A ppendix C

System Messages

ALARM MESSAGES

This appendix lists and defines the alarm and status messages that appear on the ESU 120e screen.

Network Interface (NI)

Loss of Frame

NI unable to frame align with incoming FAS /NFAS framing

 

pattern. Remote Alarm (Bit 3 of NFAS word) is transmitted out

 

the network interface. AIS (unframed ones) is transmitted out

 

the drop port.

 

 

Loss of TS16MF

NI unable to sync on TS16 multiframe signal. Valid only when

 

CAS/TS16 framing enabled. Remote multiframe Alarm is

 

transmitted out the network interface. ASI is transmitted out

 

the drop port in TS16 only.

 

 

Remote Alarm

Remote alarm signal (Bit 3 of NFAS word) being received at

 

network interface.

 

 

Remote MF

Remote multiframe alarm signal (Bit 6 of TS16 for three

Alarm

consecutive multiframes) being received at network interface.

 

 

AIS Received

Unframed ones being received at network interface. AIS

 

transmitted out drop port interface.

 

 

TS16 AIS RCVD

Unframed ones being received in TS16 on network interface.

 

Remote multiframe alarm transmitted out network interface.

 

AIS in TS16 is transmitted out drop port.

 

 

Loss of CRC-4

NI unable to sync on CRC-4 multiframe signal. Valid only

 

when CRC-4 framing is enabled. Remote Alarm is transmitted

 

out the network interface. AIS is transmitted out the drop port.

 

 

Loss of Signal

No signal detected at NI

 

 

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ESU 120e User Manual

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ADTRAN ESU 120e user manual Alarm Messages, Network Interface NI