I have PBX system and a router with 16 FXS port. the PBX connects to router via E1 CAS and fxo-loop-start signal.
The PBX guy told me that he has defined 16 extension on E1 link.
So I want to hear PBX dail tone on my FXS phones.
the sesond issue is how pbx extensions call fxs extensions?
I have defined Connection PLAR on each ds0 group. but I have not PBX dial tone.