Re: Interconnecting old telephones?
I am not sure about that Panasonic, but the KX-T616 or KX-T308 are suitable.
I would not give it up before some simple testing.
The Panasonic uses a RJ11 or RJ12 jack. In the jack the 2 center pins are the interesting ones. This is the line just as the pair coming in to your house if you have an old telephone line.
For most other countries this is enough, but in UK you have had a master socket splitting up to 3 wires via a capacitor. This capacitor are inside the telephone in other countries, and in really old UK phones.
If your older phones has the capacitor, it might be enough to connect a link inside your phone, If it hasn't just ad the capacitor. Most phones will be OK with a 1 microfarad non-polarized capacitor rated to at least 200V
Pictures of the inside and schematics if you have will help us to help you.
If you do not think you get the help you need here, google for classicrotaryphones forum.
dsk
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