Hello!
Our customer has some kind of legacy conferencing equipment with E&M ports and we need to connect it with PBX's as shown on the attached picture.
PBX1 connects to Conf1 and PBX2 connects to Conf2. The difference is that PBX1 and Conf1 are both connected to the same router R1 while PBX2 and Conf2 are connected to two different routers separated by IP cloud. In the first case I solved this problem applying below configuration to R1:
controller E1 0/0/0
framing NO-CRC4
ds0-group 18 timeslots 18 type e&m-immediate-start
!
voice-port 0/1/0
operation 4-wire
type 5
signal immediate
compand-type a-law
no comfort-noise
cptone RU
bearer-cap Speech
!
connect CONF voice-port 0/1/0 E1 0/0/0 18
As a result R1 functions as a multiplexer for PBX1 and Conf1 effectively connecting TS 18 on E1 port to E&M port.
The question is: can I somehow achieve the same result with R3 and R2?
