Specifications

Reference Guide 2-11
System Installation Ringing Generators
Figure 2-6. -48V Converter Fuse
2.4 Ringing Generators
The ringing generator provides a ringing voltage of either 100 or 105 VAC (nominal) at 20 Hz
for simultaneously ringing 11 voice ports. If more than one ringing generator is required in the
same chassis, they must have the same model number.
The 100V and 105V Ringing
Generators cannot be mixed in a single chassis.
Make sure the system uses a -48V power source before installing any ringing generators. You
can install up to four ringing generators in a two-sided chassis, depending on the availability
of its slots. The front-loading chassis can have only one ringing generator each.
When two or more ringing generators are used, the outputs of all ringing generators are linked
together by OR circuits on the ringing bus. One generator must be jumpered as the MASTER
and the others must be jumpered as SLAVEs. The master ringing generator then synchronizes
the ringing signals on the ringing bus. Refer to the system specification section in this manual
for the ringing generators.
2.4.1 105V Ringing Generator
To install a 105V Ringing Generator, proceed as follows:
1.
Make sure power is turned off before inserting the ringing generator.
2. Make sure jumper W201 is installed if this is the only ringing generator in the unit, or
if it is the MASTER ringing generator, Figure 2-7. If this is a SLAVE ringing generator,
cut jumper W201 with wire cutters.
Fuse
Handle
Power
Bus
Edge
Connector