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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1197RING-GEN (Analog Ring Generator)
10
RING-GEN (Analog Ring Generator)
All analog phones in DEFINITY Generic 1 cabinets 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 analog phones in a multicarrier or
single carrier cabinet system. In a multicarrier cabinet system, the Analog Ring
Generator resides in the PDU. Figure 10-81
shows the position of the PDU and
illustrates that fuse F9 is used for the Analog Ring Generator. Figure 10-82
shows
the position of the fuses on the PDU and describes how to replace a fuse. In a
single carrier cabinet system, the Analog Ring Generator is part of the WP-91153
power unit, and each carrier in the single carrier cabinet contains its own Analog
Ring Generator. A ringing voltage generator failure means that no ringing will
occur on analog phones; however, ringing on digital and hybrid phones will still
occur.
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.
Also, if the TN2182 Tone-Clock is installed in the Processor Interface slot, the
ringing voltage is not monitored.
The TN2036 Voltage Range circuit pack provides easy access for testing the
various voltages on the backplane pins.
1. Where P is an appropriate port network number determined via the Port field from the
Alarm or Error Log.
MO Name As
It Appears in
Alarm Log
Alarm
Level
Initial System Technician
Command to Run
1
Full Name of MO
RING-GEN MAJOR test environment P Analog Ring Generator