Toshiba Strata DK 280 Installation Manual page 30

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Worksheet
C4. Determine Station PCBs / Slots Required (Refer to Table 1-2 for PCB information)
C4.1 Total PDKU PCBs
General Notes:
PDKU provides eight digital telephone ports (circuits). Circuit 5 (when associated with ports
004, 012, 020, and 028) can only interface with a DDCB. Circuit 8 can only interface with a
DDSS console (see Table 1-6).
The PDKUl can also be used. The PDKUl can only support Data Interface Units (DIUs) on
-
circuits 1
Table 1-8 (Example) for slot limitations.
C4.2 Total RSTU PCBs
General Notes:
The PSTU2 or PSTU 1 can also be used. These earlier version PCBs can interface with the
same devices that the RSTU can, but they have different ring generators and cannot support
MW. See the RSTWPSTU section in Chapter 4-Printed Circuit Boards for more details.
The RSTU provides eight standard telephone ports (circuits). Circuit 2 only can connect
to a separate Background Music (BGM) source. The RSTU can be equipped with an R48S to
extend the loop length of the RSTU from 600 ohms to 1200 ohms (see Table 1-4).
c4.3
Total RDSU PCBs
Total RSTS PCBs
General Note:
RDSU provides two standard telephone ports (circuits) and four digital ports (circuits) in its
basic configuration. The optional RSTS can be attached to the RDSU to provide two more
standard telephone ports. The RSTU can be equipped with an R48S to extend the loop length
of the RSTU standard telephone ports from 600 ohms to 1200 ohms (see Table 1-4).
Total PEKU PCB / Slots =
General Note:
PEKU provides eight electronic telephone ports (circuits). Circuit 5 (when associated with ports
004, 012, 020, or 028) can only interface with an HDCB. The HDSS consloles requires two
circuits, circuits 7 and 8, on a PEKU (see Table 1-6). Each conference amplifier requires use of
circuits and
2
1-18
System P C B (Slot) Requirements (continued)
DIGITAL PORTS (from C1)
=
8
Total PDKU PCBs (Slots)
7, while the PDKU2 can support DIUs on all eight circuits. See Worksheet 2,
STANDARD PORTS (from C2)
=
8
Total RSTU PCBs
ELECTRONIC PORTS (from ~ 3 )
Total PEKU PCBs (Slots)
a PEKU.
3 of
47
-
8
7
-
8
(Slots)
=
four digitalhwo standard ports
0
adds two standard ports to RDSU
8
=
-
6
(round up)
(Refer to C4.3 before
finalizing this number)
(round up)
8
(Refer to C4.5
before finalizina
this number)
January 1996