What is the Cisco Unified Communications 500 Series? Think of it as a Swiss Army Knife for Small Business. In one appliance form, Cisco combines:
The initial release of the UC500 has The capacity for 8 IP phones and is expandable to 16 IP phones by adding the UC520 POE switch pictured on top of the router on the picture above. Our sources at Cisco indicate that the system will be eventually expandable to a max of 48 IP phones. The System also has 4 built in FXS connections for analog phones or fax machines and 4 FXO ports for connections to the PSTN The 500 also has a VIC slot to add up to 4 more FXO or FXS connections. The system also has 2 built in Ethernet Ports. There is no PRI-T1 option at this time, but with the size of the system it may not be needed. The system also supports SIP trunking and has the CallManager Express feature set that is also available on the Cisco Integrated Services Router Platforms. More Complete information is available at http://www.cisco.com/en/US/partner/products/ps7293/products_data_sheet09...
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No Routing Protocols on UC500
I think we've all heard that the UC500 is designed primarily for a small office setting with no branch offices or inter-connection to remote sites. In a test setup I tried running DMVPN (Dynamic Mulitpoint VPN) on the UC500 and two remote 870-series routers. While it appears that most VPN functions are included in the IOS, there are NO routing protocols - NO RIP, NO EIGRP, nothing. You can use static routes.
At first this seems pretty lame that a Cisco product (company founded on routing protocols) wouldn't support routing protocols - but given that most deployments with the UC500 should be between 1 main office and MAYBE a max of two remote sites / teleworkers this shouldn't be too bad. Just be aware that at a remote site there is no failover capability and no connection to the PSTN directly. To do that you would have to deply UC500s at each site and do some VoIP dial-peers over static VPN routes.