Toshiba Strata DK 280 Installation Manual page 307

NETWORK
INTERFACE
L
UNIT
USOC-RJ48C
OR RJ48X
8-PIN MODULAR
RDTU TO NETWORK OR LONG DISTANCE Tl PROVIDER
r
CUSTOMER SUPPLIED
CABLE (SEE NOTES) NDTU CABLE (30 ft. MAXIMUM)
--(1)
BLACK T (26) -
RED
Cl'mTnL"rn
(9) 1 R (1) TRANSMIT
13 I UIVlti-5
Sl JPPLIED
(3)
WHITE Ti (27)
RDTU PCB
(11) I)
GREEN RI (2)
RECEIVE
csu
L
CONNECTOR (MALE)
L- NDTU
AMPHENOL
Jrl (I-CI"I~Llz,
CONNECTOR
- NDTU DB-15
(RJ45 TYPE JACK)
CPE Tl (PBX
OR KEY
SYSTEM) OR
CHANNEL
BANK
L DB-15
- -.
(MALE)
RDTU TO CUSTOMER PREMISE EQUIPMENT (CPE) Tl
r CUSTOMER SUPPLIED CABLE (SEE NOTES)
BLACK T
(26)
-
N
RED R
(1)
WHITE Tl (27)
_r
GREEN Rl
(2)
\/
TRANSMIT
RDTU PCB
RECEIVE
L- RDTU AMPHENOL
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.
. NDTU cable is supplied with RDTU PCB (30 ft maximum).
l
Set RDTlJ SW1 switch for proper loop length per TVDS- I section.
. Customer supplied span cables must be 22 A WG, 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 7-28
RDTU Cable Connections
January 1996
7-33