Avaya 03-300430 Manuale Utente

The TN574 DS1 converter has seven LEDs that provide an indication of the state of the DS1 
converter circuit pack and the DS1 facilities. There is a yellow, a green, and a red LED under 
software and/or firmware control. There are four Green LEDs under hardware control that 
indicate, for each DS1 facility, whether a receive signal is present for the DS1 facility. From top 
to bottom these green LEDs correspond to DS1 facilities A, B, C, and D respectively. If one of 
the four green LED is on, it indicates a signal is present, but it does not imply that the signal is 
using the correct framing format (ESF or D4) or line coding (ZCS or B8ZS). See section 
DS1C-BD for the description of the red, the green, and the amber LEDs on the DS1 converter 
circuit pack.
The TN1654 DS1 converter board has eleven LEDs on its faceplate. The top three system 
standard LEDs (yellow, green and red) are used to provide an indication of the state of the DS1 
converter board. The bottom four LEDs on the TN1654 board are labeled SPAN LEDs. These 
LEDs are under firmware control. If the facility is not administered, then the LED is not lit. The 
LED is lit amber if the facility is running alarm free. If the facility is detecting either a red alarm 
(loss-of-signal or loss-of-frame), a yellow alarm (remote frame alarm) or a blue alarm (AIS 
signal) then the LED is lit red. See section DS1C-BD for a complete description off all the LEDs.
The TN1654 DS1 converter circuit pack supports the Wideband Switching feature. The TN574 
DS1 converter does not.

Busy out the MO to gracefully disconnect service. Busyout puts the object out-of-service until 
the repair procedures are completed.
Use busyout ds1-facility to busy out DS1 facilities. When an attempt is made to busyout 

the packet facility (or primary facility), the system prints a warning message indicating that the 
override option must be used to busyout the packet facility. Busying out the packet facility 

moves the packet traffic to another facility, and disconnects circuit connections on that new 
facility.
The system does not allow the last packet DS1 facility to be busied out. In this case, busy out 
the DS1 converter circuit pack instead.
When the busyout ds1-facility command is executed, software communicates with both 

DS1 converter circuit packs in the DS1 converter complex. If the board at which the facility is 
being busied out is not accessible, the abort code 2100 is returned. If the board at the other end 
of the DS1 converter complex is not accessible, the abort code 105 is returned.

DS1 facility administration is a part of the fiber link administration. DS1 options are set on the 
Fiber Link Administration screen. For critical-reliability systems, the Fiber Link Administration 
screen contains the DS1 facility options for the B side of the PNC.