I have to change a subnet mask on CUCM and CUC servers. They are version 9.1 on VM. My question is, will I have to apply to have the license re-hosted after the mask change? Many thanks in anticipation.

I have the following problem when changing from the default English (US) to English (UK) system default language in CUC ver 10.5.1-10000-7: The custom greeting changes from: 'We are now closed, please wait to leave a message',  to: 'sorry SCH XYZ is ...

Hi,I have a customer who is upgrading CUCM ver 8.6 to BE6K ver 10.5. They have asked for Webex to share desktop and for voice conferencing for up to 10 participants.My question is: could they use the cloud based BE6K Webex application? Is this app pa...

I have a customer who is experiencing calls drops to their SIP circuit. They have CME running on a UC520.I ran debug ccsip messages and could see an expiry time of 180s however the CME is configured with:sip  registrar server expires max 3600 min 360...