Can I see if anyone has any clue why there is no voice path when i cross router for external calls.
We are using MGCP controller routers on CM4.2(3).
This is our setup now, we have a Nortel PABX which has 2 QSIG connections, each to Router 1 and Router 2. We also have 4 ISDN30 to a Telco provider, two connecting to each router.
PABX QSIG1 -- Router 1 -- TelcoA1
PABX QSIG2 -- Router 2 -- TelcoA3
From PABX phone, if we dial an outgoing call to the Telco and if it routes to Router 1 and to TelcoA1 or TelcoA2, the call would go through, voice path is correct.
If it routes to Router 1 and CallManager routes it out to TelcoA3 or TelcoA4, the call would be establish however, there is no voice path and users cannot hear anything
This is also the same issue vice versa if we route to router 2 and to TelcoA1, TelcoA2.
The two routers is in the same network segment, no firewall between.
Thanks in advance,