Can someone tell me the primary differences between the Cisco SA500 series and the ASA 5000 series.  I'm trying to determine which security appliance to utilize in front of a Cloud PBX.  Essentially, the Cloud PBX provider's point of demarcation woul...

I have a potential customer who really wants to use the 8961 IP phone with a UC540.  I couldn't find any documentation indicating whether or not the 8961 is compatible with the UC540 or the UC560.  Is the 8961 supported on the UC5xx platform?  Also, ...

I am looking for an updated guide for configuring a Cbeyond SIP Trunk (SIPconnect) for a UC540.  I've seen two old configuration guides.  Both of the old guides refer to the UC520.  One is from 2008 and references CCA 1.8.  The other is from 2009 and...

I use a UC520 as my router, DHCP server and have NAT and the firewall turned ON.  I need to open some external ports in the firewall for Microsoft Lync, specifically:  Ports Needed Open in External FirewallPortProtocolDirectionUsage443STUN/TCPOutboun...

I just installed CCA 3.1.1, and I'm trying to access the NAT features on a UC520 by going to Configure then Security then NAT.  When I click on NAT, it starts loading security related data.  The progress bar goes almost to the very end, but then it j...