Telecommunication equipment

There are many devices used in telecommunications. Consumer appliances include:

• telephones and fax machines;

• mobile phone devices, paging systems and radios;

• internal communication devices, including dispatchers, secretarial and directorial, loud-talking, for special services, Intercoms;

• accessories.

In addition to ordinary telephones, you can also find equipment additionally enriched with various functions. Telephones may be equipped with:

• built-in speaker and microphone, allowing you to make calls with the handset away;

• number programming and speed dialing system with the ability to repeat the last selected number;

• electronic locking lock,

• control of the way of ringing and volume',

• digital answering machine, enabling digital recording of several minutes of conversation;

• number display;

• electronic alarm clock, Book, call counter and other functions.

The group of telephones can also include cordless phones, constructed using digital technologies. Such phones consist of the so-called. a base station and headphones or several headphones that work with the base station. Such a system allows you to make calls between headphones, call forwarding, group calling and signaling of the second incoming call. The range of the system is usually approx.. 50 m, while in the open area to 300 m. Such a system can be additionally expanded and equipped with a variety of functions. It can also be used as an internal communication system.

Mobile phone devices can work in an analog or digital system. Thanks to digital signal transmission less susceptible to interference and the use of digital signal processing technology, guaranteeing high quality of reception, digital telephony is gradually replacing analog telephony.

Different models of mobile phones can vary in coverage, which is due to the output power of the camera. In areas of the country, less covered by a mobile phone network, this parameter determines the connection. Mobile phones come standard with many features.

The range of accessories mainly concerns mobile telephony. These accessories include: mains and car chargers, for periodic charging of batteries, on telephones, appetizers (Interfaces) for connecting the fax machine, speakerphones, car kits, Antenna, headphones and others.