[Asterisk-Users] Tellabs Echo Canceller

[Michael D Schelin]

That sure sounds like it's Analog trunks to me. I believe you will need 
a channel bank to go from T1 to 24 ds0's and another to go back to T1. I 
could be wrong but I don't think so. I don't think that's what you were 
really looking for as far as an echo canceller.


ewr at erols.com wrote:

> I am getting ready to experiment with the Tellabs 2752 echo canceller.  
> I have a 255D shelf (and power supply), but am struggling a little on 
> connecting the echo canceller to a PRI.
>  
> The shelf has 4 25-pair amphenol connectors.  The two on the line side 
> are marked "Receive In" and "Send Out".   The 2 connectors on the drop 
> side are marked "Send In" and "Receive Out". I will be connecting the 
> echo canceller between a PRI and our asterisk box.  We recieve our PRI 
> on an RJ-45 jack, so I assume I will need to make a cable that connects 
> the "Receive Tip/Ring" pair from a Cat5 and wire it to pins 1 & 26 on 
> the "Receive In" connector and take the "Send Tip/Ring" pair and wire 
> them to pins 1&26 on the "Send Out".  The same thing will need to be 
> done for the 2 drop side amphenol connectors so that I can plug an RJ-45 
> connector in to our Asterisk box.
>  
> Does anyone have a suggestion on the easiest way to do this?  I will 
> make my own cables/connectors if necessary, but I suspect there are 
> already adapters out and I just don't know where to look.  I'd love 
> some suggestions on the best pieces to use if I do have to make it 
> myself too.
>  
> Thanks for any help or suggestions!
>  
> Eric
>  
>  
> 
> 
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