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Set-Up Guide for ZoomSwitch™ Model ZMS20-UC

Unplug the cable that is currently 

connected to the left side or left 

underside of your telephone set (the 

other end will remain connected to 

your headset base or amplifier.)

Plug the cable you just pulled out in 

Step 1 and plug it into the into the 

accessory port (port B) of the Zoom 

Switch.

Take the black phone cable that comes 

with the Zoom Switch and plug the end 

labeled Port A into Port A of the Zoom 

Switch.

Plug the other side of the black phone 

cable (labelled phone) into your 

telephone.

Plug the included USB cable into the 

Zoom Switch USB port.

Plug the other end of the USB cable 

into your computer’s USB port.  

Once connected, the device will 

be installed as ‘ZoomSwitch USB 

Adapter’.

1

4

2

5

3

6

A

USB

Phone

(RJ9 Jack)

Accessory

(Headset/Handset)

A

B

Red 

for USB

Gre

en for Phon

e

USB

Phone

(RJ9 Jack)

Accessory

(Headset/Handset)

A

B

Red 

for USB

Gre

en for Phon

e

USB

Phone

(RJ9 Jack)

Accessory

(Headset/Handset)

A

B

Red 

for USB

Gre

en for Phon

e

USB

Phone

(RJ9 Jack)

Accessory

(Headset/Handset)

A

B

Red 

for USB

Gre

en for Phon

e

USB

Phone

(RJ9 Jack)

Accessory

(Headset/Handset)

A

B

Red 

for USB

Gre

en for Phon

e

USB

Phone

(RJ9 Jack)

Accessory

(Headset/Handset)

A

B

Red 

for USB

Gre

en for Phon

e

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