Cisco Call Manager

My Company is plan to implement the New IPTelephone System and migration from PBX to that System.

What, I'm to do is just add a Cisco Call Manager (because i have Cisco Network already)....Can any body help me what model (hardware) for the best 60-80 users and how can I configure that model ?.

Thanks.

radar2718,

60-80 users is supported by the Unified Communication Manager (server based) and Unified Communication Manager Express (Call Manager Express) which is based on cisco routers.

Which of the two are you considering?