Chapter 5. Configuration Menu

Table 5-1. Normal Mode of Operation

RTS

V.54

511 TST

Self Test

 

Netwk Test

No DS0

Network

 

Loopback

ON

Active

 

Active

Mapped

Alarm

 

 

 

 

 

 

 

 

CTS

Follows

OFF

OFF

 

OFF

OFF

OFF

 

 

 

 

 

 

 

 

DCD

OFF

 

OFF

OFF

 

 

 

 

 

 

 

 

DSR

OFF

OFF

 

OFF

OFF

 

 

 

 

 

 

 

 

Where “—” = don’t care

Force On = On under all conditions

This table indicates conditions which cause the PORT CONTROL

SIGNALS to be deactivated.

Dial Backup Config

Under DBU CONFIG, the menu items are:

Backup Mode

In a backup condition, both ends of the circuit must detect backup conditions before backup is activated. One DBU is set to ORIGINATE and the other to ANSWER. Upon a network failure, only the Originate DBU initiates backup by dialing the ANSWER END. Once called, the ANSWER DBU goes into backup mode only if a backup condition is detected. This is ideal for controlling where calls originate.

Choices: DISABLE, ORIGINATE, ANSWER

Backup On

Selects the conditions that cause the Nx/DBU to ini- tiate Backup.

NET FAIL

Backup occurs on RED ALARM, YELLOW ALARM, BLUE

ALARM and LOS.

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TDU 120e User Manual

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ADTRAN TDU 120e user manual Normal Mode of Operation, Dial Backup Config, Backup Mode, Backup On