IP Telephony and Phones

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.  

hi freinds, how can i disable TelePresence Room feature in Expressway E and C ?? because from wan, i always see attack and try on these feature and i dont use it on my scenario, 

I have an overhead paging system connected to a VG310 using SCCP.  For the most part it works fine however there is one issue we have found.  If I call the paging number and hang up the phone while it is still ringing (before the paging system picks ...

Hello, We currently have cucm 12.5 and already have several sites configured with route pattterns, css, voice gateways, etc.  I was wondering is there like a report or like a site map in cucm of all of the current a configurations for a site that we ...

Hi. I´m about to deploy one CP8841 IP phone. The problem es that at the client dont have a POE switch, so I came with the idea of install a POE injector only for this phone. The injector is IEEE 802.3af compliant and capable of deliver 12.4W.This pho...

  Hi   So we have just learning CUCM 12.5 configuration. but not sure about Can we mapping text label (Name of my staff) into phone 7821 when they call incoming? (I don't sure call manager have global phone book?) Regards, Tom