Time Switch Card - Tsw-288 (Vb-444202); Time Switch Card - Tsw-576 (Vb-444302); Building Block Expansion Cable Kit - Cbl (Vb-44451); Dbs 576 To Dbs Expansion Cable Kit - Cbldbs (Vb-44452) - Panasonic DBS 576 Technical Manual

Time Switch Card - TSW-288 (VB-444202)

The TSW-288 provides the time switch circuitry required for up to 288 ports. This card must be used
with the CPC-288. This unit installs in the first option slot of the first Base cabinet. Only one card can
be installed in a system.
The TSW-288 provides the time switch (14 highway X 14 highway), service tones, DTMF generator,
connecting terminals for network synchronizing unit interface, and eight 3-party conference circuits.

Time Switch Card - TSW-576 (VB-444302)

The TSW-576 provides the time switch circuitry required for up to 576 ports. This card must be used
with the CPC-576. This card installs in the first option slot of the first Base cabinet. Only one card can
be installed in a system.
The TSW-576 provides the time switch (24 highway X 24 highway), service tones, DTMF generator,
connecting terminals for network synchronizing unit interface, and eight 3-party conference circuits.

Building Block Expansion Cable Kit - CBL (VB-44451)

This card supports the interconnection between DBS 576 cabinets in a multiple-cabinet system. This
card establishes the bus connections (PCM highway and terminal control) of the Base cabinet and
additional DBS 576 cabinets. It also controls the connection to the time switch unit (TSW-288/TSW-
576) in the first Base cabinet.
Each cabinet after the first cabinet requires a CBL kit. The supplied card must be installed in the main
processor slots of all but the first cabinet. The supplied intercabinet connection cable is used with
each added cabinet.

DBS 576 to DBS Expansion Cable Kit - CBLDBS (VB-44452)

The CBLDBS card supports the
interconnection between cabinets
when DBS cabinets are connected
to the DBS 576. This card
establishes the bus connections
(PCM highway and terminal
control) between the base DBS
576 cabinet and the DBS
cabinet(s). It also controls the
connection to the time switch unit
(TSW-288/TSW-576) installed in
the first Base cabinet.
The CBLDBS card installs in the
AUX1 slot of each connected DBS
cabinet. An inter-cabinet
connection cable is used with each
cabinet.
NOTE: The DBS-576-to-DBS
configuration can support a maximum
of 528 ports, including the ports in the
DBS cabinet. Up to 2 DBS cabinets
can be included in the configuration.
DBS DEC (Digital Extension Cards)
are supported, but there is no DBS
TRK (trunk) card support. A special
MDF board is required; it's included
with the CBLDBS kit.
CPC
CBL
Supply
Unit
DBS 576
Expansion
Cabinet
CPC
Power
CBL
Supply
Unit
DBS 576
Expansion
Cabinet
CPC
Power
CBL
Supply
Unit
DBS 576
Base
Cabinet
Switch
Box
DBS
CBLDBS
Cabinet
DBS
CBLDBS
Cabinet
OP1
Power
Supply
Unit
Switch
Box
Chapter 2 - System Hardware
AUX1
AUX1
TSW576
DBS 576
Base
Cabinet
23