[Asterisk-bsd] echo

[Aristedes Maniatis]

On 11/10/2006, at 11:12 AM, Jeremy Bogan wrote:

> ISDN should make a sufficient difference in regards to echo. What  
> echo canceller are you currently using for Zaptel?

I didn't even know there were choices. It looks like the default from  
zconfig.h would be used which appears to be ECHO_CAN_MARK3. I guess  
it would be nice if these were config options in the Zaptel port. Who  
are Mark and Steve and what do they know about echo cancellation?

Mostly it is OK, often the first 2 seconds of a call are awful and  
then it settles down. But sometimes the echo comes back from time to  
time during a call.

The other problem we've had is one of the TDM FXO ports getting  
wedged somehow and not answering any calls until a restart of the  
zaptel driver and/or whole machine. That happened about 2 or 3 times  
now over 6 months.

We are thinking of rolling this out to customers, who would not be  
happy with this level of reliability.


Ari Maniatis



-------------------------->
ish
http://www.ish.com.au
Level 1, 30 Wilson Street Newtown 2042 Australia
phone +61 2 9550 5001   fax +61 2 9550 4001
GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A


-------------- next part --------------
A non-text attachment was scrubbed...
Name: PGP.sig
Type: application/pgp-signature
Size: 186 bytes
Desc: This is a digitally signed message part
Url : http://lists.digium.com/pipermail/asterisk-bsd/attachments/20061012/a81fe8b2/PGP.pgp