Verilink NCC 2020 (880-503284-001) Product Manual - Manual (Page 13)

Overview
Verilink NCC 2020 User Manual 1-5
Port Usage Table 1-3 lists the connectors on both front and rear modules with
details about their uses:
Table 1-3 NCC 2020 Connector Ports
Port Located Usage
Craft Front Connect ASCII terminal for configuration, diagnostics, alarm monitoring,
and/or performance monitoring.
Bantam Jacks Front Monitor network signals, DSX-1 equipment signals, connect T1 test
equipment. These ports do not reflect line signals unless the module
is in CSU mode . Use only when in CSU mode (DIU bus = none).
Network Rear Connect the T1 line to this port.
Eqpt Rear Connect customer equipment which presents a DSX-1 T1 framed signal —
often a PBX. This port is only used if the module is in CSU mode or Drop and
Insert mode.
Management
Port In
Rear Connect a cable directly or a modem for dialup connection to a PC running
either of the Verilink management programs — AM2000 or Node Manager.
Management
Extension
Rear Connect a cable to an additional node at the same location. This feature is
only supported when AM2000 is used for node management.
Ext Timing Rear Connect an optional external clock source, using either a TTL (Transistor
Transistor Logic) level (0 to +5V) or balanced (RS-422) signal. The clock must
be at 1.544 Mbit/s.
Alarm Relay Rear Connect an external alarm system which will trigger on either a relay closure
(using NO and COM leads) or an open (using NC and COM leads). The relay in
the NCC module supports Form C relay specifications.