Padu wrote:
> Humnn.... not sure wich tag is more appropriate, feel free to change if you think this is not related to [PIC]
> 
> Basically I want to interface a PIC with my digital telephone line. What I envision is a simple device that monitors the digital line and detects when the phone goes on-hook or off-hook. Is there such a thing as a standard between major manufacturers? If not, do they use a common electrical interface at least?  I'd also appreciate if you have any pointers on basic concepts of how digital lines work, preferentially at the electrical level.
> 
> Cheers
> 
> 
> Padu

What do yoou mean by "digital phone line"
Connected to a local PBX/KEY system?
-those formats are typically proprietary
D

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