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Table2-5 Main Console Module LED Definitions
Green
Main power supply is on
PWR
Power
Indicator
Off
Main power supply is off
Off
System is locked in a non functional state
Flashing Green
Normal
Red
System is in the start up mode, not ready for
operation
STU
Status
Indicator
Flashing Red
System is in the diagnostic mode with limited
operation capability
Green
Clear of all alarms
Flashing Red
New alarm condition from an unknown source
ALM
Alarm
Indicator
Red Alarm
with
identified
source
2.2 FXS Line Interface Module
Figure 2-2 FXS Interface Module Physical View
GT48 FXS interface module provides the interface to analog phones and PBX. Each GT48 FXS interface module
provides up to 24 ports. Each GT48 can have up to two FXS interface modules, 48 analog ports. FXS interface
module provides 50 pin CHAMP connector. Table2-6 shows the scheme of the 50 pin CHAMP connector. GT48
supports two configurations of the FXS interface module
：
12 port FXS module (FXS-12) and 24 port FXS module
(FXS-24) .On the FXS-12 interface module, the pins from 13 to 24 are not used.