[GreenKeys] Teletype signalling (Loop) cable...

[David Christ]

Right. Actually, the blue pair is connected to pins 4-5 in an RJ45 modular connector.  This is not unusually intended for phone use.  With Ethernet on pins 1-2-3-6 you won’t have a conflict between a regular phone and ethernet and can run only one 4 pair cable for both.

David K0LUM


On Sep 30, 2015, at 10:36 PM, Gil Smith <gil at baudot.net> wrote:

> CAT-5 and 5e (and even 6) are more likely to be found in home depot;  though designed for low-voltage network and similar use, I suspect they are also spec'd for the voltage range of phone applications.

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