pulse dialling
noun[U]
COMMUNICATIONSukus(alsoUSpulse dialing)asystemthat is used to make aconnectionwith thetelephonelinebyinterruptingacontinuoussignal. In manypartsof theworldpulsediallinghas beenreplacedbytonedialling:
Modernequipmentwillallowswitchingbetweenpulseandtonediallingmodes.
Compare
tone dialling