Still minorly off-topic, but I worked for New England Telephone from '79 to '84, when the old Bell System broke up. In addition to my regular work, I handled requests for mobile phone (radio-telephone) service in western Massachusetts and Vermont. The control head with the handset could mount under the dash, but the main equipment box had to go in the trunk. It was a lot like the mobile phones that "Jonathan and Jennifer Hart" used in the TV show Hart to Hart.
We did have an option for limited direct dialing, but nearly all mobile phones -- in my territory, anyway -- were half-duplex. I talk, pause, then you can talk, pause, then I can talk again.
Last edited by cromag; 04-17-2016 at 09:59 PM.
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