[asterisk-users] tdm410p w/ echo - no full duplex

Matthew Fredrickson creslin at digium.com
Fri Apr 11 15:19:29 CDT 2008


Michael J. Liberatore wrote:
> Matthew, I have just emailed support.  Do you know what the latest
> revision is?
> 
> Also, is it ok for mg2 to be in zconfig.h and echocancel=yes ?  It will

Yes.  Chan_zap and zaptel know how to automatically use the hardware 
echo canceller.  The configuration options like echocancel and 
echocancelwhenbridged apply the same to hardware and software echo 
cancellers.

Matthew Fredrickson
Digium, Inc.

> know automatically to use the hw ec rather than the software one?
> 
>  
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Matthew
> Fredrickson
> Sent: Friday, April 11, 2008 11:15 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] tdm410p w/ echo - no full duplex
> 
> Michael J. Liberatore wrote:
>> hi, i just installed 2 new tdm410p's on asterisk 1.4.19 with zaptel 
>> 1.4.10.  They have the hardware echo cancellers.  I am having an issue
> 
>> though, when i talk, it cuts out the other end.  So for example, i 
>> called up another asterisk box and was listening to the prompts and as
> 
>> they were playing if i said something, it would cut out the other end.
>>  
>> so i basically started counting and for the 20 seconds i counted, 
>> nothing came through from the otherside.
>>  
>> i tried from multiple phones and this didnt happen with the old
> tdm400.
>>  
>> is this an issue with the card?  Is it because zaptel has mg2 on?  
>> Does than mean i am using 2 echo cancellers?  the hardware one and the
> mg2?
>> how should this be set?  also, it says  "echo canceller could not be 
>> trained" or something like that at the start of every call on the cli.
> 
> It sounds like you need the new revision of the firmware.  Please
> contact technical support and they should be able to get it to you.
> 
> Matthew Fredrickson
> 
>>  
>>  
>>  
>> thanks
>>  
>> mike
>>  
>>
>>
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> 
> --
> Matthew Fredrickson
> Software/Firmware Engineer
> Digium, Inc.
> 
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-- 
Matthew Fredrickson
Software/Firmware Engineer
Digium, Inc.



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