User guide

Table Of Contents
Installation
21
Before you begin
Hardware ports and connectors
Figure 2: Controller front panel
Power LED
Configure switch
ONS ports (two)
Music on hold socket
Reset switch
Expansion slots for optional modules (three)
LS/CLASS modules (four)
WAN Ethernet port
RS-232 connectors:
Top connector is for call logging (SMDR)
Bottom connector is for diagnostics
Powered Layer-2 Switch ports (eight)