Dsx-1 Port Dte Interface - Paradyne Compshere 3000 Series Installation Manual

COMSPHERE 3000 Series Carrier

DSX-1 Port DTE Interface

The DSX-1 cable is typically supplied by a DTE
vendor (see Figure B-3) and is a:
22 AWG solid, individually shielded twisted pair
cable with drain wire.
DB15 plug. Be sure to connect the shield ground
only at the T1 DSU/CSU end as shown to prevent
ground loops.
The DTE (DSX-1) interface connector is a DB15-type
socket connector (see Table B-3). Refer to the
ACCULINK 315x Channel Service Unit Operator's Guide
or the ACCULINK 3160, 3161, 3164, and 3165 DSU/CSU
Operator's Guide for more information.
Twisted Pair
To
DTE
Twisted Pair
External
Relay
Contact
Figure B-3. DTE (DSX-1) Cable
B-4
DB15
Plug
Receive Tip
1
Receive Ring
9
Shield Ground
2
Transmit Tip
3
Transmit Ring
11
Shield Ground
4
Return
12
Sense
14
496-14152-03
July 1999
Table B-3
DTE (DSX-1) Interface Connector (J3)
Signal
Receiver Tip from DTE
Receiver Ring from DTE
Transmitter Tip to DTE
Transmitter Ring to DTE
Relay Contact Sense Return
Relay Contact Sense
Shield Ground
Connecting to the DTE
To connect the DTE to the modem, you can use two
DB25 to 8-position modular adapters and an 8-pin
RJ45-type modular cable instead of an RS-232 cable with
DB25 connectors. Because of the large number of cables
required for typical 24-port installations, the slimmer
modular cable is recommended.
The connectors on the DTE interface assembly are
labeled, from top to bottom: A, B, and C. These markings
show which modem on a card is associated with each
connector.
Connect the DB25 adapter or the connector on an
RS-232 DTE cable to one of the DB25 connectors
on the DTE interface assembly. Use a small
screwdriver to fasten the connector to the backplate.
Connect the DB25 adapter or connector on the
cable to the DB25 connector on the DTE. Use a
small screwdriver to fasten the cable to the DTE.
Pin #
1
9
3
11
12
14
2, 4
3000-A2-GA31-D0