Go to www.cisco.com/smb and log in.
Click on Voice and COnferencing column, and then click the SBCS (second one down).
Since you're logged in, you will see a TAB on the next page called "For Partners" , go there.
Two up from the bottom is a link to "Partner Pages with a lock ICON", click that
Now you are where you will get all the information you need.
In particular, you want the Presales Resource called the UC560 Platform Reference Guide.
http://www.cisco.com/en/US/partner/prod/collateral/voicesw/ps6788/vcallcon/ps7293/reference_guide_c07-566560.html
In there you will find all the answers on licensing (you can connect as many phones as you like of whatever model you like up to the license limit), WAN interconnect limits if using FXO or T1 (there are no limts for SIP Trunk (only bandwidth SLA from SIP runk SP), COnference configuration (you can addjust how many members and how many conferences you want (Adhoc and Meetme; where 32 is the max in any one) and voice mail box sizes (total minutes can be sliced up as you want it (steal from the kitchen phone to pay paul).
Steve
