Paradyne 317x E1 manual Rear Panel Connectors and Switches, Name Function

Introduction

		Table 1-1
	Rear Panel Connectors and Switches
Name		Function
POWER		Supplies power to the E1 DSU/CSU by providing an attachment for the ac power
		module or the optional dc power cable (+24 or ±48 Vdc).
AUX PORT		Supports SNMP LAN Adapter or daisy-chain connections.
COM PORT		Provides access to a locally connected PC, an ASCII terminal or printer, or an
		SNMP management link.
DTE		Provides access to the DTE Drop/Insert interface. This interface is compatible
		with the signal format of CCITT Recommendation G.703 and the frame structure
		of CCITT Recommendation G.704.
NETWORKÐ120 Ω		Provides an unkeyed modular jack for a 120 ohm balanced network interface.
NETWORKÐ75 Ω TX/RX		Provides two BNC connectors (Transmit and Receive) for a 75 ohm unbalanced
		network interface.
NETWORKÐ120 Ω/75Ω (switch)
		Selects either a 120 ohm balanced network interface or a 75 ohm unbalanced
		network interface.
NETWORKÐRX SHIELD (switch)		Selects either an ªopenº or ªearthº shield connection for the 75 ohm RX interface.
		(This switch must be set to ªopenº when using the 120 ohm interface.)
CLOCK IN		Used to attach an external clock to the E1 DSU/CSU.
PORTs 1± 4		Used to connect the customer's synchronous data DTE to the E1 DSU/CSU.

3170-A2-GB20-20 December 1996 1-5