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INSTALLATION-CONFIGURATION
SECTION 200-096-204
FEBRUARY 1991
TABLE 4-F
OPTIONAL SUBASSEMBLY PCB CONFIGURATION
Subassembly
PCB
Main PCB (Mount) Capacity
Function
Provide off-hook call
EOCU’
PEKU or PESU
One for each PEKU or
announce path for all
PESU that supports OCA
electronic telephone
circuits of main PCB
CRCU
PCTU (1, 2, or 3) or
Provides DTMF receiver for
(4
or 8
PCTUSl
One per PCTU/system
DISA, standard telephone/\/M
circuits)
circuits and TIE lines
IMDU PIOU and PIOUS
One per PIOU or PIOUS/
Remote maintenance
system
interface with built-in modem
HHEU
HVSU
HVSI
DVSU
6500-series electronic
telephone and 1 OOO-
series digital telephone
6500-series electronic
telephone
6500-series electronic
telephone
1 OOO-series digital
telephone
One per electronic or
digital telephone
One per electronic
telephone
One per electronic
telephone
One per digital
telephone
Interface for headset and
loud ringing bell2
Interface for electronic
telephone to receive
off-hook call announce
Interface for electronic
telephone to receive
off-hook call announce
Interface for digital
telephone to receive
off-hook call announce
NOTES:
1, An EOCU (OCA) will not function in slots 11 * 140n DK96orslots05-060n DK24 with PCTUSl.
2. One HESC-65 cable (for electronic telephones) or one HESC-65A cable (for digital or electronic
telephones) is required to connect the HHEU to the HESB for the loud ringing bell option.
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