telephone theory
telephone theory
(OP)
hi all,
anyone could guide me to the theory of telephones, how they are connected from exchange to the set
anyone could guide me to the theory of telephones, how they are connected from exchange to the set





RE: telephone theory
RE: telephone theory
It used to be, the switching was electro-mechanical such as strowger being activated by pulses coming from the rotary telephone set. But nowadays everything is digital.
The exchange is the one giving you dial tones, busy tones, etc. and also connects to another exchange based on the three-digit numbers after the area code.
This is just a brief summary of the telephone system. If you need to know more, go and buy a book about telephony.