CHAPTER 2 INSTALLATION

 

 

 

INSTALLATION PROCEDURE

 

 

 

 

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 loopback 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

 

 

 

 

– 43 –

NWA-008869-001 Rev.1.0

 

atch2001.fm

Page 53
Image 53
NEC NWA-008869-001 manual Red Remains lit when detecting PCM signal loss, All channels are idle