Question : Call Manager Problems with PRI Change

We have Call Manager version 4.1 and have switch PRI providers. Anyone calling the automated attendant (CTI route point) gets through 100% of the time but if you call a direct dial number the call may only come through 50% of the time. The PRI provided can see no issues and promises the port of the numbers is complete. When a call fails you get a busy signal or a message from the carrier state the number needs to be redialed.

What is different in the way the automated attendant handles the call versus the direct dial numbers. All of our desk phones are 7940 series Cisco IP Phones.

Answer : Call Manager Problems with PRI Change

Questions:

1) do you multiple PRI or just one?
2) does the problem happen consistently with certain DIDs or is it random?
3) is the gateway h.323 or MGCP?
4) is the gateway configured in the same CM location as the phone?

It almost sounds like the phones may be in a different location and your voice bandwidth is getting saturated.  Please answer these questions and I will try to help you out.  

Thanks.  

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