IP Telephony and Phones

Recently upgraded from CUCM 11.5.1 to 12.5.1.  Since then I have a report of at least three 8865 phones displaying the registration screen every 2-3 minutes.  So the phone loses its registration with the server and comes back up right away.  I was lo...

Hi CommunityI need to know how to give configuration to my 8961 KEM Expansion Module . I have already added these lines of codes to my SEPMAC.cnf.xml which I found from cucm tftp server with this formathttp://<CUCM-ip-address>:6970/SEP<phone-mac-addr...

                   HI allIm mid way through migrating a site with 100 x 7911 telephones to a new callmanager and at least half the 7911's failed to register due to my firmware being too high a level to directly upgrade. I need to do an stepped upgrad...

I am trying to create a custom LDAP filter which filters on the Distinguished Name attribute of user accounts.  The AD structure, unfortunately is causing this.  I have a top-level OU called 'Users and Groups'  Under this OU are several sub-OUs.  "ac...

The IP phone register in SRST due to WAN link failure, but when phone rebooted due to power outage in SRST mode.Its not re-regidstering on SRST gateway & showing registering..

                   Hello,  Need a helpi am getting below error SIP Trunk Reason: Q.850;cause=102;text="recovery of timer expiry"  I configured the SIP trunk and the below is the Call Flow IP Phone ----->>>>.CUCM------(SIP Trunk)----CUBE(2921)--------...

Hello friends,I bought some new stock phone, model 7942G & 7962G,I have a amazing problem when I want to register my phones!I will say a brief of my network structure and my problem here , maybe someone can help me I can go out from this hell  I have...

Hello everyoneWe have Cisco MCS 7800 with CUCM 7 installedCan we transfer the license to a new Cucm installed on the ESXI server?

Hey Guys Im currently trying to find a quick way, how i can rename a couple UDPs of a list i got of a client.Is there any way i can speed things up? I cant find a way to do it with bulk, so im doing manual work right now.But manual is a bit to slow t...

Hi, We need to upgrade our customer CUCM from 10.5 to 12.5. Can we upgrade from 10.5 to 12.5 directly.And will al licenses be migrated from 10.5 to 12.5 after upgrade or we need to purchase licenses. Thanks.