Mode Dip Switch Settings U301

S301 controls the operating mode for System B and S302 controls the operating mode for System A.

Settings are summarized as follows:

TABLE 3. Mode DIP Switch Settings for Programmed Chip P/N 90157640500 (version 1.0)

 

Switch Settings

 

Description

 

 

 

 

1

2

3

4

 

 

 

 

 

 

Open

Open

Open

Open

Configuration 1, Full-Duplex Mode (Default)

 

 

 

 

 

Closed

Open

Open

Open

Configuration 2, Half-Duplex Mode

 

 

 

 

 

Open

Open

Open

Closed

Configuration 3, Tone Test Mode

 

 

 

 

 

Full-Duplex Definition: Both sides of the line can talk simultaneously.

Half-Duplex Definition: Only one side of the line can talk at a time and the other side must wait until the first side is done talking before responding. 4-wire systems have priority over 2-wire system in Half- duplex mode.

Tone Test Mode:Disables internal suppression of tones.

TABLE 4. Mode DIP Switch Settings for Programmed Chip P/N 90157640500 (version 1.1)

 

 

Switch Settings

 

Description

 

 

 

 

 

 

 

1

2

 

3

4

 

 

 

 

 

 

 

 

 

 

 

Open

Open

 

Open

Open

Configuration 1, Full-Duplex Mode (Default)

 

 

 

 

 

 

 

 

Closed

Open

 

Open

Open

Configuration 2, Half-Duplex Mode

 

 

 

 

 

 

 

 

Open

Open

 

Open

Closed

Configuration 3, Full-Duplex Mode, Noise Suppression Disabled

 

 

 

 

 

 

Full-Duplex Definition:

Both sides of the line can talk simultaneously.

Half-Duplex Definition:

Only one side of the line can talk at a time and the other side must wait until the first side is

 

 

 

 

 

done talking before responding. 4-wire systems have priority over 2-wire system in Half-

 

 

 

 

 

duplex mode.

Noise Suppression:

 

The unit suppresses background noise in absence of speech. Configuration 3 disables this

 

 

 

 

 

suppression.

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RTS DSI 2008 Mode Dip Switch Settings U301, Switch Settings Description, Full-Duplex Definition, Half-Duplex Definition