[asterisk-users] E1 crossover system

[Leo Ann Boon]

Paul Hales wrote:
> I am setting up an E1 crossover system for a customer, with a Siemens
> Hipath Officecom 150 system.
>
> And it's not working - I get a red alarm from the outside world, and a
> yellow from the PABX.
>   
What's your zaptel.conf?

My suggestion:
a. Do one step at a time.
b. Asterisk - PBX: use a cross-cable. You probably need to enable CRC on 
the span. You need to take timing from the span connected to the telco.
c. Asterisk - PSTN: should be straight cable. You need to take timing 
from the PSTN. Red alarm means not connected.

Hope this helps.

Leo