We have home office users that connect to their Cisco phones to our CUCM via our VPN gateway.  What could cause intermittent "dead air" on calls from one of these phones?  Not sure where to start troubleshooting.   They say that usually hanging up an...

Cisco Newbie Here!   Need to replace our company logo file that is displayed on some 7965 & 7970 Cisco IP phones.  How do I upload a new file and set it as the display graphic? 

Unity Newbie!  Where do I configure a voice mailbox to deliver messages to user's email mailbox?

I am a Unity Newbie.  Our company just merged with another and temporararily have two domains.  Need to see if we can authenticate Unity users on both domains.  Thanks!

Newbie here! Camera is not sending video nor can video of other locations be seen on the monitor of one of our Tandberg units..audio is working.  Screen is just showing a icon of a phone with the word STREAMING on it.  This is not a newly setup unit....