Multi Tech Equipment MTA128ST manual Interlace, Pin TE Signal

Introduction and Description

If your ISDN product operates with a S/T outlet interface, you need an NT1 device to connect to the ISDN switch. MTA128ST adapters need an NT1 device to connect to the ISDN switch, but the MTA128NT adapter does not require NT1 device. In the UK, and in many European countries, NT1 device is supplied by your telephone company.

Figure 2-1 ISDN Interface Points

S/T Interlace

The S/T interface uses an 8-conductor modular cable terminated with an 8-pin RJ-45 plug. An 8-pin RJ45 jack located on the terminal is used to connect the terminal to the DSL (Digital Subscriber Loops) using this modular cable.

Table 2-1 shows the Pin Number, Terminal Pin Signal Name and SILC Pin Signal name for the S/T interface

Pin TE Signal

1Not used

2Not used

3Tx+

4Rx-

5Rx+

6Tx-

7Not used

8Not used

U Interlace

The U interface uses a 2-conductor twisted pair cable terminated with an RJ-45 jack. An RJ-45 jack located on the terminal is used to connect the terminal to the Digital Subscriber Loops using this twisted pair cable.

In Table 2-2 the Pin Number, Terminal Pin Signal Name and UILC Pin Signal Names for the U interface are listed.

Pin

1N/A

2N/A

3N/A

4Positive Input

5Negative Input

6N/A

7N/A

8N/A

6