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CALLMANAGER 4.1 + GSM GATEWAY

Is there soem requirments for configuration CallManager with GSM Gateway? I use GSM gateway as H.323 gateway. And it works. But some times, GSM gateway doesn't want to call with all 4 slots. Only works 3 or 2. What can be the problem? Is there any specific configuraiton for this devices?

I use 2N GSM gateway. Does anybody use GSM gateway + CallManager

1 REPLY
Cisco Employee

Re: CALLMANAGER 4.1 + GSM GATEWAY

The CCM has no awareness of the H323 device's capabilities, so it will keep sending calls to it until it gets some kind of indication that it can no longer process the calls.

If the calls are intermittantly failing like this, you can either go through the CCM traces to see what clearing reason the gateway is sending back, or the other option is to run wireshark to capture the calls between the CCM -- GSM device, then use the VOIP calls analayse feature to detail the call flow.

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