AT&T 2400 - Manual (Page 50)

4-8 Issue 2 December 1995
Hardware Installation
Connect the Null Cable and the
Y-Cable to the SID
The AT&T installation technician, the customer, or the customer’s switch
technician must complete this task.
The NEAX 2400 switch communicates with the SID through a Message Center
Interface (MCI) link. To connect the SID to the MCI digital port, you must connect
a Null cable and a Y-cable to the SID. Use the following instructions to connect
the cables to the SID.
1. Connect one end of the Null cable to the 25-pin Link B on the SID, shown
in Figure 4-3.
2. Connect Port 0 of the Y-cable to the free end of the Null cable.
NOTE :
Port 1 on the Y-cable is not used for any connections with this
integration.
Proceed to the next section.
Figure 4-3. Back View of the SID
25 Pin 25 Pin
(Fan Outlet)
Link A Link B
Diag Net B Net A Line B Line A Modem
115-230V AC
50/60 Hz
Power
Cord
Outlet
(Male)
Power
Switch