All

Need some advice, I'm looking at an SRST site where PSTN callers are getting on hold tone and not the configured multicast MoH source. The only decernable difference between this site and all other sites is this uses BRI ports in trunk group. I haven't found anything explicit to say this is or isn't supported, but would appreciate some assistance.

Relevent Config:

interface loopback 0
ip address 172.31.1.1 255.255.255.255
!
interface GigabitEthernet0/0.301
description Manchester Voice
encapsulation dot1Q 301
ip address 172.30.150.250 255.255.255.0
h323-gateway voip interface
h323-gateway voip bind srcaddr 172.30.150.250
!
call-manager-fallback
moh-file-buffer 10000
moh Things_Are_Looking_Up.au
multicast moh 239.1.1.1 port 16384 route 172.31.1.1 172.30.150.250

sho ephone summ

Skinny Music On Hold Status - group 0
Active MOH clients 0 (max 210), Media Clients 0, B-ACD Clients 0
File Things_Are_Looking_Up.au (cached) type AU Media_Payload_G711Ulaw64k 160 bytes
Moh multicast 239.1.1.1 port 16384 route 172.31.1.1 172.30.150.250
File play position 24 file type 3 current type 3
Play offset 266904, Write offset 0,File start 24 end 1759553
File buffer at 2AC74534, buffer size 1760000
RTP ssrc 6F1D2116 timestamp_offset 0 position 40DA reposition 0
Max process service interval 47619 (last 46624)
Min interval 22140, missed 0 run 0 (us)
moh_process_service counter 11944569
Max Media process interval 167333525 (last 565838) run 0 (us)
File system max access time 4588 (us) (last 4384) with late-reads 0
0 clients interrupt service, 0 process level
0 no-conversion, 0 a-to-mu, 0 mu-to-a
0 packets serviced at interrupt, 0 at process
Media Client Tx: 0    Xcode Tx: 0