11-06-2008 02:35 AM - edited 03-15-2019 02:23 PM
Hi All,
MOH is working inside the internal network but not over the remote/WAN. Given the following commands under Telephony-Services:
moh Flute-Ahirbhairavi.wav
multicast moh 239.1.1.1 port 2000
Commands configured for SCCP and DSP:
sccp local FastEthernet0/1.100
sccp ccm 192.168.4.1 identifier 1 priority 1
sccp
!
sccp ccm group 123
bind interface FastEthernet0/1.100
associate ccm 1 priority 1
associate profile 1 register mtp002255199861
keepalive retries 5
!
dspfarm profile 1 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729br8
codec g729r8
maximum sessions 4
associate application SCCP
let me know in case any other command is required to achieve MOH over the WAN.
Thanks and Regards,
Ashish
11-06-2008 03:53 AM
Probably not the answer you were looking for, but unfortunately there is no straight forward solution to your problem.
In order for multicast MOH packets to be routed across the WAN you will require multicast routing to be enabled in your network.
Allan.
11-06-2008 04:02 AM
Hi Allan,
Thanks for the reply, do you mean I should give "Ip multicast-routing" command on the CME?
Regards,
Ashish
11-06-2008 04:14 AM
High Ashish, again it is not as simple as configuring a single command. You will need to provision IP Multicast routing end-to-end, and should be carefully considered.
Below is a URL reference document regarding configuring IP multicast on a 3560 but the principles are the same. It discusses the various multicast alternatives:-
HTH
Allan.
11-06-2008 10:03 AM
You might look at this link for MOH multicast solutions. You're WAN needs to either support multicast, or you need to GRE tunnel the MOH.
11-06-2008 10:40 AM
I haven't tried this myself, but the best answer would be to replicate the MOH rather than route it. Copy the .wav file to , and issue the moh and multicast commands on, the remote router.
11-06-2008 06:49 PM
A common solution is to serve MOH from the local routers across the WAN.
2 reasons for this.
1. You conserve WAN bandwidth.
2. G.729 is a codec built for characteristics of human speech. Music is awful at G.729.
You basically configure a music on hold multicast source on CCM. Then under SRST mode on a local router configure a moh source to be served up from flash using the same multicast address and port as configured on CCM.
Since you don't have multicast traffic across the WAN as a default, Remote phones will be tricked into getting moh from the local router.
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