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A 3.5 mm phone connector A 3.5 mm 4-conductor TRRS phone connector A 3.5 mm 5-conductor TRRRS phone connector. In the most common arrangement, consistent with the original intention of the design, the male plug is connected to a cable, and the female socket is mounted in a piece of equipment.
Wireless Sensor Networks (WSN / WSAN) are, generically, networks of low-power, low-cost devices that interconnect wirelessly to collect, exchange, and sometimes act-on data collected from their physical environments - "sensor networks". Nodes typically connect in a star or mesh topology.
Most Bluetooth headsets implement both Hands-Free Profile and Headset Profile, because of the extra features in HFP for use with a mobile phone, such as last number redial, call waiting and voice dialing. The mobile phone side of an HFP link is Audio Gateway or HFP Server. The automobile side of HFP link is Car Kit or HFP Client.
In 2003, Plantronics introduced the CS50 wireless headset for use on office phones. Since that time, Plantronics has manufactured other wireless headsets, including the "CS70N", [11] CS500 Series, and Savi 700 Series. In recent years there has also been strong focus on Unified Communications headsets and speakers. [12]
To carry a typical phone call from a calling party to a called party, the analog audio signal is digitized at an 8 kHz sample rate with 8-bit resolution using a special type of nonlinear pulse-code modulation known as G.711. The call is then transmitted from one end to another via telephone exchanges.
A wireless home phone service is a service that allows a regular wired telephone to connect to a cellular network, as if it were a mobile phone. [ 1 ] [ 2 ] It is an example of a wireless last mile connection to the public switched telephone network , also known as a wireless local loop .
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Two cordless telephones 3 VTech cordless landline phones A Panasonic KX-TG2226B 2.4GHz cordless phone with answering machine. A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same ...