IP Telephony and Phones

Hello all,This is an issue that had me stumped for quiet a while but thankfully i had the help of a CCIE with tons of experience. So i will briefly describe my issue, how we narrowed it down, and so forth.Prior changes made: switch upgrade for one of...

We have configured SIP Trunk between CUCM and Yealink PBX.When calling from Yealink to CUCM, the video does not work at allWhen calling from CUCM to Yealink, there is a picture on the Yealink phone, but there is no video on the Cisco phone - a black ...

Hi all We are looking at upgrading our cucm from 8.6 to 11.6 I believe the licencing has changed from device to user based licencing. We currently use mobility for users to log into each phone so each phone as no owner.   We have been told as part of...

Hi there, I'm trying to change the background image using post method to this url  http://myPhoneIP/CGI/Execute with XML: <?xml version="1.0" encoding="UTF-8"?><setBackground><background><image>http://myimage.png</image><icon>http://myicon.png</icon>...

Have a customer that has a bunch of VG224's in their current CUCM 10.5 environment. Looking to upgrade them in the short term to 14.0 and I am hoping that becides the fact that they are EOL that they will still work.  so that in the next budget we ca...

Have a customer that need to upgrade to 14.0 but has a bunch of the CP-69xx phones in the network. The release notes say: "The following table lists Cisco endpoints that have reached the End of Support date, but which are not yet deprecated. Unlike d...

I got a couple 9951 series phones brand new in boxes at a garage sale will they work at my place of business

I have installed a VG224 in a naked lab 19" rackWhen temperature goes high three fans are very noisyIs there any workaround ? i.e. raplacing fan with different brand/model , or reducing speed/treshold via configuration , or fool pwm rpm managing , or...

We have 3 node CUCM cluster with a PUB and SUB at HQ and a SUB at the DR site. We also have CUBE setup with SIP to the PSTN on a router at HQ and a router at DR. When  I shut down the PUB, calls are not being processed by any of the two SUBs (The SUB...

we are configuring ip phone 8851 in cucm 11.5. we bought expansion module CP-8800-A-KEM. but we couldn't find an option "CP-8800-Audio"  and all lights in  the expansion module are off. our