with provision for storing more than one subscriber number at a time

Full Title

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 more than one subscriber number at a time

Child Classifications

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• H04M 1/2745 using static electronic memories, e.g. chips
• H04M 1/276 using magnetic recording, e.g. on tape
• H04M 1/278 using punched cards or tapes