I'm not sure what version the Call Manager is. The phones are:

[link|http://www.cisco.com/warp/public/cc/pd/tlhw/prodlit/7940_ds.htm|IP Phone 7940] - Production floor
[link|http://www.cisco.com/warp/public/cc/pd/tlhw/prodlit/7960_ds.htm|IP Phone 7960] - Office

The phones support Cisco CallManager technology, H.323, or Session Initiated Protocol (SIP). Not sure which protocol we're using, but I suspect it's the Cisco CallManager as that's what the box is called that the consultants are setting up.