My customer is using UCM 7.1.2 and 2 3845 vgws (1 has local PRI and 2nd gw has LD PRI). Telco won't pass toll-free calls thru LD PRI and customer is using standard route group which is utilizing the 2nd gateway (LD) first then the 1st gw (Local).

I configured a dial-peer on 2nd gw to pass 91800....... to the 1st gw and it is setting up the call however, from IP Phone don't hear any ring back from PSTN and call gets terminated after a few second.

here is a a copy of config

1st gw.

dial-peer voice 100 voip

description inbound voip call leg from CUCM

voice-class codec 99

incoming called-number .

dtmf-relay h245-alphanumeric

no vad

dial-peer voice 201 pots

description outbound ld pots call leg to PSTN

preference 1

destination-pattern 9...........

port 0/0/0:23

forward-digits 11

2nd gw

dial-peer voice 103 voip

destination-pattern 91800.......

progress_ind setup enable 3

session target ipv4:172.XXX.XXX.251 --> 1st gw interface

incoming called-number 91800.......

codec g711ulaw

no vad