You can configure anonymous call rejection on cucm to block calls from anonymous callers at the SIP trunk using the SIP Profile page configuration settings. Select the “Reject anonymous incoming calls” checkboxes on the SIP Profile page. When the Rej...

Is your packetization greater than 80 bytes on the router. If yes try setting codec packetization to 80 bytes on dial-peer or voice-class  codec.

HI Mohammed,Can you please let know what kinf od sound are you hearing. Is it a crackling sound or a hissing sound. What type of IP phones are used at both locations and the firmware used.Regards,Abhijit

Bulk edit of speed dial can be accomplished by exporting all the phone details and then re-inserting them to the CUCM. 1) Go to Bulk Administration -> Phones -> Phone Template. Click on Add new. Create a template just to manage the phones. Use the d...

Hi,It seems the phone is not responding to the Call control system. I am pretty sure that this is happening with only one phone. You may need to RMA this particular phone.You may want to send me ccm trace for this phone. Once you unplug and plug back...