rotary dial telephone (thing) by ariels

Rotary dials generate DP dialing codes rather than DTMF. AT&T in the U.S.A. switched many years ago, with the result that rotary dial telephones are practically extinct there. However, the switch in Europe came at a much later date, with the result that many of these telephones are still in use.

In Israel, with the completion of the switch to digital switches (no pun intended), Bezeq announced that all rotary dial telephones are obsolete; this happened around 1997. However, you may still find these phones in some places, and DP is supported on all lines.

rotary dial	How to tell if your phone line supports DP dialing	Why don't people remember how to use rotary phones?	DTMF
DP	centrifugal friction device	Googlie-eyed objects	area code
Ditch your tone phone. Go rotary!	Webster and the case of the Zookeeper	Relative Capacity Occupancy	Laser Ranging Retroreflector experiment on the Moon
COCOT	August 19, 2011	Western Electric	Torturing your Sims
neo	Bell	August 9, 2012	A woman of her times
Touch tone telephone	Oswulf