[Asterisk-Users] Echo on Zaptel FXO :(

[Ian Chilton]

Hi,

> If you stick with fxsks and add busydetect=no and callprogress=no  
> you'll find those random disconnects go away. They did for me.

I just tried that and I still got the disconnection so I changed it back
to fxsls but left those 2 lines in zapata.conf for good measure!


> Yes. The echo drove me and my parents mad. It was the same issues as  
> you are describing. Echo at near and far end and the caller on the  
> other end says you're quiet.

Ah, that's good news that you had the same problem and fixed it. I just
tried 2.0 and 2.0 and still got the echo though :(

Which NTL exchange are you on, out of interest. I'm in Teesside on the
stockton ubr.


> Through a number of mobile phone calls using T-Mobile free minutes to a  
> phone in another room (with my little brother as a testing guinea-pig).

So you just kept randomly chaning them until it sounded the best?


> I'm using two X100P clone cards (actually 101P's). Supposedly these  
> clone cards are exactly the same as a Digium X100P but I haven't ever  
> compared them.

So is that a modem with the MD3200 chipset? (which is what i'm using) or
is there other clones around?


> was significantly better if the cable used to connect the X100P to the  
> telephone point consists of a BTPlug to RJ11Socket adaptor and a cable  
> with two RJ11 connectors on each end. Make sure that only the two  
> central pins are used on the RJ11 connectors. On one of my cards at  
> least this drastically reduced echo.

humm, interesting. So your rj11->rj11 cable only has 2 pins, the center
ones?


> Out of interest, what are you using for your internal phones? Sipura  
> ATA?

Yes - an SPA-3000 with a BT Converse and some DECT cordless attached.
The SPA-3000 is good because if the power/network dies, the phones still
work because it bridges them to the pstn line.

How did you know/guess I was using a Sipura?


Thanks again!

--ian