ePanorama telecom documents
This document describes how telephone works and how you cain interface to telephone line. This document describes also telephone line technical details.This document describes how ADSL filters work and why they are needed.This document describes telephoen line ring signal details, and gives circuit ideas how to generate and detect telephone rign signals.Information about caller identification circuitsBellcore Caller ID specificationInformation about coilsFax to Modem interfaceSometimes coils with large inductance is needed in telecommunication systems and filters. Coils with inductance of many henries are not usually very useful in modern small electronics circuits. To overcome there is one solution which can be used in many applications: simulate the behauvior of coils using electronics.Very simple intercom circuitHow to record telephone conversationsTelephone line surge protectionTelephone wiring in UKu-LAW and A-LAW definitionsWhat are DTMF tones and how to generate then using software algoriths.
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