Cordless Phone : What is it?
| Cordless phones connect to the cradle, or base station, using radio waves instead of telephone wires. They are fitted with radio transmitter/receivers that send and receive signals from the base station. They can be used away from the cradle within a range of about 100 feet, bypassing walls and physical barriers. However, they generally have lower sound quality and are prone to interference from other cordless devices. Also, unlike corded telephones, cordless handsets are usually battery-powered, and the cradles are connected to mains power. |
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Kinds of Cordless Phones include the following: |
Spread Spectrum Cordless Phones
- Spread Spectrum Cordless Phones distribute the signals over different frequencies instead of fixing onto a single channel.
- They continuously scan the spectrum to find the clearest channel for transmission.
- They provide excellent sound quality and range, making them ideal for large homes or offices.
5.8 GHz/5.8 GHz digital spread spectrum
- These cordless phones scan the spread spectrum for the best reception available.
- They operate at a less crowded frequency than older 2.4 GHz phones.
- They have decent reception and quality, but are still susceptible to interception.
2.4 GHz/900 MHz digital spread spectrum
- These cordless phones separate radio signals into 2.4 GHz and 900 MHz to reduce interference.
- They also have better quality and reception than basic 2.4 GHz phones.
900 MHz digital cordless phones
- These cordless phones provide excellent reception because the 900 MHz bandwidth is seldom used by cordless devices.
- They are available in analog and digital models. Analog 900 MHz phones are cheaper but prone to interference and distortion, while digital models have better sound and have two to three times as much range.
46/49 MHz cordless phones
- These cordless phones use analog technology to receive and transmit sound.
- They are highly susceptible to interference, distortion, and tapping because the 46/49 spectrum is occupied by many cordless devices.
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Power: Choose a cordless phone that uses readily available batteries for easier replacement. Look for one with status lights that indicate battery power and alert you when the batteries need replacement.
Reception: Choose a cordless phone with a wide range if you have a large home or office. Standard 100-foot range is suitable for most homes. Look for one that operates at a less crowded frequency, such as 5.8 GHz or 900 MHz, to keep other cordless devices from tapping or interfering with your conversations.
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