Connectors and cables

The rear I/O transition board associated with the TX 4000C board has a T1/E1 trunk connector and up to two Ethernet interfaces on the end bracket:

Dialogic® MD1 RJ-21 interface

The TX 4000C board uses a Dialogic® MD1 RJ-21 interface to connect the board to the network. The following table provides the Dialogic® MD1 RJ-21 interface pin assignments:

Trunk

Transmit to network pin assignments

Receive from network pin assignments

Ring

Tip

Ring

Tip

1 and 9

1

26

2

27

2 and 10

3

28

4

29

3 and 11

5

30

6

31

4 and 12

7

32

8

33

5 and 13

9

34

10

35

6 and 14

11

36

12

37

7 and 15

13

38

14

39

8 and 16

15

40

16

41

Not used

17 through 25

42 through 50


For more information about trunk connections, refer to the Dialogic® NaturalAccess™ Signaling Software Configuration Manual.

Ethernet interface

The TX 4000C board has two 10/100Base-T Ethernet interfaces that are located on the rear I/O transition board. These interfaces provide Ethernet connections that support auto-negotiation for 100Base-T full duplex/half duplex and 10Base-T full duplex/half duplex transmission. They also provide a high-speed interface for connecting a TX 4000C board to either its redundant mate board or to a network of other SIGTRAN devices. Refer to Connecting TX boards for redundancy for more information.

The following illustration shows the pinouts of the RJ-45 Ethernet interface: