Cable Lengths - Toshiba DK14 Installation And Maintenance Manual

Cable Lengths

In a single site installation, the Base and optional Expansion Cabinets must be placed within the
allowed maximum distance of each other as designated by
Table 5-2 Station Loop Requirements
Interface PCB
Device
PDKU (1~8)
1
Digital telephones or
RDSU (5~8)
DDSS consoles PDKU (8)
PDKU (1~8)
PDIU-DS or
RDSU (5~8)
PDKU or
DDCB
RDSU (5)
Attendant Console RATU (1~4)
PEKU (5) or
HDCB
PESU (5)
Electronic telephones PEKU or PESU
RPCI-DI PDKU (1~8)
or or
PDIU-D12 RDSU (5~8)
PDKU (1~8)
DADM or
RDSU (5~8)
RATI RATU (1~4)
HDSS consoles PEKU (7 & 8)
PSTU (1~8)
or
PESU (1 & 2)
RSTU (1~8)
Standard telephones,
RDSU/RSTS (1~4)
voice mail, Auto
without R48S
Attendant, etc.
option
RSTU (1~8)
RDSU/RSTS (1~4)
with R48S option
1. Two-pair wiring or optional telephone power supply is required to achieve maximum range with DADM, OCA, Headset, or
Data Interface Unit.
2. PESU circuits 3 and 4 are not used.
3. See manufacturer's product specifications for exact resistance of device.
Remote Expansion Cabinets may be installed up to three kilometers away, using fiber optics and
RRCU1A PCBs.
Strata DK I&M 5/00
No. of Wire Pairs
(use 24 AWG
Circuits
twisted pair)
1-pair
2-pair
2
2-pair (3-pair
required for OCA)
Shares digital
telephone wire-
1
pair
1 or 2-pair
2-pair
1
1-pair
Table 5-2.
Max Loop
Resistance Maximum Distance from
(including Cabinet to Device
device)
40 ohms 1000 ft. (303 m)
20 ohms 500 ft. (152 m)
Approx. 3000 ft. (909 m)
300 ohms
with 150 ohm device.
Approx. 9000 ft. (2727 m)
600 ohms
with 150 ohm device.
Approx. 21000 ft. (6363 m)
1,200 ohms
with 150 ohm device.
DK424 Installation
Site Requirements
3
3
3
5-5