Avaya 03-300430 User Manual

The emergency transfer feature connects some central office trunks directly through to analog 
user stations when the system has a serious problem or experiences a total power failure. 
Emergency transfer is activated by the TN2312BP IPSI when:

●

The system is booting.

●

The cabinet containing the TN2312BP IPSI board is in power failure.

●

The TN2312BP IPSI has detected a loss of control connectivity for more than 70 seconds.

●

The server has detected a serious problem in the cabinet.

●

A request is made from a SAT command to set the state of emergency transfer.

further information.

This is introduced to set the state of emergency transfer (set emergency-xfr on | off | 
auto location), because a physical switch is not provided on the faceplate of the TN2312BP 

IPSI circuit pack to control the state of emergency transfer. 
The TN2312BP IPSI supplies -48V DC voltage to an emergency transfer panel. This -48V 
supply keeps relays within the emergency transfer panel operating which, in turn, keep analog 
stations and CO trunks wired to ports (station and trunk respectively) on the system. When the 
TN2312BP IPSI is supplying -48V, the state of emergency transfer is off. When a problem is 
detected and the TN2312BP IPSI stops supplying -48V the state of emergency transfer is on. 
When the TN2312BP IPSI is in the auto state, it is usually supplying -48V to the emergency 
transfer panel, but automatically switches to the on state and stops supplying -48V if it detects a 
problem.

CAB-EXFR

MIN

test environment location sh

Emergnncy Transfer

CAB-EXFR

MAJ

test environment location l

Emergency Transfer