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Multicast MoH from SRST router not working when WAN is UP

Hi folks,

I have

ip source-address 192.168.15.5 port 2000

which is essentially the Voice VLAN configured in the router

and

multicast moh 239.1.1.1 port 16384 route 192.168.15.5 10.1.1.1

10.1.1.1 is loopback address configured on mgcp gateway

multicast is enable

ip pim sparse-dense-mode is enabled for Gig0/0 with ip address of 192.168.15.5

CUCM-HQGW--------------------------BRGW------PHONE1

                                                  |

                                             phone2

call manager MRGL and MoH server and Audio file source is all multicast enabled.

2 REPLIES

Re: Multicast MoH from SRST router not working when WAN is UP

Did you "debug ccm-manager music on hold" to see if the request hits the SRST router when you try to put a caller on hold?

also, does in work when you put an external PSTN call on hold.

I noticed that you use the 239.1.1.1 base multicast address, what codec is being used between the holder and the holdee? This will influence the multicast address being used. Debugging moh will tell you which multicast address is being requested (join request) by the phone to the SRST gateway.

Try this first

R.,

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Hall of Fame Super Silver

Re: Multicast MoH from SRST router not working when WAN is UP

Make sure you also have global "ccm-manager music-on-hold" command applied.

I've seen issues where streaming from router would not work, and removing all related commands and reapplying fixes it.

HTH,

Chris

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