does any one have the specs. for the door box spkr required for the old 308 easa-phone system?..45 ohms?...8?

Thanks, Dave

Dave, you really need to use Panasonics KX-T 30865 intercom station. There is other IC in there then just a push button and speaker.
The module that plugs into the little switch is a KX-T30860D and it connects to the door stations with a 4 pair Mod. line cord.

Dave, this link may help you.
Type in: KX-T30865 under model #

https://www.pasc.panasonic.com/epartr/

i see what you mean....thanks