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Frequency response not being the full frequency response available in a wired landline telephone Most manufacturers claim a range of about 30 metres (98 ft) for their 2.4 GHz and 5.8 GHz systems, but inexpensive models often fall short of this claim.
The BeoCom 2 is a model of cordless telephone from 2002 [7] designed by David Lewis. [8] The handset is 321mm (≈1 foot) in length with base, and weighs 220 g (≈7.7 oz). It transmits its signals at 2.4 gigahertz in North America, and using DECT frequencies elsewhere. Production of the North American model was discontinued in 2012.
Recent Gigaset and Gigaset pro cordless phones support Cat-iq 2.0 with HD Voice, allowing high-quality calls with a frequency response up to 7 kHz on VoIP/SIP phones and home gateways, using the G.722 wideband audio codec (dubbed High Definition Sound Performance (HDSP) by Gigaset).
A CT2 service was offered in Singapore from 1993 to 1998 by Telecommunications Equipment under the brand name Callzone, [7] [8] using Motorola's Silverlink 2000 Birdie handset. Typical CT2 users were sold a handset and base station which they could connect to their own home telephone wiring.
Despite being able to transmit and receive data, the whole unit is colloquially referred to as a "receiver". On a mobile telephone or other radiotelephone, the entire unit is a transceiver for both audio and radio. A cordless telephone uses an audio and radio transceiver for the handset, and a radio transceiver for the base station.
Using wired phones, which do not transmit. Using cordless phones that do not use the 2.4 GHz band. Using the 5 GHz band. DECT 6.0 (1.9 GHz), 5.8 GHz or 900 MHz phones, commonly available today, do not use the 2.4 GHz band and thus do not interfere. VoIP/Wi-Fi phones share the Wi-Fi base stations and participate in the Wi-Fi contention protocols.
Telephone exchange equipment (44 P) W. Western Electric telephones (8 P) Pages in category "Telephony equipment" ... Cordless; Cordless telephone;
second-generation mobile telephone 2.5G: Enhanced 2G mobile telephone 3G: third-generation mobile telephone 4ESS Number 4 Electronic Switching System (Alcatel-Lucent) 4WTS: Four-wire termination set: US 5ESS Number 5 Electronic Switching System (Alcatel-Lucent) ACD: Automatic Call Distribution/Director ACTS: Advanced Coin Telephone Service: US ADSL