Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 240 z 288

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Access the Inter- net via separate modem. Telephone systems In many cases, modern telephone systems also act as interfaces for number different data services, e. Because the analogue connection without technical accessories provides only one channel, the Internet cannot accessed while telephoning and likewise, telephone call is possible while surfing.2. ISDN (Integrated Services Digital Network System) In contrast the analogue connection, ISDN allows two conversations take place the same time via a special bus system (S0 bus), which provides two channels.g. there are now number different systems, these devices must have selective protec- tion. Many terminal devices that enable this ac- cess are connected into the lines themselves and must integrated into the surge protection concept accordingly. That includes everything from high-speed transmissions via optical fibre sending simple fax. Standard analogue connection Unlike other systems, the standard analogue connec- tion offers additional services. the Internet. There are three distinctly different essential sys- tems.3 Telecommunications Today, telecommunications are used all kinds dif- ferent applications. ISDN also offers other services such as call waiting, callback, etc. Many people associate the term “telecommunications” only with the traditional tele- phone, but the spectrum much broader. Telecom- munication means the transmission, over substantial distance, any kind information via technical infra- structures. TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 240 Chapter The internal lightning protection system . This enables the user surf the Internet while telephoning and higher data rates than pos- sible with the analogue connection (64 kBit/s over one channel).Protection ISDN DSL connection with TeleDefender 3.3