NEC Neax 2000 IVS2 Manual page 158

Lamp Indications
LAMP
COLOR
NAME
RUN Green
B1 Green
B2 Green
D Green
ALM Red
2
NEAX2000 IVS ISDN System Manual
ND-70919 (E), Issue 1.0
Flashes at 120 IPM while this card is operating normally
B1 channel status
ON: Busy
OFF: Idle
Flash (60 IPM): Make Busy
B2 channel status
ON: Busy
OFF: Idle
Flash (60 IPM): Make Busy
D channel status
ON: Busy
OFF: Idle
Transmission line fault status
ON: Line fault
OFF: Normal operation
CHAPTER 4 CIRCUIT CARD INFORMATION
FUNCTION
PN-BRTA (BRT)
Page 147