Vertical comdial DX-120, Installation And Maintenance Manual

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DX-120 Installation and Maintenance Manual
O
VERVIEW
CPM (Central Processor Module)
The CPM module is equipped standard in KSU1. This board contains all circuitry required to control the fully
equipped DX-120. The system uses the CPM to perform all digital voice switching and call processing data
switching.
The CPM has one ribbon cable connector for connection to the KSU1 408M and six (6) connector sockets for
connection of the system built-in modem, voice processor, and second cabinet (KSU2). Since the CPM comes
installed inside of KSU1 the CPM ribbon cable is already in place and connected to the KSU1-408M J5 socket.
Assuming the orientation of the KSU1 cabinet is installed on the wall; the two horizontal connector sockets in the
upper right corner of the CPM are for the MDM (Modem Module). The connector socket labeled “2nd Cabinet” is
for connection to theKSU2/408E if that expansion is required. The remaining two connector sockets on the CPM,
one at the left side, the other at the right side are for the voice processor solution.
NOTE
The voice processor solution can be any of three possible choices: AAM, 7271C,
or 7270C.
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The CPM also provides the following standard connectors:
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Music Channel 1 - On Hold/Background Music Interface
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Music Channel 2 - On Hold/Background Music Interface
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Control Contact (Loud Bell / Door / External Page Control)
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External Paging Equipment Interface
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RMP Serial Port - for onsite PC-DBA system database programming
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SMDR Serial Port - for connection to ancillary SMDR/Call Accounting equipment
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T1 or ISDN (T1/PRI)
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The CPM has two option strap jumpers one for database start-up (JE1) and one for music channel one source
(internal/external) selection (JPC1).
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JE1 Cold Start/Normal is used to force load database default factory settings. This jumper will normally
never require operation after the initial power up sequence is completed. However should the need arise
to return the site database to the factory settings this jumper is used to perform a cold start.
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JPC1 Internal/External is used to select the Music Channel 1 source. The DX-120 provides a
synthesized music source for music on hold, in applications where no music source is available. The
synthesized tune is repeated. JPC1 is in the “EXT” (i.e, external) position when it ships from the factory.