ET-548 25-Channel Cordless Headset Telephone
(430-1048A) Installation Faxback Doc. # 51342
Note: The supplied adapter is a Class 2 120 VAC/12 VDC adapter that
delivers at least 200 milliamps with its center tip set to
positive.
Read This Before Installation
We have designed your phone to conform to federal regulations, and you can
connect it to most telephone lines. However, each device that you connect
to the phone line draws power from the phone line. We refer to this power
draw as the device's ringer equivalence number, or REN. The REN is on the
bottom of the base.
If you are using more than one phone or other device on the line, add up
all the RENs. If the total is more than five, your phones might not ring.
In rural areas, a total REN of three might impair ringer operation. If
ringer operation is impaired, remove a device from the line.
FCC Statement
This telephone complies with Part 68 of FCC Rules. You must, upon
request, provide the FCC Registration Number and the REN to your phone
company. These numbers are shown on the bottom of the base.
Note: You must not connect your phone to any of the following:
coin-operated systems.
party-line systems.
most electronic key phone systems.
Selecting a Location
You can place the phone's base on a desktop, shelf, or table. Select a
location that is:
near an AC outlet.
near a telephone line jack.
out of the way of normal activities.
away from electrical machinery, electrical appliances, metal walls,
filling cabinets, wireless intercoms, security alarms, and room
monitors.
The base's location affects the phone's range. If you have a choice of
several locations, try each to see which provides the best performance.
Your telephone connects directly to a modular telephone line jack. If
your telephone wiring does not have a modular jack, you can update the
wiring yourself or have the telephone company update it for you.
Notes: RadioShack stores sell jacks and adapters to convert older wiring
methods to modular wiring.
The USOC number of the jack to be installed is RJ11C.
CAUTION: The supplied adapter is a Class 2 120 VAC/12 VDC adapter that
delivers at least 200 milliamps with its center tip set to
positive. Its plug correctly fits the phone's DC 12V jack.
Using an adapter that does not meet these requirements could
damage the phone or the adapter.
Connecting The Phone
After you select a location for the phone's base, follow these steps to
connect it to AC power and to the phone line.
1. Plug one end of the supplied modular cord into the TEL. LINE jack on
the back of the base.
2. Plug the modular cord's other end into a modular phone line jack.
3. Plug the supplied AC adapter's barrel plug into the DC 12V jack on the
back of the base.
4. Plug the adapter into a standard AC outlet. The IN USE/CHARGE
indicator lights when the keypad is on the base.
5. Lift the base's antenna to a vertical position.
Connecting and Charging The Battery Pack
The ET-548 comes with a rechargeable nickel-cadmium battery pack in the
remote keypad. You must connect and then charge the battery pack for at
least 15 hours before you use it the first time.
1. Use a Phillips screwdriver to remove the screw that secures the
battery compartment cover, then remove the cover.
2. Slide the battery pack's connector onto the connector pins inside the
battery compartment.
3. Replace the cover and secure it with the screw.
4. To charge the battery pack, place the remote keypad on the base. The
IN USE/CHARGE indicator on the base lights.
Recharge the battery pack when the TALK/LOW BATT indicator lights.
Notes: When you first use the phone after charging or recharging the
battery pack, the phone might not work and you might hear error
tones. (You do not hear the error tones if POWER is set to OFF.)
If you hear the error tones, return the remote keypad to the
cradle for at least 5 seconds to reset the security access
protection code.
About once a month, fully discharge the battery pack by keeping
the phone off the base until the TALK/LOW BATT indicator lights.
Otherwise, the battery pack loses its ability to fully recharge.
If battery power is low, POWER is set to ON, and the headset is
not in use, the TALK/LOW BATT indicator slowly flashes. If
battery power is too low, the indicator does not light.
If the IN USE/CHARGE indicator does not light when you place the
remote keypad on the base, be sure the battery pack and AC adapter
are correctly and securely connected. Also, check the charging
contacts on the remote keypad and base. If the contacts are dirty
or tarnished, clean them with a pencil eraser.
Attaching The Headset Holder
Put the headset holder into the slot on the back of the base and slide it
into place.
Adjusting The Headset
1. Put on the headset, and adjust the band until it rests with almost no
pressure on your ear and the top of your head.
If the headset is loose, remove it and gently push the headset band
inward slightly to tighten it. If the headset is tight, gently pull
the headset band out to loosen it.
2. Hold the headset in place, and turn the microphone boom until it is
about 2 inches from your mouth.
When you are not using the headset, place it on the headset holder.
Setting The Dialing Mode
Set TONE-PULSE on the side of the base for the type of service you have.
If you are not sure which type you have, do this simple test after
charging the battery.
1. Set POWER to ON.
2. Set TONE-PULSE to TONE.
3. Lift the remote keypad from the base. Then press TALK/HANG UP and
listen for a dial tone.
4. Press any number other than 0.
If the dial tone stops, you have touch-tone service. Leave TONE-PULSE
set to TONE.
If the dial tone continues, you have pulse service. Set TONE-PULSE to
PULSE.
Using The Belt Clip
Use the belt clip to hang the remote keypad on your belt or waistband for
handsfree carrying.
(EB 2/5/99)
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