro
> +18887771888 (Toll Free)
> +12409381212 (Cell)
> +12024369784 (Skype)
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