Devices whereby a plurality of signals may be stored simultaneously

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

Child Classifications

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• H04M 1/271
• H04M 1/272 with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
• H04M 1/274 with provision for storing more than one subscriber number at a time