asterisk users - Dec 2010 - Error messages with chan_dahdi

HI, I'm using asterisk-1.4.24, dahdi-linux-complete-2.4.0+2.4.0 and
libpri-1.4.11.4
When dial, when 492131 answer, in console appear some error messages



  -- AGI Script Executing Application: (DIAL) Options: (DAHDI/g1/492131|60)
    -- Requested transfer capability: 0x00 - SPEECH
    -- Called g1/492131
[Dec  4 11:15:59] WARNING[7669]: chan_dahdi.c:1776 dahdi_enable_ec: Unable
to enable echo cancellation on channel 2 (No such device)
    -- DAHDI/2-1 is ringing
[Dec  4 11:16:02] WARNING[7669]: chan_dahdi.c:1776 dahdi_enable_ec: Unable
to enable echo cancellation on channel 2 (No such device)
    -- DAHDI/2-1 answered DAHDI/1-1
    -- Native bridging DAHDI/1-1 and DAHDI/2-1
[Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error: ROSE
REJECT:
[Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error:
INVOKE ID: 3
[Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error:
PROBLEM: Invoke: Unrecognized Operation


Any ideas?
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On 12/4/10 9:15 AM, equis software wrote:
> HI, I'm using asterisk-1.4.24, dahdi-linux-complete-2.4.0+2.4.0 and
> libpri-1.4.11.4
> When dial, when 492131 answer, in console appear some error messages
>
>
>
>    -- AGI Script Executing Application: (DIAL) Options:
(DAHDI/g1/492131|60)
>      -- Requested transfer capability: 0x00 - SPEECH
>      -- Called g1/492131
> [Dec  4 11:15:59] WARNING[7669]: chan_dahdi.c:1776 dahdi_enable_ec:
> Unable to enable echo cancellation on channel 2 (No such device)
>      -- DAHDI/2-1 is ringing
> [Dec  4 11:16:02] WARNING[7669]: chan_dahdi.c:1776 dahdi_enable_ec:
> Unable to enable echo cancellation on channel 2 (No such device)
These "No such device" errors when trying to enable the echocan are
most
likely the result of not having configured an echocan for the channel in 
/etc/dahdi/system.conf.

See line 309 in 
http://svn.asterisk.org/view/dahdi/tools/trunk/system.conf.sample?view=markup
>      -- DAHDI/2-1 answered DAHDI/1-1
>      -- Native bridging DAHDI/1-1 and DAHDI/2-1
> [Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error: ROSE
> REJECT:
> [Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error:
> INVOKE ID: 3
> [Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error:
> PROBLEM: Invoke: Unrecognized Operation
>
>
These errors I don't know about off the top of my head (and they are 
probably the more critical ones for you I'm guessing).

-- 
Shaun Ruffell
Digium, Inc. | Linux Kernel Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at: www.digium.com & www.asterisk.org