TC systems

TC systems, or telecommunications systems, are switching systems that connect several telecommunications devices, such as phones, fax machines or answering machines, to each other and to the public telephone network. Other names for TC systems include telephone systems, private branch exchanges or switchboards. In international parlance, the term PBX (Private Branch Exchange) is most often used. Thanks to TC systems, connected phones can make internal calls free of charge, or be connected to the public telephone network by means of an exchange line. Outside lines, which usually come with a fee, can be used more efficiently, since not every end device requires its own exchange line. Depending on the total number of exchange lines that are available, a certain number of public phone calls can be made at the same time. Incoming calls can be forwarded automatically, depending on the system and configuration, either by means of a direct dial number to the appropriate extension, or manually by means of an attendant console.

IP telephone systems

Thanks to advances in technology and digitalisation, mechanical analogue systems have evolved into fully digitalised systems. Modern telephone systems use Voice over IP telephony (VoIP) and provide IP-based, analogue or digital connector ports for a wide range of devices. Devices can be connected to the TC system via a cable or by wireless means such as DECT or WiFi. Thanks to IP telephone systems, voice and data networks and their uses can merge to become one. 

Cloud telephone systems

Cloud telephone systems store the function of a telephone system in the network, and make local hardware for transmitting telephone conversations redundant. All that is required is a local internet connection with corresponding bandwidth. The maximum number of simultaneous conversations is, in theory, only dependent on the bandwidth of the particular internet connection. Users can access this system through a web browser and configure their requirements accordingly. A significant advantage of cloud systems is their flexible capacity for expansion. If you wish to connect additional locations or expand the capacity of the switchboard, this process is generally possible wholly through software, with no need for hardware at all.

Further information

Voice over IP

What is Voice over IP (VoIP)?
Voice over IP (VoIP) is the most common method for making phone calls over the internet. This is in contrast to traditional telephony, where communication is over the…

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Digital Enhanced Cordless Telecommunications, abbreviated to DECT, is the name of a standard for the wireless transmission of telephone calls or data.

DECT is often used for cordless telephony in…

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Private Branch Exchange (PBX)

Private Branch Exchange (PBX) is another term for a telephone system or an interphone network. It refers to a system connecting a specific number of communication devices such as phones or fax…

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The Internet allows computers, network-enabled devices or entire networks to access the Internet. The service comes from an internet service provider (ISP) and requires, depending on the access…

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Answering machine

An answering machine is able to accept missed calls and greet the caller with a personalised message. After the message is played it provides the option to leave a message which the called person can…

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