Reference Guide for the Model XM128 ISDN Digital Modem

Table E-1 lists the pin assignments for the RJ-45 plug and RJ-45 connector for the S/T interface.

Table E-1.

RJ-45 plug and RJ-45 connector pin assignments for the S/T interface

 

 

 

 

Pin

 

Assignment

 

 

 

 

 

1

 

Not connected

 

 

 

 

 

2

 

Not connected

 

 

 

 

 

3

 

RCV +

 

 

 

 

 

4

 

XMT +

 

 

 

 

 

5

 

XMT -

 

 

 

 

 

6

 

RCV -

 

 

 

 

 

7

 

- 48V

 

 

 

 

 

8

 

- 48V RTN

 

 

 

 

 

Table E-2 lists the pin assignments for the RJ-45 plug and RJ-45 connector for the U interface.

Table E-2.

RJ-45 plug and RJ-45 connector pin assignments for the U interface

 

 

 

 

Pin

 

Assignment

 

 

 

 

 

1

 

Not connected

 

 

 

 

 

2

 

Not connected

 

 

 

 

 

3

 

Not connected

 

 

 

 

 

4

 

Ring

 

 

 

 

 

5

 

Tip

 

 

 

 

 

6

 

Not connected

 

 

 

 

 

7

 

- 48V

 

 

 

 

 

8

 

- 48V RTN

 

 

 

 

 

E-2

Connector Pin Assignments

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Image 140
NETGEAR XM128 ISDN manual Pin Assignment, Rcv + Xmt +