Anyone here knows something about the telephone system?

[W_Heisenberg]

Any references or links?

I want the telephone from analog to nowadays.

Especially how the circuit inside work?

 

[goldsmith]

Hello
The circuits inside the telephones are simple . did you ever tried to do on off the telephone line ( short and cut ) . you will see that with this action you can get some numbers . it is the basic of all of the telephones . but you can find some other circuits inside the telephone , these days . for example auto pulser circuits , and voice processing Circuit ( todays , that circuit is in simple IC . ) ringer and the other circuits . so , do you want build a telephone with your self ? if yes , i should say that it is simple really , and i built a simple telephone with just one IC and some transistors , 4 years ago . if you want , i can attach here , it's circuit .
However you can design it simply , ( with a clock pulse oscillator and some transistors and a simple keypad)
Good luck
Goldsmith

 

[kak111]

This should be good start.....

Hundreds of wiring diagrams and documentation related to older telephones

Telephony Document Repository - The TCI Library
Telephone Collectors International - over 25 Years of Service to the Telephone Collector and Historian
Wiring Diagrams & Technical Library short list

Home page
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OLD TELEPHONES
How to Repair and
Rebuild Them
http://www.telephonetribute.com/pdf/rpr_ot21.pdf

actual schematics from some of the common antique telephones.
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Telephone Tribute Home Page

LINKS TO OTHER TELECOM RELATED SITES

 

[Syncopator]

You might also find something of interest here ePanorama.net - Links

 

[pico]

If you search in google with "understanding telephone electronics pdf", you will find the one you want.

 

[W_Heisenberg]

i am trying this now!

---------- Post added at 04:05 ---------- Previous post was at 04:04 ----------

Professional!

 

[W_Heisenberg]

this is impressive!!!!

man, you are so professional

---------- Post added at 20:37 ---------- Previous post was at 20:36 ----------

You might also find something of interest here ePanorama.net - Links

this is impressive!!!!

man, you are so professional