[comp.dcom.telecom] Is There a History of Direct Distance Dialing?

gabe@sirius.ctr.columbia.edu (Gabe Wiener) (02/18/91)

Recently, the Digest carried a wonderfully informative article on the
history of the two-letter exchange names.

Has anything of that sort ever appeared regarding the history of DDD?
If not, could someone in the know post a brief synopsis of its
history?


Thanks,

Gabe Wiener - Columbia Univ.  gabe@ctr.columbia.edu        
gmw1@cunixd.cc.columbia.edu   72355.1226@compuserve.com