Paradyne Connecting Cables to the Model 3910 Modems, Model 3910 Rear Panel and Power Supply

Modem Installation

The rear panel of the Model 3910 modem (Figure 2-1) has the following switches and connectors:

•An ON/OFF power switch.

•An 8-pin DIN type power receptacle (PWR) for the dc power supply.

•An 8-pin modular keyed jack (LEASED) for 4-wire/2-wire leased lines.

•An 8-pin modular keyed jack (DIAL) for backup lines (2-wire dial or 2-wire leased).

•A 4-pin modular jack for the (NMS) network management system connection.

•A 25-pin DB-25-S receptacle for the DTE interface.

Connecting Cables to the Model 3910 Modems

Figure 2-1 shows how Model 3910 modems are connected to certain TELCO jack types using the appropriate cables. For pin assignments, refer to Appendix C.

	DTE 2	DTE 3		DTE 4
LEASED	DIAL	DTE 1	NMS	PWR	ON OFF

8-POSITION,
8-CONDUCTOR
PLUG FOR	DB-25-P
LEASED-LINE
	CONNECTOR
NETWORK
	FOR DATA
OPERATION
	TERMINAL
	EQUIPMENT
	OPERATION

6-POSITION,	SUB-MINIATURE,
4-CONDUCTOR
PLUG FOR	4-CONDUCTOR
PERMISSIVE	PLUG FOR
DIAL NETWORK	NETWORK
OPERATION	MANAGEMENT
	OPERATION

POWER

SUPPLY

NOTE:

THE DIAL JACK IS ALSO USED

FOR 2-WIRE LEASED BACKUP.

Figure 2-1. Model 3910 Rear Panel and Power Supply

3910-A2-GN32-30 November 1996 2-3