Inter-Tel CS-5200 580.1000 (v2.1.0.12 - 9IPa) KSU with 3 Expansion Slots. Licensed for 4 Basic Voice Mail Ports, 9 Category A (8622/8662/8690) IP Endpoints, 1 DEI Expansion Cabinet, 1 T1/PRI Circuit, Extended Note Capacity, and 3 IP Networking Channels.
