Before I was configuring UC520's, I was familiar with the Linksys One system. The Linksys One system had what was called a group (in the 2.0 or 2.1 releases), or a simultaneous ring group (in the 2.2 release). A group extension in Linksys One is an extension that rings on one or more phones, is separate from any personal extensions, contains one or more users, and can have a voicemail box associated with the group extension. Cisco Unified Communications Manager Express and Cisco Unity Express, which is included on the UC520 and available on other routers, has capabilities equivalent to a group in Linksys One. Cisco Configuration Assistant is not currently capable of configuring this feature, but it can be configured on the UC520 through the command line interface.

Is there a way to make the UC500 ring twice before going to automatic attendant after a business is closed, and still maintain the normal ring pattern during the day?

Cisco Unified Communications Manager Express is out and available for download at http://www.cisco.com/cgi-bin/tablebuild.pl/ip-key

This product is available for the Intergrated Services Router (ISR) platform.

It probably won't be available for the UC500 for a couple of months.

3rd party products that interface with the UC500 and provide Call Accounting.

ISI http://www.isi-info.com/ or Stonevoice http://www.stonevoice.com/

I ran into a situation where Message Notification via telephone was not working. The problem was that Unity Express was sending a calling party CLID of 5000; the Voice mail pilot extension.

Here is a quick guide on customizing the Auto Attendant settings and prompts on the UC520.