Control Unit - Lucent Technologies MERLIN 820 Service And Maintenance Manual

CONTROL UNIT

The control unit provides power for most voice terminals and accessories. All outside lines
and all voice terminals and telephones connect to the control unit, which contains the
microprocessor and memory for all the advanced features available with the MERLIN
communications system.
NOTE: Page 7 explains in greater detail the physical features of the Models 206 and 410
control units. Since they are the same except for the number of outside line jacks and the
number of voice terminal jacks (Model 206 control unit has 2 outside line jacks and 6 voice
terminal jacks; Model 410 has 4 outside line jacks and 10 voice terminal jacks), only
Model 410 is pictured on page 7.
Model 206 Control Unit
Behind the removable front panel of the Model 206 control unit are 6 jacks for voice terminals
labeled 0 through 5, and 2 jacks for outside lines labeled A and B. On the right side are
horizontal slots for the three types of cartridges available to expand the MERLIN system's
capabilities.
Outside
line jacks
Voice
terminal jacks
Model 410 Control Unit
Behind the removable front panel of the Model 410 control unit are 10 jacks for voice terminals
labeled 10 through 19, and 4 jacks for outside lines labeled A through D. The Model 410
control unit has horizontal slots on the right side for the three types of cartridges available to
expand the MERLIN system's capabilities.
Outside
line jacks
Voice
terminal jacks
6
Cartridge slots
Cartridge slots