Radio Shack Switch AFX 300 User Guide

43-1245.fm Page 1 Wednesday, August 18, 1999 9:51 AM  
Cat. No. 43-1245  
OWNER’S MANUAL  
Please read before using this equipment.  
AFX-300  
Deluxe Automatic  
Fax/Data Switch  
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This fax/data switch has been tested and found to comply with  
applicable UL and FCC standards.  
Warning: To prevent fire or shock hazard, do not expose this  
product to rain or moisture.  
CAUTION  
RISK OF ELECTRIC SHOCK.  
!
DO NOT OPEN.  
: TO REDUCE THE RISK OF  
CAUTION  
ELECTRIC SHOCK, DO NOT REMOVE  
COVER OR BACK. NO USER-SERVICE-  
ABLE PARTS INSIDE. REFER SERVIC-  
ING TO QUALIFIED PERSONNEL.  
This symbol is intended to alert you to the presence of un-  
insulated dangerous voltage within the product’s enclo-  
sure that might be of sufficient magnitude to constitute a  
risk of electric shock. Do not open the product’s case.  
This symbol is intended to inform you that important op-  
erating and maintenance instructions are included in the  
literature accompanying this product.  
!
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READ THIS BEFORE INSTALLING  
Each device that you connect to the phone line draws power  
from the phone line. We refer to this power draw as the de-  
vice’s ringer equivalence number, or REN. The REN is shown  
on the bottom of your AFX-300.  
If you are using more than one device on the line, add up all  
the RENs. If the total is more than five, your phone might not  
ring and your answering machine might not answer. In rural  
areas, a total REN of three might impair ringer operation. If  
ringer operation is impaired, remove a device from the line.  
Your AFX-300 complies with Part 68 of FCC Rules. You must,  
upon request, provide the FCC registration number and the  
REN to your phone company. Both numbers are shown on the  
bottom of your AFX-300.  
You must not connect your AFX-300 to:  
• Coin-operated systems  
• Party-line systems  
• Most electronic key phone systems  
The AFX-300 is not compatible with:  
• Voice mail services  
• Call forwarding services  
• Call waiting services  
• Fax machines or modems that have a REN greater than  
2.0B.  
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CONTENTS  
Installation ......................................................................... 7  
Installing Back-Up Batteries .......................................... 7  
Making the Connections ................................................ 9  
Initializing the AFX-300/Connecting to Power ............. 13  
Preparing a TAD for Use with the AFX-300 ................. 15  
Setting the TAD’s Ring Number ............................. 15  
Changing the Outgoing Message .......................... 15  
Optional Voice Data Guard .......................................... 17  
Operation ......................................................................... 18  
Using a TAD with the AFX-300 .................................... 19  
TAD Operation with a Fax Machine/Fax Modem ... 20  
TAD Operation with a Fax Machine/Fax Modem  
and a Data Modem ................................................ 21  
Answering Calls in Person .......................................... 22  
Letting the AFX-300 Answer Calls .............................. 23  
Switching Fax Calls Manually ...................................... 24  
Using a Touch-Tone Phone ................................... 24  
Using a Rotary (Pulse) Phone ............................... 25  
Special Features .............................................................. 26  
Programming Quick Start ............................................ 27  
Programming from an Extension Phone ................ 27  
Programming from a Remote Phone ..................... 27  
Quick Start Command Chart ................................. 28  
Basic Programming Steps ........................................... 30  
Programming from an Extension Phone ................ 31  
Programming from a Remote Phone ..................... 32  
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Program Command Descriptions ................................ 33  
Changing the Access Code ................................... 34  
Changing the Ring Number Setting ....................... 35  
First Number Distinctive Ring ................................ 35  
Second Number Distinctive Ring ........................... 36  
Turn On/Off the FAX and MODEM Jacks .............. 36  
Turn On/Off the TAD Jack ...................................... 37  
Turn On/Off the Fax Password .............................. 38  
Route Data Modem Calls to the FAX Jack ............ 39  
Automatic Modem Detection (AMD) ...................... 39  
Questions and Answers ................................................. 40  
Care and Maintenance .................................................... 43  
If You Have Problems .................................................. 44  
The FCC Wants You to Know ...................................... 45  
Lightning ...................................................................... 45  
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INSTALLATION  
Caution  
: Be sure to perform the procedures in this section in  
this order, otherwise the AFX-300 might not operate as ex-  
pected:  
1. Install batteries  
2. Connect to the phone line  
3. Connect your TAD, fax machine/fax modem, and/or data  
modem  
4. Initialize the AFX-300 and connect it to AC power  
Note  
: If the AFX-300’s operation becomes erratic, disconnect  
it from AC power, unplug all modular connections, remove the  
backup batteries, then follow all installation procedures in the  
order they appear (beginning with “Installing Back-Up Batter-  
ies”).  
INSTALLING BACK-UP BATTERIES  
Your AFX-300 requires two button-cell batteries (supplied) for  
memory backup in case AC power is disconnected or fails.  
1
2
OPEN  
BATTERY-2X LR 44 TYPE  
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Follow these steps to install the batteries.  
1. Remove the battery compartment screw with a small  
Phillips screwdriver, then remove the cover by sliding it in  
the direction of the arrow.  
2. Insert the batteries into the compartment with the posi-  
tive (+) sides facing up. The POWER/IN USE indicator  
turns on.  
3. Replace the cover, then reinsert and tighten the screw.  
Notes:  
• The AFX-300’s POWER/IN USE indicator flashes slowly  
during normal use. If it flashes rapidly, replace the batter-  
ies. For the longest life, we recommend alkaline batter-  
ies, such as Radio Shack Cat. No. 23-115.  
Warning: Promptly dispose of old batteries and keep  
them out of reach of young children. Swallowing a button  
cell battery can be fatal.  
• Before you replace the back-up batteries, you must dis-  
connect the AFX-300 from AC power and unplug all  
modular phone cords.  
• Disconnecting AC power while the batteries are removed  
resets the AFX-300’s features to their default settings  
(see “Special Features” on Page 26).  
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MAKING THE CONNECTIONS  
Follow these steps to connect the AFX-300 to the phone line  
and your answering machine (TAD), fax machine, fax modem,  
and/or data modem.  
1. Plug one end of the AFX-300’s modular cord into its LINE  
jack, and plug the other end into your modular telephone  
line jack.  
MODEM  
FAX  
LINE  
TAD  
DC 12V  
Notes  
:
If your telephone line does not have a modular jack,  
you must update the wiring. You can convert the wir-  
ing yourself, using jacks and adapters available at  
your local Radio Shack store, or you can have the  
telephone company update the wiring for you. The  
telephone company will charge you for the installation  
of the necessary jacks. The USOC number of the jack  
to be installed is RJ11C (or RJ11W for a wall plate  
jack).  
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If you have two phone lines and you want to connect  
the AFX-300 to the second line, you must install a tri-  
plex modular adapter, such as Radio Shack Cat. No.  
279-469, and connect the AFX-300 to L2. Follow the  
installation instructions provided with the adapter.  
You can mount the AFX-300 on a standard modular  
wall plate or directly on a wall using two screws (not  
supplied), then connect the AFX-300 to the telephone  
line using a short modular cord (not supplied).  
RESET  
Mounting Directly on a Wall  
Mounting on a Wall Plate  
2. To connect a fax machine, fax modem, or fax/data  
modem, plug its modular plug into the AFX-300’s FAX  
jack.  
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MODEM  
FAX  
LINE  
TAD  
DC 12V  
Notes:  
If you connected a fax/data modem (one that receives  
both fax and data calls), be sure to set the AFX-300 to  
route data modem calls to the FAX jack (see “Special  
Features” on Page 26).  
To ensure optimum compatibility with the AFX-300  
and avoid disconnected fax calls due to lengthy con-  
nection time:  
Set the connected fax machine/fax modem’s ring  
number feature to its minimum setting (typically 1  
ring).  
If the connected fax machine/fax modem has a  
delayed ring (or answer) feature, turn it off or set  
it to the minimum delay setting.  
3. To connect a TAD to the AFX-300, plug the TAD’s modu-  
lar plug into the AFX-300’s TAD jack. Also, see “Prepar-  
ing a TAD for Use with the AFX-300” on Page 15.  
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MODEM  
LINE  
TAD  
FAX  
DC 12V  
Notes:  
If you connect a TAD to the AFX-300, you can connect  
your telephone to the phone jack on the TAD.  
If you do not connect a TAD to the AFX-300’s TAD  
jack, you can connect your telephone’s modular plug  
directly to this jack.  
If you installed a triplex adapter, plug your TAD’s or  
telephone’s modular cord into the adapter’s L1/L2  
jack.  
4. To connect a data modem to the AFX-300, plug the  
modem’s modular plug into the AFX-300’s MODEM jack.  
Note: If you connected both a TAD and a data modem to  
the AFX-300, and do not subscribe to second number  
distinctive ring service from your telephone company, be  
sure to turn on the automatic modem detection feature  
(see “Special Features” on Page 26). Otherwise, the  
AFX-300 will not switch data modem calls properly.  
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INITIALIZING THE AFX-300/  
CONNECTING TO POWER  
Follow these steps to initialize the AFX-300 and connect it to  
AC power.  
Cautions  
:
• Be sure you install the batteries then connect all of the  
modular jacks before you connect the AFX-300 to power.  
You must follow all of these steps, in order, to initialize  
your AFX-300; otherwise, it might not detect when the  
batteries are low.  
1
AC  
ADAPTER  
MODEM  
LINE  
TAD  
FAX  
DC 12V  
2
1. Plug the supplied adapter’s barrel plug into the AFX-  
300’s DC 12V jack.  
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2. Plug the adapter’s other end into a standard 120-volt AC  
power outlet.  
Caution: You must use a Class II, 120V AC/12V DC  
adapter that delivers at least 400 milliamps. Its center tip  
must be set to negative and its plug must correctly fit the  
AFX-300’s DC 12V jack. The supplied adapter meets  
these requirements. Using an adapter that does not meet  
these requirements could damage the AFX-300 or the  
adapter.  
3. Wait about 10 seconds, then unplug the adapter’s barrel  
plug from the AFX-300’s DC 12V jack.  
4. Wait another 10 seconds, then reconnect the adapter’s  
barrel plug to the AFX-300’s DC 12V jack.  
5. Route the AC adapter cord through the AFX-300’s strain  
relief slot.  
AC  
ADAPTER  
OPEN  
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PREPARING A TAD FOR USE WITH  
THE AFX-300  
Setting the TAD’s Ring Number  
The AFX-300 is preset to direct a call to either the FAX or MO-  
DEM jack after five rings. When you use a TAD with the AFX-  
300, be sure the TAD is set to answer within four rings. If it is  
not, either change the ring number on the TAD to 4, or change  
the ring number on the AFX-300 to at least one number higher  
than the TAD’s ring number (see “Special Features” on  
Page 26).  
Changing the Outgoing Message  
Some fax machines/fax modems do not sound the tones re-  
quired to make the AFX-300 automatically switch the call and  
start your fax machine/fax modem (see “Switching Fax Calls  
Manually” on Page 24). If you connected a TAD to the AFX-  
300, we recommend you change the TAD’s outgoing message  
to include instructions for callers with that type of fax machine/  
fax modem, or for those callers who might want to both leave  
a voice message and send a fax during the call.  
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For example:  
“Hello. You have reached 555-4567. Please leave your name  
and phone number at the tone, and we will return your call. If  
you want to send us a fax and you have a touch-tone phone,  
press one, the pound sign, then one on your telephone to ac-  
tivate our fax machine, then press START on your fax machine.  
Thanks for calling.”  
If you also connected a data modem to the AFX-300, the mes-  
sage might say:  
“Hello. You have reached 555-4567. If you want to leave a  
message, press any digit on your touch-tone phone, then  
leave your name and phone number at the tone, and we will  
return your call. Or, if you want to send us a fax and you have  
a touch-tone phone, press one, the pound sign, then one on  
your telephone to activate our fax machine, then press START  
on your fax machine. Thanks for calling.”  
Note: If your TAD’s message interferes with the AFX-300’s  
operation (for example, calls are not routed properly, the TAD  
records calls intended for the fax machine/fax modem, etc.),  
re-record the message and speak more softly.  
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OPTIONAL VOICE DATA GUARD  
If an extension telephone on the same line as the AFX-300 is  
in use, the AFX-300 does not let your fax machine/fax modem  
or data modem access the telephone line or interrupt the call  
in progress.  
However, to prevent an extension telephone (one not plugged  
into the AFX-300) from interrupting a fax or data transmission  
that is in progress on the same line as the AFX-300, you must  
plug that extension phone into an optional voice data guard,  
such as Radio Shack Cat. No. 43-107.  
You can use a voice data guard for these situations:  
• When you use cordless telephones, extension tele-  
phones, speed dialers, computer modems, or other tele-  
phone devices on the same telephone line as your fax  
machine/fax modem.  
• When your answering machine is too far away to easily  
connect to the AFX-300’s TAD jack.  
To install a voice data guard, follow its supplied instructions.  
Note  
: You do not need to use a voice data guard with the AFX-  
300 if your TAD automatically stops the outgoing message  
when you pick up an extension phone on the same line as the  
TAD, and you connected the TAD to the AFX-300’s TAD jack.  
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OPERATION  
An incoming call on the phone line connected to the AFX-300  
can be answered in any of the following ways:  
If you connected an answering machine (TAD) to the  
AFX-300, you can let the TAD answer the call  
(see  
“Using a TAD with the AFX-300” on Page 19).  
You can answer the call in person  
by picking up any  
phone on the same line as the AFX-300 (see “Answering  
Calls in Person” on Page 22).  
You can let the AFX-300 automatically answer the  
call  
(see “Letting the AFX-300 Answer Calls” on  
Page 23).  
Regardless of how a call is answered, if the call is from a fax  
machine, fax modem, or data modem, the AFX-300 automati-  
cally directs the call to the proper device. After the call ends,  
the AFX-300 automatically resets to answer the next call.  
Notes  
:
• The POWER/IN USE indicator flashes slowly when the  
AFX-300 is in use.  
• If you connected both a TAD and a data modem to the  
AFX-300, be sure to turn on the AFX-300’s automatic  
modem detection feature (see “Automatic Modem Detec-  
tion (AMD)” on Page 39).  
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• If you subscribe to first number distinctive ring service  
from your telephone company, the AFX-300 is preset to  
automatically transfer calls to your fax machine/fax  
modem, whether the call is a voice call or a call from a  
fax machine/fax modem or data modem (see “First Num-  
ber Distinctive Ring” on Page 35).  
• If you have two phone lines and subscribe to a call roll-  
over feature from your telephone company, a fax call  
might roll over to the other line (the line not connected to  
the AFX-300) when your fax line is busy. If this happens,  
the AFX-300 cannot direct that call to your fax machine/  
fax modem.  
• If a caller’s fax machine does not sound fax alert (CNG)  
tones (tones that indicate the incoming call is a fax call),  
the AFX-300 cannot automatically switch the call to your  
fax machine/fax modem, but you can switch it manually  
(see “Switching Fax Calls Manually” on Page 24).  
USING A TAD WITH THE AFX-300  
If you connected a TAD to the AFX-300, you can let the TAD  
answer calls. How the AFX-300 operates depends on whether  
you connected only a fax machine/fax modem, or connected  
a fax machine/fax modem and a data modem.  
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TAD Operation with a Fax Machine/Fax Modem  
When the TAD answers a call, the AFX-300 listens during the  
outgoing message for either fax alert tones or touch-tone com-  
mands.  
If the AFX-300 detects fax alert tones, it automatically dis-  
connects the TAD and directs the call to your fax machine/fax  
modem.  
If the AFX-300 detects a preset sequence of touch-tone  
commands, it either switches the call directly to your fax ma-  
chine/fax modem or data modem, or is set to accept further  
commands (see “Switching Fax Calls Manually” on Page 24  
and “Special Features” on Page 26).  
If the call is a voice call, the TAD records the caller’s mes-  
sage as usual.  
Notes:  
• If the touch-tone sequence detected by the AFX-300  
does not match one of its preset sequences, the TAD  
simply records the touch-tone sounds.  
• If no fax alert or touch-tones are detected and the caller  
is silent, the TAD records the silence and/or hangs up.  
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TAD Operation with a Fax Machine/Fax Modem  
and a Data Modem  
When the TAD answers a call, the AFX-300 listens during the  
first 20 seconds of the outgoing message for either fax alert  
tones or touch-tone commands.  
If the AFX-300 detects fax alert tones, it automatically dis-  
connects the TAD and directs the call to your fax machine/fax  
modem.  
If the AFX-300 detects a preset sequence of touch-tone  
commands, it either switches the call directly to your fax ma-  
chine/fax modem or data modem, or is set to accept further  
commands (see “Switching Fax Calls Manually” on Page 24  
and “Special Features” on Page 26).  
If the call is a voice call, the caller must enter a touch-tone  
command within 20 seconds after the TAD answers to have  
the call directed to the TAD so it can record the caller’s mes-  
sage as usual.  
If no fax alert or touch-tones are detected within 20 sec-  
onds after the TAD answers, the AFX-300 automatically  
switches the call to your data modem.  
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ANSWERING CALLS IN PERSON  
You can answer a call in person by simply picking up any  
phone on the line (including one connected to the PHONE jack  
on your TAD) before the TAD or AFX-300 answers the call.  
Note  
: Because the AFX-300 automatically disables your fax  
machine when a call is received, you cannot use its built-in  
telephone (if any) to answer a call in person.  
If you answer a call and the call is a voice call  
, talk as usu-  
al.  
Note  
: If you connected a TAD and a data modem to the AFX-  
300, and you answered the call on a phone connected to the  
TAD, you must press any touch-tone digit on the phone before  
you begin the conversation. If you do not, the AFX-300 auto-  
matically transfers the call to your data modem after 20 sec-  
onds.  
If you answer the call and hear fax alert tones  
, simply hang  
up the phone. The AFX-300 directs the call to your fax ma-  
chine/fax modem, regardless of whether or not you hang up.  
If you answer the call and hear only silence  
, the call is prob-  
ably from another data modem (a calling modem is silent until  
prompted by your modem). To transfer the call to a connected  
data modem, press 1, #, 2, listen for the modem’s signals,  
then hang up the phone.  
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LETTING THE AFX-300 ANSWER  
CALLS  
If you did not connect a TAD, or if you turned off the connected  
TAD or the AFX-300’s TAD jack (see “Special Features” on  
Page 26), and you do not answer the call in person, the AFX-  
300 automatically answers the call after the preset number of  
rings.  
Note  
: The AFX-300 is preset to answer incoming calls after  
five rings. To change this setting, see “Special Features” on  
Page 26.  
If the AFX-300 detects fax alert tones or manual fax  
switching touch-tones within 5 seconds  
, it automatically di-  
rects the call to your fax machine or fax modem.  
If the AFX-300 detects a preset sequence of touch-tone  
commands within 5 seconds  
, it either switches the call di-  
rectly to your fax machine/fax modem or data modem, or is set  
to accept further commands (see “Switching Fax Calls Manu-  
ally” on Page 24 and “Special Features” on Page 26).  
If the AFX-300 does not detect fax alert tones or touch-  
tone commands within 5 seconds  
, it automatically switches  
the call to its MODEM jack, even if you did not connect a data  
modem.  
Note  
: If you did not connect a data modem, be sure to pro-  
gram the AFX-300 so it routes data modem calls to the FAX  
jack (see “Special Features” on Page 26). Otherwise, some  
fax calls might be disconnected.  
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SWITCHING FAX CALLS MANUALLY  
Using either a touch-tone or rotary (pulse) phone, you can  
manually set the AFX-300 to accept a transmission from a fax  
machine that does not sound a normal fax alert tone.  
Note  
: The following procedures apply only to incoming faxes.  
Using a Touch-Tone Phone  
During your conversation or when the answering machine an-  
swers a call, either you or the caller must press 1, #, then 1 on  
a touch-tone key pad to activate your fax machine/fax modem.  
After the code is entered, the sender of the fax must press his/  
her fax machine’s SEND button, then both parties must hang  
up their handsets.  
Notes  
:
• If either party presses a wrong key, wait about 10 sec-  
onds before trying again.  
You can use your phone’s  
and # keys for other func-  
tions, such as computer banking, but the AFX-300 acti-  
vates your fax machine/fax modem only when you press  
1, #, and 1 in that order.  
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Using a Rotary (Pulse) Phone  
If you are using a rotary (pulse) phone, you can activate your  
fax machine/fax modem during an incoming call using a phone  
on the same line as the AFX-300. Dial 3 on the extension tele-  
phone to direct the incoming call to your fax machine/fax mo-  
dem.  
Note: You can only direct the call using an extension phone  
on the same line. A caller cannot activate your fax machine/fax  
modem by dialing 3 on his/her phone.  
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SPECIAL FEATURES  
The AFX-300 has several special features that let you custom-  
ize its operation to fit your needs. By entering a preset access  
code from any touch-tone telephone — either from an exten-  
sion on the same line as the AFX-300, or after calling from a  
remote phone — you can do any of the following:  
Change the preset access code  
Change the AFX-300’s ring number setting  
Turn on/off first number distinctive ring  
Turn on/off second number distinctive ring  
FAX  
TAD  
MODEM  
jacks  
Turn on/off the  
Turn on/off the  
and  
jack  
Turn on/off the fax password feature  
FAX  
Route data modem calls to the  
jack  
Turn on/off automatic modem detection (AMD)  
For a quick-start list of programming instructions  
(experi-  
enced users only) and a summary of the AFX-300’s program-  
ming commands, see “Programming Quick Start” on Page 27.  
For detailed, step-by-step instructions  
on programming the  
AFX-300, see “Basic Programming Steps” on Page 30.  
For a complete description of a particular feature  
, see  
“Program Command Descriptions” on Page 33.  
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PROGRAMMING QUICK START  
This section provides a quick reference for experienced users  
to start programming the AFX-300. See the “Quick Start Com-  
mand Chart” on Page 28 for a list of all default settings and re-  
mote commands.  
Programming from an Extension Phone  
1. Pick up any phone on the same line as the AFX-300.  
2. Enter 1, , then your 2-digit access code (preset to 99).  
3. Enter a remote command.  
4. Hang up the phone.  
Note  
: To program another feature, repeat these steps.  
Programming from a Remote Phone  
1. Dial your phone number.  
2. After the TAD or fax switch answers, enter 1, , then  
your 2-digit access code (preset to 99).  
3. Enter a remote command within 10 seconds.  
4. Hang up the phone.  
Note  
: To program another feature, repeat these steps.  
27  
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Quick Start Command Chart  
Number of  
Times the  
AFX-300  
Beeps  
Default  
Setting  
You  
Press  
Command  
Change the  
99  
5
1, New  
Code  
2
Access Code  
(New code can be  
from 00-99)  
Change the Ring  
Number Setting  
(Ring number can  
be from 1-7)  
2, Ring  
Number  
2
First Number Dis-  
tinctive Ring  
On  
Off  
On  
3
4
5
2 = On  
3 = Off  
Second Number  
Distinctive Ring  
2 = On  
3 = Off  
Turn On/Off the  
FAX and MODEM  
Jacks  
2 = On  
3 = Off  
28  
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Number of  
Times the  
AFX-300  
Beeps  
Default  
Setting  
You  
Press  
Command  
Turn On/Off the  
TAD Jack  
On  
Off  
6
7
2 = On  
3 = Off  
Turn On/Off the  
Fax Password  
(The preset pass-  
word, if on, is  
2 = On  
3 = Off  
1 # 9 9  
)
Route Data  
Modem Calls to  
the FAX Jack  
Off  
8
9
2 = On  
3 = Off  
Turn On/Off Auto- Off  
matic Modem  
2 = On  
3 = Off  
Detection (AMD)  
29  
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BASIC PROGRAMMING STEPS  
The following sections provide you with the basic instructions  
for programming the AFX-300’s special features from a local  
(extension) or remote touch-tone phone.  
Notes  
:
You must correctly enter a 2-digit access code each time  
you program the AFX-300. The AFX-300’s access code  
is preset to 99. To change the code or reset the AFX-300  
to the default code, see “Changing the Access Code” on  
Page 34.  
You can only enter one program command per call from  
a remote phone or from an extension on the same line.  
• Do not set the AFX-300 so both its TAD and FAX jacks  
are turned off at the same time. If you do, you might not  
be able to turn on either one remotely. You must use a  
touch-tone phone on the same line as your AFX-300 to  
turn on either jack (see “Programming from an Extension  
Phone” on Page 27).  
• If you connected a programmable TAD to the same line  
as the AFX-300, the TAD might respond to programming  
commands intended for the AFX-300. If you are using an  
extension phone, disconnect or turn off the TAD during  
programming, then reconnect it when you finish. If you  
are using a remote phone, turn off the TAD jack before  
you program the other settings (see “Turn On/Off the  
TAD Jack” on Page 37).  
30  
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Programming from an Extension Phone  
Note: It is not unusual to hear beeping/buzzing or the opera-  
tor’s voice on the line as you program the AFX-300 from an ex-  
tension phone.  
1. Pick up any phone on the same line as the AFX-300,  
except the built-in phone (if any) on your fax machine.  
2. Press 1, , then the 2-digit access code. The AFX-300  
beeps once.  
Note: If you enter the access code incorrectly, simply try  
again.  
3. Enter a remote command by pressing  
then the num-  
ber(s) for the desired command. The AFX-300 beeps  
either two or three times, depending on the command  
you entered. See “Program Command Descriptions” on  
Page 33.  
Note: If you enter the programming command incor-  
rectly, simply try again.  
4. Hang up the phone.  
Note: To program another feature, repeat these steps.  
31  
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Programming from a Remote Phone  
1. Dial the phone number of the line connected to the AFX-  
300.  
2. Within 10 seconds after the TAD answers, or within 5  
seconds after the AFX-300 answers, press 1, , then the  
2-digit access code. The AFX-300 beeps once.  
Notes:  
If the AFX-300 answers, the phone stops ringing and  
you might not hear any other sound.  
If you enter the access code incorrectly or do not enter  
it in time, the AFX-300 automatically disconnects the  
call. If this happens, hang up and start over again from  
Step 1.  
3. Enter a remote command within 10 seconds by pressing  
then the number(s) for the desired command. The  
AFX-300 beeps either two or three times, depending on  
the command you entered. See “Program Command  
Descriptions” on Page 33.  
Note: If you enter the programming command incorrectly  
or do not enter it in time, the AFX-300 automatically dis-  
connects the call. If this happens, hang up and start over  
again from Step 1.  
4. Hang up the phone.  
Note: To program another feature, repeat these steps.  
32  
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PROGRAM COMMAND DESCRIPTIONS  
Each of the following sections describes a different AFX-300  
special feature and explains how to turn on, turn off, or change  
that feature when you follow the steps listed in “Basic Pro-  
gramming Instructions.” The beginning of each section in-  
cludes this basic information:  
Touch-Tone Command(s)  
— lists the specific touch-tone  
command sequence you enter to turn on, turn off, or change  
that feature while programming the AFX-300.  
AFX-300 Response  
— tells you how the AFX-300 responds  
when you correctly enter the appropriate touch-tone com-  
mand sequence.  
Default Setting  
— lists the default setting for that feature.  
Note  
: For all special features except “Changing the Access  
Code” and “Changing the Ring Number Setting,” the same  
touch-tone command is used to both turn on and turn off that  
feature. You can tell whether the feature is turned on or off by  
the AFX-300’s response (two or three beeps).  
33  
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Changing the Access Code  
Touch-Tone Command: 1, then any 2-digit number from  
00-99  
AFX-300 Response: 2 beeps  
Default Setting: 99  
For built-in security against accidental or unwanted changes  
to its settings, the AFX-300 requires you to enter a 2-digit ac-  
cess code each time you program it. The access code is pre-  
set to 99, but you can change the code to one you can easily  
remember.  
Note: If you change the access code then forget it, you can re-  
set the AFX-300 to accept the default access code of 99. To  
do this, insert a small, pointed object (such as a straightened  
paper clip) into RESET on the bottom of the AFX-300 and  
press it gently.  
O P E N  
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Changing the Ring Number Setting  
Touch-Tone Command:  
2, then any number from 1-7  
(rings)  
AFX-300 Response: 2 beeps  
Default Setting: 5 rings  
The AFX-300 is preset to answer incoming calls after 5 rings,  
but you can set it to answer after as few as 1 or as many as 7  
rings. This is especially useful if you connected a TAD to the  
AFX-300, or if you need time to get to the phone to answer  
calls in person.  
First Number Distinctive Ring  
Touch-Tone Command:  
3
AFX-300 Response: 2 beeps = On  
3 beeps = Off  
Default Setting: On  
If you subscribe to first number distinctive ring service through  
your phone company, the AFX-300 is preset to automatically  
switch calls to your fax machine/fax modem if it detects the  
first number’s distinctive ring pattern. If you subscribe to this  
service but do not want the AFX-300 to transfer that number’s  
calls to your fax machine/fax modem, you can turn this feature  
off.  
35  
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Second Number Distinctive Ring  
Touch-Tone Command:  
4
AFX-300 Response: 2 beeps = On  
3 beeps = Off  
Default Setting: Off  
If you subscribe to second number distinctive ring service  
through your phone company, the AFX-300 is preset to auto-  
matically switch calls to your data modem if it detects the sec-  
ond number’s distinctive ring pattern. If you subscribe to this  
service but do not want the AFX-300 to transfer that number’s  
calls to your data modem, you can turn this feature off.  
Turn On/Off the FAX and MODEM Jacks  
Touch-Tone Command:  
5
AFX-300 Response: 2 beeps = On  
3 beeps = Off  
Default Setting: On  
The AFX-300 is preset to automatically switch fax or data calls  
to your fax machine/fax modem or data modem, but it also lets  
you turn off the FAX and MODEM jacks (together). This is use-  
ful if you are expecting only voice calls, and want all calls to be  
routed to the AFX-300’s TAD jack.  
36  
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Turn On/Off the TAD Jack  
Touch-Tone Command:  
6
AFX-300 Response: 2 beeps = On  
3 beeps = Off  
Default Setting: On  
The AFX-300’s TAD jack is automatically turned on, so you  
can easily plug in a TAD and begin using the AFX-300. If the  
TAD you connected is also programmable (by touch-tones),  
the AFX-300 lets you turn off its TAD jack to prevent the con-  
nected TAD from answering calls (even though the TAD might  
be turned on and set to answer calls) or interfering with touch-  
tone commands meant for the AFX-300. You might also want  
to turn off the TAD jack if you did not connect a TAD.  
37  
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Turn On/Off the Fax Password  
Touch-Tone Command:  
7
AFX-300 Response: 2 beeps = On  
3 beeps = Off  
Default Setting: Off  
Preset Password (when turned on) = 1 # 9 9  
The AFX-300 is preset to automatically switch incoming fax  
calls to your fax machine/fax modem. For privacy or selective  
use, you can set the AFX-300 to require a preset password  
before it accepts fax calls.  
Notes:  
• If you turn on this feature, be sure to give the password  
to any callers from whom you want to receive faxes.  
• The caller must enter the fax password within 5 seconds  
after the AFX-300 answers or within 20 seconds after the  
TAD answers (if connected). Otherwise, the AFX-300  
automatically transfers the call to its MODEM jack, even if  
you did not connect a data modem.  
• The AFX-300’s fax password is preset to 1 # 9 9. You  
cannot change the password.  
38  
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Route Data Modem Calls to the FAX Jack  
Touch-Tone Command:  
8
AFX-300 Response: 2 beeps = On  
3 beeps = Off  
Default Setting: Off  
The AFX-300 is preset to route incoming data modem calls to  
its MODEM jack, but you can set it so both incoming fax and  
data modem calls are routed only to the FAX jack. This is es-  
pecially useful if you connected a combined fax/data modem  
to the AFX-300.  
Automatic Modem Detection (AMD)  
Touch-Tone Command:  
9
AFX-300 Response: 2 beeps = On  
3 beeps = Off  
Default Setting: Off  
If you connected both a TAD and a data modem to the AFX-  
300, you can turn on the AFX-300’s AMD feature so the AFX-  
300 can detect an incoming data modem call and automatical-  
ly switch the call to your data modem.  
39  
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QUESTIONS AND ANSWERS  
Here are some common questions and answers about how  
your AFX-300 operates.  
What is line sharing?  
Line sharing lets you use one telephone line for more than one  
purpose. For example, you can use one telephone line for reg-  
ular calls, fax or modem transmissions, or calls to your an-  
swering machine. Line sharing eliminates the need for  
additional phone lines.  
How does my AFX-300 know its a fax call?  
Unless you use the first number distinctive ringing feature, the  
fax machine must wait for you, the TAD, or the AFX-300 to an-  
swer the phone before it knows whether or not the call is a fax.  
1
When a fax machine calls, it repeatedly sounds a /2-second  
tone followed by a 3-second pause on the phone line (fax alert  
tone) until another fax machine responds. The AFX-300 lis-  
tens for these tones.  
How does my AFX-300 know its a data modem call?  
Unless you use the second number distinctive ringing feature,  
the data modem must wait for you, the TAD, or the AFX-300  
to answer the phone before it knows whether or not the call is  
a data modem. When a data modem calls, it makes no sounds  
at all until your data modem sends it a signal to begin the  
transmission. The AFX-300 listens for at least 20 seconds of  
silence (no fax alert tones or touch-tone commands), then au-  
tomatically transfers the call to your data modem.  
40  
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Can I share my residential line with my fax machine?  
Yes. You can install the AFX-300 at any available modular  
telephone jack on the telephone line. To prevent calls on other  
extensions in your home (or office) from interrupting your fax  
transmissions, we recommend you install a voice data guard  
(available at you local Radio Shack store) at each extension  
that shares the line with your fax machine.  
Can I use the AFX-300 on a two-line system?  
Yes. The AFX-300 will work on a 2-line system, if it is connect-  
ed to one of those lines.  
Can I still send faxes like I did before I installed the  
switch?  
Yes. Installing the switch does not affect outgoing fax opera-  
tion.  
Is there any special information I need to know about re-  
ceiving faxes from a fax machine that uses auto-dial?  
Yes. Auto-dialing fax machines must connect with the receiv-  
ing fax machine usually within about 35 seconds. Otherwise,  
the transmission ends. This means the combined number of  
rings between the TAD (or AFX-300) and your fax machine/fax  
modem should not exceed five rings. For safety’s sake, al-  
ways set your fax machine/fax modem to its lowest ring delay  
and/or ring number setting. Also, if you frequently receive fax  
calls from overseas, you must allow extra time for the call to  
connect (which means using an even lower number of com-  
bined rings).  
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Does the AFX-300 work with an answering machine that  
has a toll-saver feature?  
Yes, but auto-dialing fax machines must connect with the re-  
ceiving fax machine usually within about 35 seconds. Other-  
wise, the transmission ends. This means that if the toll-saver  
feature requires four rings, you must set the fax machine to re-  
spond in one ring.  
Does the AFX-300 work with the call-forwarding feature  
from my phone company?  
No. If you have forwarded your phone to another number, in-  
coming fax calls never reach your AFX-300 because the calls  
are switched at the telephone company’s central office.  
Does the AFX-300 work with the call-waiting feature from  
my phone company?  
Yes, but the call-waiting signal might distort an incoming or  
outgoing fax or data transmission. Some telephone systems  
let you temporarily turn off the call-waiting feature by dialing a  
special code. You might want to do that if you send or expect  
to receive an important fax call. Ask your telephone company  
if it offers this feature.  
42  
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CARE AND MAINTENANCE  
Your Radio Shack AFX-300 Deluxe Automatic Fax/Data  
Switch is an example of superior design and craftsmanship.  
The following suggestions will help you care for the AFX-300  
so you can enjoy it for years.  
• Keep the AFX-300 dry. If it gets wet, wipe it dry immedi-  
ately. Liquids can contain minerals that corrode elec-  
tronic circuits.  
• Use and store the AFX-300 only in normal temperature  
environments. Temperature extremes can shorten the  
life of electronic devices and distort or melt plastic parts.  
• Handle the AFX-300 gently and carefully. Dropping it can  
damage circuit boards and cases and can cause the  
AFX-300 to work improperly.  
• Keep the AFX-300 away from dust and dirt, which can  
cause premature wear of parts.  
• Wipe the AFX-300 with a damp cloth occasionally to  
keep it looking new. Do not use harsh chemicals, clean-  
ing solvents, or strong detergents to clean your AFX-300  
Modifying or tampering with the AFX-300’s internal compo-  
nents can cause a malfunction and invalidate its warranty and  
void your FCC authorization to use it. If your AFX-300 is not  
performing as it should, take it to your local Radio Shack store  
for assistance. If the trouble is harming the telephone lines,  
the telephone company might ask you to disconnect your  
AFX-300 until you have resolved the problem.  
43  
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IF YOU HAVE PROBLEMS  
If your AFX-300 does not work or works poorly, check the con-  
nection to the telephone line. If the reception is noisy when  
you make a call, hang up the phone’s handset. Then pick up  
the handset and redial the number.  
If a power failure occurs while your fax machine/fax modem is  
operating, the AFX-300 might not operate properly when pow-  
er is restored. If this happens, follow these steps to reset the  
AFX-300.  
1. Unplug the adapter’s barrel plug from the AFX-300’s DC  
12V jack.  
2. Wait about 10 seconds, then reconnect the adapter’s  
barrel plug to the AFX-300’s DC 12V jack.  
Note  
: If the AFX-300 still does not work properly, disconnect it  
from AC power, unplug all modular connections, remove the  
backup batteries, then follow all installation procedures in or-  
der (see “Installation” on Page 7).  
If the AFX-300 does not transfer calls to your fax machine/fax  
modem or data modem, the phone line voltage might be too  
low. Normal phone line voltage is 48 volts DC. The AFX-300  
operates with voltage down to about 43 volts DC. If the phone  
line’s voltage is below 43 volts DC, your AFX-300 might not  
operate properly. Check with your phone company if you think  
you have this problem.  
44  
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THE FCC WANTS YOU TO KNOW  
In the unlikely event that your AFX-300 causes problems on  
the phone line, the phone company can disconnect your ser-  
vice. The phone company attempts to notify you in advance. If  
advance notice is not practical, the phone company notifies  
you of your right to file a complaint with the FCC.  
Also, the phone company can make changes to its lines,  
equipment, operations, or procedures that could affect the op-  
eration of your AFX-300. The phone company notifies you of  
these changes in advance, so you can take steps to prevent  
interruption of your phone service.  
LIGHTNING  
Your AFX-300 has built-in protection circuits to reduce the risk  
of damage from surges in phone and power line current.  
These protection circuits meet or exceed FCC requirements.  
However, lightning striking the phone line or power lines can  
damage your AFX-300.  
Lightning damage is not common. Nevertheless, if you live in  
an area that has frequent electrical storms, we suggest that  
you unplug your AFX-300 during storms to reduce the possi-  
bility of damage.  
45  
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NOTES  
46  
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47  
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RADIO SHACK LIMITED WARRANTY  
This telephone product is warranted against manufacturing defects in  
material and workmanship for one (1) year from the date of purchase  
from Radio Shack company owned stores and authorized Radio Shack  
franchisees and dealers. Within this period bring your Radio Shack  
sales slip as proof-of-purchase date to any Radio Shack store.  
This warranty does not cover damage or failure caused by or attribut-  
able to Acts of God, abuse, misuse, improper or abnormal usage, faulty  
installation, improper maintenance, lightning or other incidence of  
excess voltage, or any repairs other than those provided by a Radio  
Shack Authorized Service Facility, or transportation costs. Radio  
Shack is not responsible or liable for indirect, special, or conse-  
quential damages arising out of or in connection with the use or  
performance of the product or other damages with respect to loss  
of property, loss of revenue or profit, or costs of removal, installa-  
tion or reinstallation.  
EXCEPT AS PROVIDED HEREIN, RADIO SHACK MAKES NO  
EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES ARE  
LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIM-  
ITED WARRANTIES CONTAINED HEREIN. Some states do not allow  
the limitation or exclusion of incidental or consequential damages and  
some states do not allow limitation or exclusion of implied warranties;  
therefore, the aforesaid limitation(s) or exclusion(s) may not apply to  
the purchaser. There will be charges rendered for repairs to the product  
made after the expiration of the aforesaid one (1) year warranty period.  
This warranty gives you specific legal rights and you may also have other rights  
which vary from state to state.  
We Service What We Sell  
9/94  
RADIO SHACK  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
Printed in Hong Kong  
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