WAN Connector and Cables 171

Figure 25 shows the pin assignments of the ISDN S/T cable.

Figure 25 ISDN S/T Cable

To WAN port

To wall outlet or NT1

1 2 3 4 5 6 7 8

 

1 2 3 4 5 6 7 8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RJ-45 male (shielded)

RJ-45 male (shielded)

 

 

Name Abbr. Pin

Pin Abbr. Name

Not connected

NC

Not connected

NC

Transmit Data+

TxD+

Receive Data+

RxD+

Receive Data-

RxD-

Transmit Data-

TxD-

Not connected

NC

Not connected

NC

1

2

3

4

5

6

7

8

1

NC

Not connected

2

NC

Not connected

3TxD+ Transmit Data+

4RxD+ Receive Data+

5RxD- Receive Data-

6TxD- Transmit Data-

7

NC

Not connected

8

NC

Not connected

Page 171
Image 171
3Com NETBuilder SI, SuperStack II manual Shows the pin assignments of the Isdn S/T cable