CUCM, problem with Music on Hold

[t3cn1c]

Music on Hold is active for internal calls, but is not working for call to PSTN, example when i call from extension 7202 to a cellphone, the cellphone never hears the music on Hold.

I make all the procedure, create the MRG's, MOH Source is fine, MOH Server Configuration is fine, MRGL List Configuration is fine.

There´s something to configure in the Gateway (3845). .??

I will apreciate any Help. . .

 

[fieryhail]

What kind of gateway are you using? h.323 or MGCP? Are you using a SIP trunk, if so, what is your MTP status? More information please, also which version of CUCM are you running?

 

[drother]

The gateways need a loopback interface to put MoH on the PSTN circuits.