Cobra CP-705 Operating instructions

How To Use Your
Cordless Telephone Model CP-705
U.S. PATENT 4876709
Thank you for your purchase of a Cobra® INTENNA® Cordless Telephone —
the world’s first and only full-range-power cordless telephone without any
external antennas!
No more extending, bending, or breaking the telescopic metal antennas found
on traditional cordless phones — your Cobra INTENNA conceals its antenna
systems inside the handset and base, where they should be, out of your way.
Now you can install your new Cobra INTENNA cordless phone virtually anywhere. Without cumbersome external antennas to worry about, put your new
phone anywhere a corded phone can go! Then enjoy the freedom of using
your new cordless phone all over the house as well as outside in your yard.
Your new Cobra Model CP-705 is also the most technologically advanced
cordless phone in Cobra’s new INTENNA series. It has ten selectable channels
(the maximum number available) for optimum interference-free use. And its
patented Cobra Clear Call® PLUS Circuitry with compander noise-reduction
system ensures corded-phone sound quality.
Please take a moment to review this booklet and become familiar with all of
the many user-friendly convenience features built into your new Cobra INTENNA Cordless Phone.
If you need further assistance installing or using your new phone, please call
our toll-free consumer “hotline” at 1-800-COBRA 22 between 8:30 a.m. and
5:00 p.m. (Central Time) Monday through Friday.
Installation Information
Your Cobra INTENNA Cordless Telephone without any external base or handset
antennas offers many new installation choices compared to traditional cordless
phones with telescopic antennas. Your new phone can be located under cabinets, next to lamps, on crowded countertops and in other tight spaces that were
previously inaccessible to cordless phones.
Maximum range is obtained by installing the base unit in the highest living area
of your home. The location you choose must be near an electrical outlet and a
telephone wall jack. (To minimize electrical interference, avoid plugging your
cordless phone into the same electrical outlet that has a charging unit for a
cordless vacuum, screwdriver or other electronic device.)
Installation Information (Cont.)
Wall Mounting Instructions
• Never install telephone wiring during a lightning storm.
The following steps enable installation on a new or existing telephone wallmounting plate or directly onto a wall. (Your Cobra INTENNA is designed to
be used with any AT&T, GTE, local phone company or other wall-mounting
plates that can be purchased from most local electronics stores.)
• Plug modular phone connector into telephone wall jack.
• Align mounting studs on the plate to the holes on the bottom of the INTENNA base; push base onto studs and slide down on the wall plate.
• Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
• Never touch uninsulated telephone wires or terminals unless the telephone
line has been disconnected at the network interface.
• Use caution when installing or modifying telephone lines.
Modular Phone Jack
Quick Set-Up Guide
Diagram #2: Installation on a
telephone wallmounting plate
The following basic steps enable quick and easy installation of your new Cobra
INTENNA cordless phone for use on a desk or countertop. You are encouraged
to review this complete instruction manual to become familiar with all of the
operating instructions and features of your new phone.
NOTE: Before using, connect your new phone to AC power — see instruction
below — to charge it overnight (at least 12 hours) for optimum conditioning
of the rechargeable batteries inside the cordless handset.
• Insert the round connector of the power adapter into the POWER jack (at
the rear of the cordless phone’s base; see diagram #1 below) and plug the
power adapter into a standard 110V household electrical outlet. Then
place the handset into the base so the CHARGE indicator lights.
Pulse/Tone Switch
AC Power Jack
On/Off Switch
Diagram #1:
your phone's
AC power
adapter cord
STOP: Charge your phone overnight before proceeding with installation.
Mounting Studs
Wrap doubled cord around bottom of base. Cord can be hidden between
bottom of base and wall-mounting plate.
Attach the power adapter to the POWER connection (on the base of the
phone) and plug into a household AC power outlet.
To install directly on any wall, you’ll need to provide two screws and wall
anchors; follow these steps:
— Drill two holes 3 1/4” apart and insert the wall anchors.
— Drive the screws into the anchors until the head of each screw is
protruding about 1/8” from the wall.
— Align the holes in the cordless base over the screw heads; push base
in and slide down on screws (see diagram #3).
— Plug modular phone connector into telephone wall jack; attach the
power adapter to the POWER connection (on the base of the phone)
and plug into to a household AC power outlet.
Screw Heads
• After charging, remove the twist-tie from the phone cord and plug the
modular telephone connector into the phone jack on your wall.
Diagram #3:
directly on a wall
• Make sure that the RINGER switch is ON (located at the rear of the base).
• Set the PULSE/TONE switch (also at the rear of the base) for proper operation (see page 7 for details).
Modular Phone Jack
Using Your Phone
Operational Features
After charging the handset batteries overnight (at least 12 hours), use your
Cobra INTENNA cordless phone like any corded phone. With Cobra’s AUTO
STANDBY feature, just pick the handset up to answer or place a call.
The following features offer state-of-the-art performance and the ultimate in
user-friendly convenience with your new Cobra INTENNA cordless telephone.
Activate AUTO STANDBY by pressing and releasing the TALK button on
the handset. The TALK light will illuminate.
Return handset to base without pressing the TALK button. Now there
will be no need to use the TALK button to answer a call unless you keep
the handset away from the base for extended periods (see below). When
the phone rings, just pick up and talk.
After placing or answering a call, return the handset to the base without
pressing the TALK button; your phone automatically disconnects the
call and resets the AUTO STANDBY feature.
To place a call, lift the handset and press the TALK button. Listen for dial
tone and dial the number.
• The TALK indicator (the lighted TALK button) must be OFF when the
handset is away from the base. The phone is now in STANDBY mode,
ready to ring if a call is received.
Press and release the TALK button (the indicator will light) to answer or
place a call.
Press and release the TALK button when finished with a call in order to
“hang up” the phone.
Your Cobraphone has Clear Call® PLUS
Circuitry with compander noise-reduction
system for optimum audio performance
without background noise.
This feature enables answering and placing calls just like a corded phone. (See
page 4 for instructions on activating this
The handset of this phone may be kept on
standby mode (TALK light OFF) for a few
days at a time in a convenient location
away from the recharging base. In this
condition, it is ready to answer or place
calls by pressing and releasing the TALK
button. The duration of the battery saver
feature will depend on your actual use of
the phone in its remote location.
Note: A warning beep tone will sound
(and the BAT indicator will flash) when the handset batteries need overnight
Ten selectable transmitting/receiving channels (the maximum available) are built
into your Cobra INTENNA for optimum interference-free use.
You may need to change channels if you experience interference (noise, static,
or poor audio):
• With TALK light on, press and release the CHAN button on the handset
to advance to a new channel. A series of beep tones (2 groups of 2
beeps) will sound to indicate successful channel change.
• An alert tone (three beeps) will sound if a new channel is unavailable
due to interference. In that case, move closer to your cordless base and
try to change channels again.
Your Cobra INTENNA features digital security coding (in accordance with FCC
regulations) to reduce the chance of interference from your neighbors’ cordless
phones. These inaudible, electronic codes are transmitted automatically by
your phone to establish a secure link between your cordless handset and base.
Use the back of card on the handset (marked"DIGITAL CODING") to write your
phone number. (Use the tip of a paper clip to pry off the protective plastic
This feature briefly interrupts the phone line so that you may access some of the
advanced features — like “Call Waiting” and “Three-Way Calling” — that may
be offered at extra cost by your local telephone company. Press and release
the FLASH button on the handset to answer a second phone call or place a
conference call if you subscribe to these services.
Your cordless telephone handset is compatible with inductively coupled hearing
The revolutionary, patented INTENNA hidden-antenna system is a Cobra exclusive. Now you own the world’s first and only full-range-power cordless telephone that conceals the handset and base antennas inside the phone and out of
the way. No more traditional metal antennas to extend, bend or break. Cobra’s
hidden antennas are perfectly matched to your phone’s microprocessor circuitry
for optimum performance — and they offer the ultimate in user-friendly convenience.
If three beeps are heard immediately after the TALK switch is pressed, the handset is too far away from the base. The handset and TALK indicator will automatically turn off. Move closer to the recharging base and then try your call again.
After a power failure in your home (or any time you unplug your phone from
AC power and then reconnect it), you must return the cordless handset to the
base for about five seconds. This automatically resets the matching digital security codes and returns the channel selector to its start-up setting.
Your Cobra INTENNA cordless phone can be used with any phone system
because it is switchable from pulse to tone dialing (see switch on rear of the
base) depending on which service you are using. When using pulse dialing,
mixed PULSE and TONE dialing may be used (to access certain long-distance or
computerized banking services, for example) by selecting PULSE with the base
switch and then using the
button on the handset to temporarily switch to
TONE dialing. Hanging up resets to PULSE.
This ON/OFF switch (located at the rear of the base) controls your cordless
handset’s electronic ringer; no ring will sound in the OFF position.
This exclusive Cobra electronic circuitry is an added security measure to protect your phone line from being accidentally accessed by a neighbor’s cordless
phone. Secur-Loc activates automatically every time your cordless handset is
placed into its base.
Each time you dial, the phone number you’re calling is automatically saved in a
special REDIAL memory. To call that number again — especially useful after
receiving a busy signal — press and release the REDIAL button on the handset
and the number will be automatically redialed.
Rechargeable Battery Information
A Few Words About Cordless Phone Performance
NOTE: Before using your new Cobra INTENNA cordless telephone for the first
time, you must charge the batteries overnight (at least 12 hours) for optimum
long-life conditioning of the nickel-cadmium rechargeable handset batteries.
Your Cobra INTENNA cordless phone uses radio transmission to communicate
between the base and handset. It is thus subject to occasional interference—static or buzzing noises, for example. These conditions may be caused by electrical motors on household appliances, fluorescent lights, electrical storms and
other sources.
When your cordless handset batteries need recharging, the following warning
measures will remind you to immediately return the handset to the base for
recharging (this normally requires at least 12 hours of continuous charging):
1) The BAT indicator on the handset will flash.
2) A warning beep will sound while you are using the phone (this indicates
you have only a few minutes of battery power remaining to complete
your conversation before the phone disconnects).
3) When the handset has been away from the base for a few days and is in
need of recharging, the handset will beep in 30 second intervals for five
minutes. Return handset to base for recharging.
These steps will enhance the maximum performance of your new phone:
Change channels by pressing the CHAN button on the handset if you
experience interference.
Don't cover the upper section of the cordless handset with your hand
(see diagram #4). This may block the internal antenna located at the top
of the handset, possibly reducing the phone's range and audio clarity.
Always hold the handset at the middle or close to the bottom.
Diagram #4:
Hold the
cordless handset at the
middle or bottom area
of your phone for
best performance.
NOTE: The CHARGE indicator will remain on as long as the handset is in the
base, even after the batteries are fully recharged. The batteries will not be
damaged if the handset remains in the base continuously; the charging system
is self-adjusting and will never overcharge the batteries.
Routine use of your cordless phone may deplete the rechargeable batteries in
three to four years (depending on actual level of usage). The batteries will need
to be replaced when the handset no longer accepts recharging and will not
function when the TALK button is pressed.
Replacement batteries are available from any Cobra service station or direct
from Cobra (see accessories instructions/order form at the end of this booklet).
To replace:
1) Remove the phone number display window and card.
2) Remove screw in center recessed area.
3) Use a coin in the slot at the top to carefully pry open front from back of
4) Carefully take off back of handset.
5) Unplug the connector cord and discard old batteries.
6) Position and connect new battery.
7) Put back and front together so that hooks at bottom engage. Then apply
pressure to both sections to reassemble.
8) Replace screw in center of phone number section. Return card and window
to area.
9) Put handset in base charging well and allow batteries to charge 12 hours.
Avoid resting the handset on your shoulder during conversations; this
may also block the performance of the internal antenna.
Don't plug your phone's power cord into an active AC outlet that also
provides power for a major appliance or for charging units for cordless
appliances (vacuums, screwdrivers, etc.) or other electronic devices.
Performance of your phone may be improved by uncoiling the base
telephone cord (because the INTENNA hidden-wire antenna system is
inside the phone cord).
Troubleshooting Guide
If your cordless phone does not seem to operate properly, please check the following and refer to the appropriate sections in this booklet for detailed information:
The phone is dead; no indicator lights are on: Are the power cord
and telephone cord connected?
Handset beeps during conversations or when away from the base: The
batteries need recharging; return the handset to the base for overnight recharging.
Hearing poor audio or added interference during calls: Don’t cover the
section of the handset with your hand or rest the phone on your
shoulder. This blocks the special internal Cobra INTENNA handset antenna.
Handset disconnects, loses performance and/or beeps three times when
in use away from the base: You may be out of range or your batteries
may need recharging. Move closer to the base and/or recharge batteries.
Unable to make a call due to interference: Move center closer to the
base unit and change channels.
Handset won’t work after a power outage or after disconnecting phone
from AC power and then reconnecting it: Return the handset to the
base for about five seconds to automatically reset the security coding and
channel selector.
For technical assistance, please call our Automated Help Desk which can assist you by
answering the most frequently asked questions about Cobra products.
(773) 889-3087
24 hours a day, 7 days a week.
A Consumer Service Representative can be reached through
this same number 8:00 am - 8:00 pm, Monday through Friday, CST.
Technical assistance is also available on-line in the Frequently Asked Question (FAQ)
section at or by e-mail to
“If your product should require factory service please call Cobra first before sending your unit in. This will ensure the fastest turn-around time on your repair.”
You may be asked to send your unit to the Cobra factory. It will be necessary to
furnish the following in order to have the product serviced and returned.
1. For Warranty Repair include some form of proof-of-purchase, such as a
mechanical reproduction or carbon or a sales receipt. If you send the original receipt it cannot be returned.
2. Send the entire product. For example—must include base, handset, cords
and power adapter furnished with the product.
3. Enclose a description of what is happening with the unit. Include a typed or
clearly printed name and address of where the unit is to be returned.
4. Pack unit securely to prevent damage in transit. If possible, use the original
packing material.
5. Ship prepaid and insured by way of a traceable carrier; such as United Parcel
Service (UPS) or First Class Mail; to avoid loss in transit to Cobra Factory
Service, Cobra Electronics Corporation, 6500 W. Cortland St., Chicago, IL
6. If the unit is in warranty, upon receipt of your unit it will either be repaired or
exchanged depending on the model. Please allow approximately 3 to 4
weeks before contacting us for status. If the unit is out of warranty a letter will
automatically be sent informing you of the repair charge or replacement
charge. If you have any questions, please call 1-773-889-3087 for assistance.
Please note: This cordless telephone operates under part 15 and part 68 of FCC
rules. Operation is subject to two conditions: 1) It may not interfere with radio
communications, and 2) It must accept any interference received, including that
which may cause undesirable operation. See the Operational Features section of
this booklet for ways to reduce interference.
Your telephone company is required by the Federal Communications
Commission to allow you to connect FCC registered telephones to their lines.
The FCC requires you to provide information, if requested by the local telephone
company, about the connection of an FCC registered telephone to their lines.
They may ask you for the FCC registration number and ringer equivalence number (REN), both of which are on the bottom of the base. They may also ask for
the Universal Service Order Code (USOC) number which is RJ-11C. It is illegal
to use this phone on a party line or to connect it to a coin-operated telephone.
Limited One-Year Warranty
Cobra Cordless Phone Accessories
Cobra Electronics Corporation warrants that its Cobra cordless telephone products, and the component parts thereof, will be free of defects in workmanship
and materials for period of one (1) year from the date of first consumer purchase.
This warranty may be enforced by the first consumer purchaser provided that the
product is utilized within the U.S.A.
Cobra will, without charge, repair or replace, at its option, defective cordless
telephone products or component parts upon delivery to the Cobra factory
Service Department, accompanied by proof of the date of first consumer purchase, such as a duplicated copy of a sales receipt.
You must pay any initial shipping charges required to ship the product for warranty service. The return charges will be at Cobra’s expense if the product is
repaired or replaced under warranty. For further details concerning procedures
for obtaining service, see the “If You Think You Need Service” section of this
Owner’s Manual.
Exclusions: This limited warranty does not apply 1) to any product damaged by
accident, improper line voltage or weather related circumstances; 2) in the event
of misuse or abuse of the product or as a result of unauthorized alterations or
repairs; 3) to non-defective original equipment Nickel Cadmium rechargeable
batteries; 4) if the serial number has been altered, defaced or removed; or 5) if
the owner of the product resides outside the U.S.A.
All implied warranties, including warranties of merchantability and fitness for a
particular purpose, are limited in duration to the length of this warranty.
Cobra shall not be liable for any incidental, consequential or other damages,
including, without limitation, damages resulting from loss of use or cost of installation.
Some states do not allow limitations on how long an implied warranty lasts
and/or do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitations may not apply to you.
Cost Ea. X
For use with model CP-705
For use with model CP-705
For use with CP-705
Illinois residents add 7%
Cook Co. residents add .75% (7.75% total)
★★ Chicago residents add 1% (8.75% total)
★★ Indiana residents add 5%
★★ Michigan residents add 4 %
★★ Minnesota residents add 6%
★★ Ohio residents add 6%
★★ Wisconsin residents add 5%
(Tax if applicable)
Make check or money order (no stamps) payable to:
Cobra Accessories Dept.
6500 W. Cortland St., Chicago, IL 60707
Call 1-773-889-3087 or FAX 1-773-622-2269 (for credit card orders)
Allow 4 to 6 weeks for delivery. Offer valid in Continental U.S. only.
Please print clearly:
Address (Not P.O. Box)
Credit Card No.
Exp. Date
Customer Signature
Circle One:
In addition to its exclusive series of Intenna cordless telephones and answering systems, Cobra is also one of America’s leading brands of
CB radios and accessories, and Safety Alert® radar/laser detectors.
(Prices subject to change without notice)
This limited warranty gives you specific legal rights, and you may also have other
rights which vary from state to state.
Cobra Electronics Corporation
6500 W. Cortland Street
Chicago, Illinois 60707
Part No.
Important Safety Instructions
When using your telephone equipment, basic safety precautions should always be
followed to reduce the risk of fire, electric shock and injury to persons, including
the following:
1. Read and understand all instructions.
2. Follow all warnings and instructions marked on the product.
3. Unplug this product from the wall outlet before cleaning. Do not use liquid
cleaners or aerosol cleaners. Use a damp cloth for cleaning.
4. Do not locate base unit near water, for example, near a bath tub, wash bowl,
kitchen sink, or laundry tub, in a wet basement or near a swimming pool.
5. Do not place this product on an unstable cart, stand or table. The product
may fall, causing serious damage to the product.
6. Slots and openings in the cabinet and the bottom or back are provided for
ventilation, to protect it from overheating; these openings must not be
blocked or covered. The openings should never be blocked by placing the
product in the bed, sofa, rug or other similar surface. This product should
never be placed near or over a radiator or heat register. This product should
not be placed in a built-in installation unless proper ventilation is provided.
7. This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply
to your home, consult your dealer or local power company.
6500 West Cortland Street
Chicago, IL 60707
8. Do not allow anything to rest on the power cord. Do not locate this product
where the cord will be abused by persons walking on it.
9. Do not overload outlets and extension cords as this can result in the risk of
fire or electric shock.
10. Never push objects of any kind into this product through cabinet slots as
they may touch dangerous voltage points or short out parts that could result
in a risk of fire or electric shock. Never spill liquid of any kind on the product.
11. To reduce the risk of electric shock, do not disassemble this product, but take
it to qualified servicemen when service or repair work is required. Opening
or removing covers may expose you to dangerous voltages or other risks.
Incorrect reassembly can cause electric shock when the appliance is subsequently used.
12. Avoid using telephone (other than a cordless type) during an electrical storm.
There may be a remote risk of electric shock from lightning.
13. Do not use the telephone to report a gas leak in the vicinity of the leak.
Important Safety Instructions (continued)
14. Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions:
A. When the power supply cord or plug is damaged or frayed.
B. If liquid has been spilled into the product.
C. If the product has been exposed to rain or water.
D. If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions because improper adjustment of other controls may result in
damage and will often require extensive work by a qualified technician
to restore the product to normal operation.
E. If the product has been dropped or the cabinet has been damaged.
F. If the product exhibits a distinct change in performance.
The cordless handset operates on batteries, please read and follow instructions:
A. Use only the battery pack supplied with the unit:
3.6 volt, 270 mAh, rechargeable nickel-cadmium battery pack.
B. Do not dispose of battery pack in a fire. The cells may explode. Check
with local codes for possible disposal instruction.
C. Since released electrolyte is corrosive and may cause damage to eyes or
skin and may be toxic if swallowed:
C1. Do not open or mutilate battery pack.
C2. Always replace the entire battery pack rather than reusing one or
more cells.
C3. Do not expose batteries to heat or flame.
D. Exercise care in handling the battery pack in order not to "short" the battery contacts with conducting materials such as rings, bracelets, and keys.
The battery or conductor may overheat and cause burns.
15. Never install telephone wiring during a lightning storm.
16. Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
17. Never touch uninsulated telephone wires or terminals unless the telephone
line has been disconnected at the network interface.
18. Use caution when installing or modifying telephone lines.
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