I have a kind of a unique problem. I have a UC520 installed with 3 PSTN lines plugged into the FXO ports. The problem is that one of the lines is not passing Caller-ID information, while the other 2 are. I've verified that caller-ID information is av...

I have a customer that wants to install a new phone system. They have about 25 employees in the office, and another 80 external users.The internal users will each have a phone on their desk, where the external users will simply have any call for them...

I have a 7942G that I want to configure to vpn into a UC540. The problem I'm having is that when I go to Security Settings, and try to enable the VPN setting, it says that the Enable key is Not Active Here. So, I can't enable the VPN feature of the p...

I have a multi-site configuration with UC540 at the primary, and UC520 at the secondary.The primary receptionist is at the primary site. There is a 7961 with 7914 sidecar on the receptionists desk. My question is, is there a way to put extensions fro...

This may not initially sound like a UC500 issue, but please be patient with the description.I have a customer that has 2 sites, primary and secondary. They were initially connected via vpn using ASA5505, and all phones registered to a single UC540. P...