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Ericsson LM wall phone Circuit Diagram Dated 72-02-20

Started by TelePlay, January 30, 2021, 09:11:30 PM

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Nnice!It tells about how to connect to the terminals. 
I believe those phones was delivered with several circuit versions depending on the marked.

One diagram could have been equal or close to one of these:

Some versions had automatic line compensation connected to the ind. coil terminal 2 and 3, some had in addition to that a compensation shunted with the transmitter.