Audio Connections for the Other 4-wire Communications Systems

1.Construct 9-pin or RJ-11 cables to connect from the 4-wire system to the DSI 2008. To connect to the System A hybrid, use either J2A or J3A; for the System B hybrid, use either J2B or J3B. Pin connections are as follows:

9-Pin Connection

Connector Type: 9-pin male D-subminiature

Pin 1

No connection

Pin 2

No connection

Pin 3

No connection

Pin 4

Balanced Audio + 4-wire output

Pin 5

Balanced Audio - 4-wire output

Pin 6

No connection

Pin 7

Balanced Audio - 4-wire input

Pin 8

Balanced Audio + 4-wire input

Pin 9

No connection

RJ-11 Connection

Connector Type: RJ-11 plug

Pin 1

No connection

Pin 2

Balanced Audio + 4-wire input

Pin 3

Balanced Audio + 4-wire output

Pin 4

Balanced Audio - 4-wire output

Pin 5

Balanced Audio - 4-wire input

Pin 6

No Connection

2.On the DSI 2008 front panel, set the 4W LEVEL REF SEL switches to the position which most closely matches the audio input and output levels of your 4-wire system. If you don’t know the levels, select the +8 dB position for now.

6

Page 10
Image 10
RTS DSI 2008 manual Pin Connection Connector Type 9-pin male D-subminiature, RJ-11 Connection Connector Type RJ-11 plug