Enterasys Networks CSX6000 - Manual (Page 81)

Central Site Remote Access Switch 81
O RDERING ISDN S ERVICE (US O NLY )
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.
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.
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.)
RJ-45
Adapter
4 Wire
CSU
Local or
InterExchange Carrier
T1 Line
US Only
CSX5500
RJ-45
Pinout
Adapter
RJ-45
Pinout
Primary Rate Adapter
RJ-45 Jack
1
2
3
4
5
6
7
8
Primary Rate Board
1
2
3
4
5
6
7
8
TX+
RX+
RX-
TX-
RX+
RX-
TX+
TX-