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 p rovided 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 d istribution unit . It is
protected by a fus e located next to the main circ uit breaker on the front of the
unit. In single-carrier cab inets, the ring generator is pa rt of the WP-91153 power
supply. Failure of the ring generator results in loss of ring ing on analog phones.
Ringing on digital and hybrid phones is not affec ted.
The ringing voltage is monitored b y the Tone-Clock circuit pack. In a p ort network
with duplicated Tone-Clocks, it is the active Tone-Clock that performs this
function. In an EPN made up of single-c arrier cabinets, the Tone-Clock monitors
only the ringing voltage in th e carrier that contains the tone cloc k.
The TN2036 Voltage Range circuit pack provid es easy access for testing the
various voltages on the bac kplane pins. For more information, refer to Chapter 5.
MO Name (in
Alarm Log) Alarm Level Initial Command to
Run1
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