No, you can use the following.controller E1 3/0
channel-group 0 unframed
http://www.cisco.com/en/US/docs/ios/12_1t/12_1t1/feature/guide/dtg703.html#wp1029390Feature NameReleasesFeature Information1-Port and 2-Port VWIC3s - Voice WAN Interface Cards15...
Is you MoH multicast?Do you have anything doing multicast confrencing, presentations, iptv?Are they using the same address space. This could explain why it would be intermittent, and why they would hear the presentation or conference.
What codec are you using between Site A and Site B.If you are configured for G729. Then you better have a transcoder. If not then you will not be able to confrence using the callmanger as the confrence resources. If you do have a transcoders make s...
I would agree with adding more ram. if you are constantly paging then you will ahve slower response.There is a bug for unity ports requiring more rings wit unity 4.0 It involved the unity tsp. I do not rember the bug number off the top iof my head...
Try setting the "stop routing on user busy flag" to false. This is supposed to only be for intercluster trunks. but i have see it effect other h323 and h225 interactions with callmanger. Changing this also resolved a simular issues I had with call...