Data Channel Front Panel - General DataComm OCM-2000 Installation & Operation Manual

Data Channel Modules

Data Channel Front Panel

Table 5-1 shows a typical front panel of all data channel modules and explains the function of each
switch and indicator (shown: Dual data Channel Module). You can check the operation of each unit
by monitoring the front panel indicators. The colors of the LED indicators on the modules front
panels are consistent in function:
• Red and yellow are used for alarms or "service-affecting" conditions. This includes test
modes that are interfering with normal user data.
• Alarm conditions depend on the modules, but normally, red indicates a Major Alarm (a
number of problems), and yellow indicates a Minor Alarm (channel alarms).
• The green LED indicators are used for all other conditions, including data activity and
E&M signaling leads.
Table 5-1 Network LIM Front Panel
Front Panel
In
Svce
Data
In
Data
Out
Alm
Test
Chan A
In
Svce
Data
In
Data
Out
Alm
Test
Chan B
DUAL
DATA
CHAN
232
Note
The front panel features are the same for all versions of the Dual and High Speed Data Channel modules.
5-4
Item Description
In Service Green LED indicates when the channel is entered in the currently
active TDM configuration. This indicates that the module is operating.
Data In Green LED indicates spaces in transmitted data.
Data Out Green LED indicates spaces in received data.
Alarm Yellow LED indicates an alarm condition exists in the channel. Possible
alarm conditions are: Channel transmit clock bad, channel receive
clock bad, loss of subaggregate sync for the channel.
Remote Alarm Yellow LED indicates an aggregate yellow alarm. Both local and remote
LED on indicates AIS condition.
Test Yellow LED indicates module is performing power-up self-test or other
diagnostic test.
Office Connunications Manager OCM-1000/OCM-2000
Installation & Operation
036R340-000
Issue 16