Toshiba Strata AirLink DK280, Installation Manual

Page: 51 / 878

Worksheet
-
System
PCB
Requirements (continued)
1
C4. Determine Station PCBs
Slots
Required (Refer to Table
1-2
for PCB information)
(round up)
C4.1
Total PDKU PCBs
=
DIGITAL
PORTS (from
8
(Refer to C4.3 before
finalizing this number)
Total PDKU PCBs (Slots)
=
General Notes:
PDKU provides eight digital telephone ports (circuits). Circuit 5 (when associated with ports
004,
0
020, and 028) can only interface with a DDCB. Circuit 8 can only inferface with a
DDSS console (see Table 1-6).
The can also be used. The PDKU can only support Data Interface Units
on
circuits
1
-
7, while the can support on all eight circuits. See Worksheet 2,
Table 1-8 (Example) for slot limitations.
STANDARD PORTS (from C2)
C4.2 Total RSTU PCBs
=
Total RSTU PCBs (Slots) =
(round up)
General Notes:
The or PSTU 1 can also be used. These earlier version PCBs can interface with
same devices that the RSTU can, but they have different ring generators and cannot support
See the STU 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 to
extend loop length of the RSTU from
600
ohms to 1200 ohms (see Table
is required to operate message waiting lamps on a standard telephone.
C4.3
RDSU (RSTS) can be used when four or less digital or standard ports are needed.
Total RDSU PCBs four standard ports
Total RSTS PCBs adds two standard ports to RDSU
General Notes:
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 to extend the loop length
of the RSTU standard telephone ports from 600 ohms
to
1200 ohms (see Table
1-4).
(round
up) C4.4
Total PEKU PCB Slots = ELECTRONIC PORTS (from C3)
8 8
(Refer to C4.5
before finalizing
this
number)
Total PEKU PCBs (Slots) =
General Note:
PEKU provides eight electronic telephone ports (circuits). Circuit 5 (when associated with ports
004,
020, or 028) can only interface with an HDCB. The HDSS consoles requires two
circuits, circuits and
8,
on a PEKU (see Table
1-6).
Each conference amplifier requires use of
circuits
2
and 3 of a PEKU.
January 1996
1-39