Any ideas on why the CPU spikes to 100%. Solving that root issue would likely solve the delayed dial tone problem. Using Task Manager or setting appropriate perfmon counters may help isolate the cause of the problem.
Other than that, I'd suggest:
- looking for unsupported applications running on the server.
- making sure the server has the latest windows OS patches
- seriously considering upgrading to a version of CUCM that has development support.
Thanks for your reply Michael, in the task manager i can see that the CTIService is causing the 100% use of the CPU. I have almost 20 CTI ports and 5 CTI Route Point configured in my CCM associated with my IPCC Express.
Is it possible the the CTI configured are causing this problem. Is there a way to verify that?
20 CTI ports and 5 CTI RP's doesn't seem a like too much. How many servers are in the cluster? Are device registrations distributed among CallManagers? Detailed SDI and SDL traces for bot CCM and CTI would help confirm cause. The TAC can help analyze if need be. If it hasn't been done in a while, a server or cluster restart may provide relief for a time. A restart of the CTI Manager service may do the same.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...