NEC NEAX2000 IVS2 system manual Lamp Color Function Name, Crc

CHAPTER 4 CIRCUIT CARD INFORMATION

List of Required Circuit Card

Lamp Indications

LAMP	COLOR		FUNCTION
NAME
RUN	Green	Flashes at 120 IPM while this card is operating normally.
CRC	Red	Remains lit when detecting Cyclic Redundancy Checking (CRC)
		errors.
PCM	Red	Remains lit when detecting PCM signal loss.
FRM	Red	Remains lit when detecting Frame Alignment signal loss.
RMT	Red	Remains lit when receiving Frame Alignment signal loss alarm
		from a distant office.
AIS	Red	Remains lit when a pattern of consecutive “1” is received. The
		distant office transmits this signal for a loop-back test.
BL	Red	B Channel status
		ON	: More than 10 channels are busy
		OFF	: All channels are idle
		Flash (60 IPM)	: Only one channel is busy
		Flash (120 IPM) : 2 through 10 channels are busy

NEAX2000 IVS2 Q-SIG System Manual	Page 57
ND-70923 (E), Issue 1.0