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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...
Thanks to everyone for their replies. Interestingly, Lync suddenly started working all by itself. I hadn't even made any changes to the UC520 yet. So, it looks like it was a Microsoft Lync server problem in the cloud. I guess this means the outbo...
I am getting the following error when trying to login to Lync:"Cannot sign in to Lync. There was a problem acquiring a personal certificate required to sign in. "I wanted to make sure I had the right ports open before contacting Microsoft support. I...
I realize it's been a couple of months since the original post, but I was waiting to install the latest version of CCA and the latest UC520 software pack before I did anything else. Installing the latest versions (CCA 2.2.4 and software pack 8.0.2) ...
Aaron:I'm not a CLI person. I've done a show running config in the past, but I'm not sure I remember the command for that. Also, once I get the running config to come up, how do I know which ephone and ephone-dn refers to the phone that I want. Lastl...
