DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1354RING-GEN
9
RING-GEN
Analog Ring Generator
Analog phones must be provided with a voltage that allows them to ring. The
Analog Ring Generator maintenance object represents the device that provides
the ringing voltage for all analog phones associated with a given cabinet. In a
multi-carrier 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, it is the active Tone-Clock that performs this
function. In an EPN made up of single-carrier cabinets, the Tone-Clock monitors
only the ringing voltage in the carrier that contains the tone clock.
The TN2036 Voltage Range circuit pack provides easy access for testing the
various voltages on the backplane pins. For more information, refer to Chapter 5.
MO Name (in
Alarm Log) Alarm Level
Initial Command to
Run
1
1. P is the port network number indicated in the PORT field from the Alarm or Error Log.
Full Name of MO
RING-GEN MAJOR test environment P Analog Ring Generator
