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63
Digital Cordless Telephone
62
Digital Cordless Telephone
Airtime
- Actual time spent talking on the wireless phone.
Most carriers bill customers based on how many
minutes of airtime they use each month.
Antenna
- A device for transmitting or receiving signals. The
size and shape of antennas is determined, in part,
by the frequency of the signal they receive.
Wireless phones and the base station must have
antennas.
Base Station
- The fixed radio transmitter/receiver that main-
tains communications with mobile radio tele-
phones within a given area. (Typically seen as
cell or cell site)
CDMA
- (Code Division Multiple Access) A spread-spectrum
approach to digital transmission. With CDMA, each
conversion is digitized and then tagged with a code.
The mobile phone deciphers only a particular code to
pick the right conversation off the air. The transmit-
ted signal is just above noise level across the avail-
bale bandwidth.
Channel
- Communications signals transmit along paths
called channels.
Codec
- COmpression & DECompression.
Deactivation
- The process of rendering a wireless phone
inactive.
DTMF
- (Dual-tone Modulated Frequency ) You send DTMF
signals when you enter numbers by pressing the digit
keys.
Glossary of Terms
• Do not use harsh chemicals, cleaning solvents or strong
detergents to clean the phone. Wipe it with a soft cloth
slightly dampened in mild, soapy water.
• If the phone or any of its accessories are not working prop-
erly, take them to your nearest qualified service centre. The
personnel there will assist you, and if necessary, arrange
for the phone to be repaired.
Emergency Calls
Important!
This phone, like any cellular phone, uses radio
signals, cellular and landline networks, as well
as user-programmed functions that cannot
guarantee connection in all conditions.
Therefore, you should never rely solely on any
cellular phone for essential communi-cations
(medical emergencies for example).
Remember, to make or receive any calls, the phone must be
switched on and in a service area with adequate cellular sig-
nal strength.
Emergency calls may not be possible on all cellular phone net-
works or when certain network services and/or phone fea-
tures are in use. Check with local cellular service providers.