On 12/29/2015 09:30 PM, Christian Gauger-Cosgrove wrote:
Those pulses depend on what kind of crossbar you were
homing on, and
where you were calling.
I'm not entirely sure, but I think the local stuff was type 4XB. At any
rate, I could punch in a DTMF number and listen for the dialing sequence
to be complete before the first ring could be heard.
Then there was the matter the GTE-AT&T interconnect...