Thanks for the link! I have it configured. I can call into the gateway from a PBX (it's a tie line), but I cannot make a IP call to the PBX from an IP phone. I have re-assigned the gateway in the dial-pattern. The gateway stays registered with the CCM. This gateway worked previously as an H.323 gateway, but it's been totally reconfigured for MGCP.
With the information you have provided I would purely get guessing as to what the problem is. I think you are saying you can call from the pbx through the gateway to an ip phone, but cannot call from an ip phone through the gateway to the pbx. What is happening. Are you getting reorder. Is it a partition and calling search space issue. Are you stripping some digits that you don't need to be or are you adding extra digits that used to get stripped in h.323 mode. If the call works one way it sounds like the gateway is okay.
OK, I wiped out the entire configuration and started over. Now, everything works great, except for calling the IVR from the PBX side. I am monitoring the following in the CCM server's performance monitor:
T1 Channels Active
When I begin dialing, the T1 channel goes active, which tells me that the gateway is passing the call to the CCM. I get a busy tone about 1 sec. after the last dialed digit. When I terminate the call, Calls Attempted increments by two, T1 Channels Active drops to 0, and Calls Completed retains its previous value.
I noticed that when I call the IVR from an IP Phone, the Calls Attempted counter increments by one, and the call goes through. Then it increments by one again when the call terminates, and Calls Completed increments by one.
This is a very simple and basic configuration of CCM with only a default device pool, and no partitions, calling search spaces, or media groups.
Again, this is a "conversion" to MGCP from H.323. Everything was working under H.323, but I would rather use MGCP.
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