Connecting an external device to your machine; Connecting an external telephone; Connecting an external telephone answering device (TAD)- Page 182

Brother MFC-640CW User's Guide

2014 Dodge Charger SRT Owner Manual

Table of Contents

USER’S GUIDE MFC-640CW
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A - 9

   APPENDIX A

Connecting an external device to your 
machine

Connecting an external telephone

You can connect a separate telephone (or telephone answering 
device) directly to your machine as shown in the diagram below.

Connect the telephone line cord to the jack labeled EXT. in the left of 
the machine.

When you are using an external or an extension phone, the LCD 
shows 

Ext. Tel in Use

.

Connecting an external telephone answering 
device (TAD)

Sequence

You may choose to connect an additional answering device. 
However, when you have an 

external

 TAD on the same telephone 

line as the machine, the TAD answers all calls and the machine 
“listens” for fax calling (CNG) tones. If it hears them, the machine 
takes over the call and receives the fax. If it does not hear CNG 
tones, the machine lets the TAD continue playing your outgoing 
message so your caller can leave you a voice message.

Extension 
Telephone

External 
Telephone

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