Enterasys Networks CSX5500, CSX6000, CSX7000 manual US Only

ORDERING ISDN SERVICE (US ONLY)

Ordering BRI ISDN Lines using Provisioning Settings

is ordered, the customer may be asked for the FCC registration number for the type of CSU that is being used. The CSU should support ESF framing and B8ZS line encoding.

RJ-45			Local or
		InterExchange Carrier
Adapter
	4 Wire

CSX5500

T1 Line

US Only

CSU

The cabling between the CSU and the CyberSWITCH is very important, and is also where most problems occur. The system’s PRI RJ-45 adapter uses the international standard of pins 3, 4, 5, and 6 for transmit and receive. Most T1 lines in the United States use the traditional 1, 2, 4, and 5 pins. We provide an RJ-45 to RJ-45 Adapter that will convert between the two wiring systems. The customer may still need a special cable to connect from a RJ-45 jack to a DB-15 connector, if that is what the CSU provides.

Primary Rate Board

Primary Rate Adapter

RJ-45 Jack

		Adapter
RJ-45		RJ-45
Pinout		Pinout
	1	1	RX+
	2	2	RX-
TX+ 3		3	TX+
RX+ 4		4
RX-	5	5	TX-
TX-	6	6
	7	7
	8	8

Otherwise, a standard 4 or 8 wire cable with RJ-45 jacks is sufficient between the Adapter and the CSU.

When the line is installed, the customer must ask the phone company the following questions:

1.What are the phone numbers for the line? (There may be more than one.)

2.Do I need to use any prefix when I dial? (For example, “9” for a Centrex line.)

Central Site Remote Access Switch 81