T3 Interface (Optional) - Nortel Contivity 4500 Getting Started

Getting Started with the Contivity Extranet Switch 4500

T3 Interface (Optional)

The Single T3 WAN connection is located on a PCI card which has a 50-pin SCSI
II female connector that provides the signals needed to interface to a T3 modem or
Modem Eliminator. Included in the accessory box is a cable, which maps the T3
signals out to a 50-pin SCSI II male connector. Figure 2-4 shows a T3 interface.
Figure 2-4.
Table 2-4 shows the cable pinouts.
Table 2-4.
J1
10
11
12
13
19
24
25
26
2-10
T3 Interface
T3 Cable Pinouts
Signal
1 GND
2 RCB
3 CAB
4 RDB
5 LCB
6 STB
7 GND
8 TAB
9 TTB
LAB
TDB
LBB
GND
GND
TESTB
GND
GND
J2
1
2
3
4
5
6
7
8
9
10
11
12
13
19
24
25
26