IP Telephony and Phones

Some Cisco phone disappear the call(Directories: missed, outgoing and answered calls) How can I resolved this problem ASAP

Hi guys. There is user complaining about spontaneous calls made from her phone automatically, she didn't do that herself. Phone is 8845 with sip8845_65.11-7-1-17 version . CUCM is 11.5 version.  So far calls are internal . Calls happening not regular...

Hello, i have enabled encryption with MIC on customer's cucm 11.5 cluster (1 publisher+ 3 subscriber) and it seems there is some limitation when registered phones exceeds 1k.  about 990 phones work correctly in encrypted mode but the remaining 100 ph...

  We are having an issue with forwarding any desk phone to an external number, ie a mobile. If we dial the internal extension from another desk, the call works great, but if we dial the DDI of the extension from an outside number, the call is diverte...

Dear all,   Can I deploy IVR services on CME 10.5 (2911 IOS: 15.5)? does a license exist ?   Thanks,   Mahfoud,

Our customer replaced his old Cisco 7962 phones with 8851 phones. Now he noticed that he is not able to put two participants together to a conference after he initiated a transfer. On the old phoens it was possible to switch both calls and his own ph...

I am running out of room for a large CUCM site (16k end devices) and could not find anything about expanding the CDR DB.Is there a way to do it or is this a fixed size that cant be changed?... 

Setup a Call Handler in Unity with an Auto Attendant (enter 4-digit extension or hold for next available representative) and then release to switch using extension 8810 (**8810).  Need to change the skill name to queue the call to (from Grandview_Ins...

Im in a discussion with an IT team and their existing cluster. They use +E164 but they globalise the number directly in the route patterns with prefix , transform mask. They have a mixture of Route Patterns of \+! and normal 9.01!, 9.00!, 9.02!  type...

Hello, we have a problem with changing background on ip phone 7965. We have created TFTP server, where we have list.xml file. Router and switch are configured as they should be. Phone cannot enable personalization setting. I guess, this is the whole ...

Hi all, hoping for some guidance on how to remedy this issue. I never had problems with windows 7 but since getting my laptop re-imaged to windows 10 I've been having issues regularly.   When I am using the desktop windows IP communicator, I've notic...

I bought a Cisco Desktop Charger Dock/Cradle for the Cisco 8821 mobile phone online.  It's Part #CP-DSKCH-8821=    The dock did not come with a power adapter to power the dock/charge the phone.  Should it have?     If not, where can I find one for it...