T1

RDTU3 - T1 Interface Unit

Table 8-2 RDTU3 LED Functions

 

 

 

 

 

RDTU3 LEDs

Indication

 

 

 

Frame Sync error indication

 

 

FSYNC

On = No frame synchronization status

 

 

 

Off = Frame synchronization status

 

 

 

 

 

 

 

Multi-frame Sync error indication (same with FSYNC)

 

 

MFSYNC

On = No frame synchronization status

 

 

 

 

Off = Frame synchronization status

 

 

 

 

 

 

 

Blue Alarm indication

 

 

BALM/AIS

On = RDTU3A is receiving Blue Alarm

 

T1

 

Off = RDTU3A is not receiving Blue Alarm

 

 

 

 

 

 

 

 

 

Yellow Alarm indication

 

 

YALM/RAI

On = RDTU3A is receiving Yellow Alarm

 

 

 

Off = RDTU3A is not receiving Yellow Alarm

 

 

 

 

 

 

 

Signaling Loss indication

 

 

LOS

On = RDTU3A is not receiving T1 signals

 

 

 

Off = RDTU3A is receiving T1 signals

 

 

 

 

 

 

 

Busy state indication

 

 

 

On = One or more RDTU channels are in use

 

 

BSY

Or RDTU is not receiving T1 signals

 

 

 

Off = No RDTU channel is in use

 

 

 

Flashing = RDTU is in Remote Loop Back mode

 

 

 

 

 

 

 

Primary synchronization indication

 

 

PSYNC

On = RDTU is assigned as the primary timing PCB

 

 

Off = RDTU is not assigned as the primary timing PCB

 

 

 

 

 

 

Flashing = RDTU is extracting T1 CLK

 

 

 

 

 

 

 

Secondary synchronization indication

 

 

SSYNC

On = RDTU is assigned as the secondary timing PCB

 

 

Off = RDTU is not assigned as the secondary timing PCB

 

 

 

 

 

 

Flashing = RDTU is extracting T1 CLK

 

 

 

 

 

 

For more detailed information on these alarms, refer to Table 8-6 on page 8-8.

Strata CTX I&M 06/04

8-3

Page 311
Image 311
Toshiba CTX28 manual RDTU3 LED Functions RDTU3 LEDs Indication, Fsync