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Section
Chapter 6. Double-Cabinet Systems
Guidelines
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Two DBS cabinets can be connected to increase line size. The maximum
line size consists of
two
DBS 96 cabinets, which provide 192 ports.
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CPC-B and SCC-B are required for two-cabinet systems.
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If ground start or DID trunks are used in both cabinets, separate -48V
supplies must be supplied for each cabinet.
are used in both
cabinets, separate SLT ringer boxes must be supplied for each cabinet.
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The following table shows the acceptable combinations of system types
Table 6-I. Trunk and extension
maximums for double-cabinet systems
System
binations
Master
Slave
DBS 40
DBS 40
DBS 72
Trunk Extension
Ports
Ports
16
48
24
72
Expansion Ports
(Trunk lines or
extensions)
8 (See Note 1.)
0 (See Note 2.)
DBS 72
DBS 72
32
96
8 (See Note 1.)
DBS 96
DBS 40
32
88
16
DBS 96
DBS 72
40
112
16
DBS96 DBS96
128
I
Notes:
1. The slave cabinet must be used for expansion ports.
2. When a DBS72 and DBS40 are connected, expansion ports cannot be
used.
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Figures 6-l through 6-6 shows slot usage for two-cabinet combinations.
DBS-70-300
DBS Manual Issued
6-3
Summary of Contents for DBS 40
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