IPIQ

ELECTRICITY

H04

ELECTRIC COMMUNICATION TECHNIQUE

H04M

TELEPHONIC COMMUNICATION

1/00

Substation equipment, e.g. for use by subscribers

H04M1/26

Devices for calling a subscriber

H04M1/27

Devices whereby a plurality of signals may be stored simultaneously

H04M1/274

with provision for storing more than one subscriber number at a time; , e.g. using toothed disc

H04M1/2745

using static electronic memories, e.g. chips

H04M1/27453

Directories allowing storage of additional subscriber data, e.g. metadata