[cisco-voip] Connecting FXO to FXS to simulate local loop problem.

[jeremy co]

Hi,

I've got two routers that equipped with FXO and FXS ports connecting
together.

R1 (CME) FXO------------------------(FXS ) R2

 Router with the FXO port is also the CME router.


I try to make a call from ipphones connecting to R1 to R2.


Pot Dial peer on R1 configured to direct call to FXO port, but I cannot see
anything on debug voice dialpeer on R2 when making call from R1. I can see
R1 FXO port goes off hook, but then disconnect after 2 sec.


I guess that sth missed here, might be some loop start or ground signalling
have to be configured on FXO port?


Any one did this before?




Jeremy
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