Specifications

Page 7–6
FOCUS System Manual
Interfaces RS-232 (Front panel PC Interface)
Special rear panel PC Interface
RJ-9
Connectors RJ-9 jack
DB9 female (Front Panel RS-232)
DB9 female (Rear Panel, special configuration)
Processor Intel 80C188
Storage Flash ROM for storing the operating system
128K non-volatile RAM for storing system configuration, settings, &
real time clock
Event Buffer holds 1,000 events
Functions Defines system configuration
Performs self testing diagnostics
Recognizes and isolates failed modules
Interfaces to PC and FCS to configure and test the system
Provides party line order wire (PLOW) voice channel with signaling
Indicators Status LED Remote user logged in
TX data to FCS PLOW break (E1)
RX data from FCS Superframe Sync. Enable (T1)
Synchronizing direction Chassis locked/unlocked
Slave/master status Channels flipped (APM)
TX alert for digital phone System armed (APM)
RX alert for digital phone
Framer Use TE1 framer (MV5 used in T1 or E1 systems)
E1 framer (MV4 used in E1 systems only)
Minor Alarm Carrier Failure (low signal) Channel Module Failure
Redundant PS failure Expansion Chassis Fail
Novram Battery Failed DS0 Loopback Present
Novram Restored from Flash PRI Redundant Path Fail
No Transceivers installed PRI Installed w/unsupported rev.
Major Alarm E1 System in loopback Transciever with bad status
Low voltage (XCVR pulled from locked chassis)
Out of Sync. Both power supplies bad
Table 7–2. Maintenance Module (MV4, MV5) Specifications.