IP Telephony and Phones

  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

Hi All, New Cisco IP SIP Phone 7841 and 7821 not showing call history ie while started dialing not pop up recently dialed numbers.it is working properly in other models 7945 and 7911. Thanks 

We have a user with a 7975 IP phone.  She has one DN configured at the first button and one DN at the last button.  There are six buttons in the middle with nothing.  She is able to get up to four calls at the same time on the top DN but not more.  W...

Hi All,We are facing audio packet loss issue while making or receiving Jabber PSTN calls Via VPN .We are unable to properly hear the person on the other end .This is happening only for PSTN calls  .At the moment we don't have  option to check calls f...

Customer is using 802.1x authentication for ip phones on current CUCM Cluster (version 9.x). We will migrate the phones to a new CUCM cluster (version 12.x)What is the best approach to deal with 802.1x authentication

88XX phones take more than 20 minutes to reboot. See below. this phone is not using VPN and user locale is set to none.Look at the time between each step.

Our 8851 phones frequently stop responding to web requests until reset.  It seems to be only this model (7841s do not have the same issue) and it's not a specific firmware.  Has anyone else seen this?  It did not appear prior to us moving to 11.5(1)S...

I am running CUCM version 6.0.1.2121-1. The Cisco CDR Repository Manager won't stay running after about 20 seconds. I click on the services and hit start and it will run about 20 seconds. Then after 20 seconds the time will restart and run again for ...

HiI have external call transfer restrictons in place on our Call Manager 10.5 system. I wish to remove the restrictions so that I can call a DDI from an extenal number, which then diverts to a mobile. I have set the feature service offnet-to-offnet t...

Hi, We have around 70 cisco 7945 ip phones, and we need to change the background image. Is there a way to push it from the call Manager for all phones automatically and apply the image without selecting it in each phone. I have followed the below ste...

Hi All     Regarding Work From Home situation, we want to implement Mobile Voice Access (MVA) Solution on CCM that allowed user's mobile call in to office and out of system to customer external number, I've checked the document but not realize that c...

I have a Cisco 7821 3PCC registered via SIP with an ITSP that is unable to make external calls but has no problems receiving inbound calls.I factory reset it and put in all the SIP settings I needed to put in to register it. Opened up my home router ...

I've had quite a journey troubleshooting a bandwidth issue reported by a number of branch offices - the upload being significantly slower that what the circuit guaranteed. What was thought to be either an ISP issue or a possible issue with copy past ...