Guardian Telecom Inc.
Installation and Operation
Desktop Telephones DTT-50-Z & DTT-60-Z
Page 17
Enter a two digit number or use the arrow keys to scroll through the register. The
associated phone number will be displayed.
Use the [
↑
] or [
↓
] keys to shift through the Phone Book.
Press [MR] key to dial out the current register phone number.
The dialed number will be displayed for two seconds then the LCD will switch back to
show the Audio Mode status. The arrow keys will resume the volume control function.
Subsequent keypad dialing is resumed.
Note:
When a phone number register is clear, calling it through Quick dial or
Phone Book dialing will result in no dialing at all.
All phone number registers that are not used should be cleared.
9. Time out:
The time out counter will enforce a fixed call duration which is programmable from one minute to
nine minutes or alternatively 60 minutes, starting from the moment the phone is off hook. It will
generate 3 beep tones, and display a time out message on the LCD ten seconds prior to
disconnecting the call. This feature is applicable in both Handset and Hands-free modes. This
feature is useful when the user forgets to return the handset back to the cradle, or does not
press the [SPK] key to hang up the call while the phone is in the Hands-free Mode.
(This feature can set to maximum 60 minutes).
After time out the phone is disconnected from the phone line. The phone will ring when there is
an incoming call. The handset has to be returned to the cradle for the phone to be used in
handset or hands-free mode to answer the call.
Cleaning Tips for Guardian Telephones
Guardian Telephones may occasionally need to be cleaned to maintain appearance. Generally,
wiping the surface with a clean, water dampened cloth will remove most films or residues. If the
soiling is too stubborn for plain water, a mild detergent solution may be used. Be sure to wipe
away any detergent residue with a plain water dampened cloth. The Telephone may be
cleaned with any general-purpose household glass and surface type cleaner. Do not spray the
telephone directly! Spray the cleaner on a soft cloth then wipe the surface. Pre-treated cloths,
like those used for eyeglasses or cameras, may be used to clean the Telephone. Premoistened
towelettes may also be used, however, avoid those containing lanolin or aloe as they will leave
a slippery residue. The handset and surface of the telephone may be cleaned with disinfectants
used for general cleaning in a medical environment. Isopropyl alcohol may be used applied with
a cloth. Avoid using alcohol on silicon based keypads, since doing so may significantly degrade
legibility.
•
Do not use furniture polishes, waxes or plasticizer-based cleaner (Armor All etc.)
•
Do not use lanolin, aloe, glycerin or other skin care type products.
•
Do not apply any solvent such as acetone, mineral spirits etc.
•
Do not directly spray or immerse the handset.
