[asterisk-users] Maximum cable length for analog phone from FXS port

[asterisk-users at rogg.is]

Hello.

 

I am looking for details of the maximum allowed/usable/effective wire/cable
length of the connection from a FXS port of Digium analog cards to the
analog telephone handset.

 

To clarify my intention, I need to have an analog telephone connection to my
asterisk box that is 3000 meters (3km) away at least. If you have any
details of ATA boxes or other similar devices that I could use to do this,
I'd appreciate your input. It must be able to use a regular analog telephone
handset on the far end.

 

I've searched high and low and either I'm not clever enough in using the
right terms for this or it is rarely documented?

 

Any details much appreciated.

 

Thank you!

Baldvin

 

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