with provision for storing only one subscriber number at a time, e.g. by keyboard or dial

Substation equipment, e.g. for use by subscribers > Devices for calling a subscriber > Devices whereby a plurality of signals may be stored simultaneously > with provision for storing only one subscriber number at a time, e.g. by keyboard or dial

Substation equipment, e.g. for use by subscribers (subscriber services or facilities provided at exchanges H04M3/00; prepayment telephone coin boxes H04M17/00; current supply arrangements H04M19/08) > Devices for calling a subscriber (H04M1/66 takes precedence) > Devices whereby a plurality of signals may be stored simultaneously > with provision for storing only one subscriber number at a time, e.g. by keyboard or dial