ePanorama Documents - Telecommunications
Information about caller identification circuits
Bellcore Caller ID specification
Information about coils
Fax to Modem interface
Sometimes 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 circuit
How to record telephone conversations
Telephone line surge protection
Telephone wiring in UK
u-LAW and A-LAW definitions