[Asterisk-Users] TE411P Really Bad Echo

[Steve Underwood]

I don't know about the Tellabs cancellers in particular, but I think any 
echo canceller built in the 80s will be a fairly poor performer. Many 
improvements in EC occurred in the early 90s, in response to the 
problems of earlier cancellers. Also, most older cancellers only cancel 
fairly short echo tails, as the compute needed for longer cancellation 
was expensive.

On the other hand, they may be adequate for your needs, and are cheap.

Steve


C F wrote:

>Could be, but I don't see why one would spend more just becuase the
>answer is yes. The tellabs will do the job perfectly (at least in my
>experience) and can be picked up for less than $100.00 on eBay. They
>have proven to last for 20 years (the older models being sold on eBay
>were manufactured in the 80s). I see no reason to spend the money.
>
>On 2/11/06, asterisk at anime.net <asterisk at anime.net> wrote:
>  
>
>>On Sat, 11 Feb 2006, Rob Lith wrote:
>>    
>>
>>>TE406P/411P and if you need to go dedicated to hanlde all possible look at
>>>an external dedicated canceller like www.oriontelecom.com VCL-E1 ECHO
>>>CANCELLER (1U Version) ± $1295
>>>      
>>>
>>Is the orion echo canceller a higher quality EC than tellabs?
>>
>>-Dan
>>    
>>