Avaya 03-300430 User Manual

Analog phones must be provided with a voltage that allows them to ring. The Analog Ring 
Generator MO represents the device that provides the ringing voltage for every analog phone 
associated with a given cabinet. In a multicarrier cabinet, the ring generator resides in the power 
distribution unit. It is protected by a fuse located next to the main circuit breaker on the front of 
the unit. In single-carrier cabinets, the ring generator is part of the WP-91153 power supply.
Failure of the ring generator results in loss of ringing on analog phones. Ringing on digital and 
hybrid phones is not affected.
The ringing voltage is monitored by the Tone-Clock circuit pack. In a port network with 
duplicated Tone-Clocks, the active Tone-Clock performs this function. In a PN made up of 
single-carrier cabinets, the Tone-Clock monitors the ringing voltage of only the carrier where it 
resides.
The TN2036 Voltage Range circuit pack provides easy access for testing the various voltages 
on the backplane pins.

Note:

a. Error Type 0: run the short test sequence first. If every test passes, run the long test 

sequence. Refer to each test’s description, and follow its procedures.

RING-GEN

MAJ

test environment location

Analog Ring Generator

0

Any

Any

Any

1

Analog Ring 

Generator Query 

(#118)

MAJ

ON

test environment location r 3