[comp.dcom.telecom] Common Courtesy When Using Pulse/Touch-Tone Phones

Carl Moore (VLD/VMB) <cmoore@brl.mil> (07/13/90)

I sent a very recent message about pulse/touch-tone switch.  If the
line is pulse (NOT touch-tone), and you then use touch-tone inputs on
that phone after dialing the number you want, please put the phone
back in pulse mode when you are done.