Re: [PLUG] Phone land line 'switching'

[bergman@merctech.com]

Good starting points for learning about the history & current state of US telephone service:

	https://www.google.com/search?q=north+american+number+plan+telephone
	https://www.google.com/search?q=ss7

Be sure to have a good supply of snacks & drinks on-hand before you dive down the rabbit hole.

Have fun. 

See you in about a week.

Mark "used to have way too much time and read too many Usenet posts on this stuff" Bergman
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