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MERLIN LEGEND Communications System Release 6.1
Installation
555-661-140
Issue 1
August 1998
Installing the Control Unit
Page 2-30
Installing the Processor
Installing the Processor
Installing the processor includes the following procedures:
■ If
both
of the following conditions are true, follow the procedures in
“Modifying the Processor for Key Mode, in Chapter 9.”
— Form 1, System Planning, indicates Permanent Key mode.
— Form 2c, System Numbering: Line/Trunk Jacks, indicates
no GS (ground-start) trunks in the Incoming Trunk Type
column.
■ Insert the processor into the carrier as indicated in “Installing the
Processor in the Carrier,” later in this chapter.
NOTE:
If the system is programmed for Permanent Key mode, check the
switch setting. Refer to“Modifying the Processor for Key Mode”, in
Chapter 9 for detailed procedures. If the switch is set to Permanent
Key-only operation, all trunks revert to loop-start. If the switch is not
set, any programmed designation for ground-start trunks is
retained.
The ground-start pool never has trunks assigned to it automatically,
but must be programmed after the ground-start ports are
designated. Ground-start trunks are assigned to the ground-start
pool on initialization, except in a system switched for Permanent
Key mode operation. (In Release 1.0, ground-start and loop-start
trunks automatically defaulted to loop-start.)
Beginning with Release 3.0, the feature module required for
Release 2.1 and earlier is no longer needed. The Release 3.0
processor module contains a PCMCIA memory card interface
capable of accommodating a 4-MB memory card. This card is used
to install or upgrade system software and perform firmware
upgrades on circuit modules. It can be used to back up and restore
system programming.