Toshiba Strata DK 280 Installation Manual page 634

RDTU TO NETWORK OR LONG DISTANCE Ti PROVIDER
r
CUSTOMER SUPPLIED
CABLE (SEE NOTES) r- NDTU CABLE (30 ft. MAXIMUM)
NETWORK
INTERFACE
UNIT
USOC-RJ48C
OR RJ48X
8-PIN
, j(l) BLACK T (26) TRANSMIT
RDTU PCB
RECEIVE
CUSTOMER
SUPPLIED
csu
- L- NDTU DB-15
I-
- DB-15
CONNECTOR (MALE)
L NDTU
CONNECTOR (FEMALE)
AMPHENOL
CONNECTOR
(MALE)
'
(RJ45 TYPE JACK)
RDTU TO CUSTOMER PREMISE EQUIPMENT (CPE) Tl
r-- CUSTOMER SUPPLIED CABLE (SEE NOTES)
CPE Tl (PBX
OR KEY
L
SYSTEM) OR
CHANNEL
BANK
DK0515
L RDTU AMPHENOL
14
655 FEET MAXIMUM
b
General Notes:
l
Pins 2 and 4 of the DB- 15 connector in most CSUs are frame ground. No connection is required.
l
NDTU cable is supplied with RDTU PCB (30 f't maximum).
l
Set RDTU SW1 switch for proper loop length per Chapter 3-Cabinet Installation.
l
Customer supplied span cables must be 22 AWG, ABAM cable; or, if using standard 24 A WG twisted pair, the
transmit pair must be separated from the receive pair by at least 5-cable pairs. Most CSU manufacturers supply
cables to connect the CSU to the Network Interface Unit or other CPE equipment.
Figure 11-6
RDTU Cable Connections
11-10
January 1996