Cabling Examples - Paradyne 3172 Operator's Manual

ACCULINK 317x E1 DSU/CSU

Cabling Examples

The E1 DSU/CSU is supplied with an ac power
module. You must provide the DTE and network cables.
Optional cables that you can order from AT&T
Paradyne are described in Appendix D, Pin Assignments.
Figure 2-13 illustrates some cabling examples.
CAUTION
Disconnect the power cable
before connecting or removing
any data cables at the rear of
the unit.
COM PORT NETWORK
AUX COM
POWER PORT PORT
DTE
CAUTION: AUX PORT OR COM PORT MUST NOT BE
CONNECTED TO PSTN OR E1 NETWORK
CLOCK IN PORT 1
SERIAL
PORT
TO AC
POWER
MODULE
NOTE:
3100 SERIES
FRONT PANEL
EMULATION
SOFTWARE,
3100-C1-010
2-8
NETWORK
TX RX
RX SHIELD
120 OPEN
DSU/CSU
75 EARTH
120 75 75
PORT 2
NETWORK
(OPTIONAL)
SNMP
MANAGER
Figure 2-13. Cabling Examples
March 1996
The 120 / 75 switch selects
either the 120 ohm balanced
network interface or the 75 ohm
unbalanced network interface.
The RX SHIELD switch selects
either an "open" or "earth" shield
connection for the 75 ohm RX
interface. (This switch must be set
to "open" when using the 120 ohm
interface.)
DSU/CSU
NETWORK
COM PORT
AUX
POWER PORT
CAUTION: AUX PORT OR COM PORT MUST NOT BE
CONNECTED TO PSTN OR E1 NETWORK
DSU/CSU
CLOCK IN
TO DC
POWER
3100-F1-520
OR
NOTE
FRONT
PANEL
NETWORK
COM NETWORK
PORT TX RX
RX SHIELD
DTE
120 OPEN
75 EARTH
120 75 75
PORT 3 PORT 4
PORT 1 PORT 2
495-14673-01
3170-A2-GB20-10