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He meant leakage currentAlitex: answered in another forum.
Boncuk: What is "false terminating resistance"![]()
a faulty situation is different from user manipulation. telcos wont generally bother, but when it lands into complaints like ring tripping but call not thro', they checkI believe by 'false' he means that it's unexpected resistance for a telephone.
Makes you wonder what happens if the phone socket has a short in it? You get fined anyway?
It's illegal to use telephone power for any other application than the telephone.
Telephone lines also carry internet data and a false terminating resistance will be detected and located at the telephone company.
Fines are considerably high for misuse of telephone lines.
Boncuk
Alitex: answered in another forum.
Boncuk: What is "false terminating resistance"![]()
I believe by 'false' he means that it's unexpected resistance for a telephone.
Makes you wonder what happens if the phone socket has a short in it? You get fined anyway?
Accidental Vs deliberate is different.
If you cant afford a battery you cant afford the phone connection or the resulting fine if caught using the lines for a power source.
Use a rechargeable battery and a solar panel. The size needed for your application would be rather small. And likely cost about the same as what a building a very small and efficient switching power supply would cost any way .
My parents bought a solar-powered lamp (irony alert) the other day for £5: came with three (low-capacity) NiMH AA batteries, and a 4-inch square solar panel to charge them. Not sure what the rating of the panel is, I have a feeling I'd be attacked with it if I took it apart to check![]()
... ring tripping but call not thro', ...
A CID is an LCD device (very low power) and telco approved (it'll have a telco sticker)
when we try to take small currents from telephone line, the exchange would rather neglect till it touches the limit set for leakage.Hello mvs sarma. What does this mean ?
The limit varies with the equipment manufacturer and it is meant as guard for leakage across the limbs, due to low insulation. for example e10B and their latest designs from Alcatel it around 4 mA.Hi.
If 1 mA; or 5 mA or more are taken from the on-hook telephone line, nothing will happen if the dial tone is not present and the incoming call will ring with no problem.
Only when the current taken from the telephone line exceeds the treshold to engage the central office relays, usually around 18 mA, then the dial tone and the busy tone are enabled and the ringen disabled by the relay contacts, preventing an incoming call from passing trough.
Modern central offices may not use true relays in their linecards, but the functionality persists the same, and some automated test may flag a current being taken as a failure, a leak, or an intentional load.
Miguel