Circuit arrangement for use in telephone systems

Details Circuit arrangement for use in telephone systems Circuit arrangement for use in telephone systems

1977-11-29

1979-07-17

Robinson, Thomas A.

H04M 706

Patent

active

041616308

ABSTRACT:
An automatic telephone exchange including registers for the setting up of calls over outgoing junctions by multi-frequency code--(M.F.C.) signalling, in which the junctors are accessible via M.F. control equipments which are connected to the registers via crosspoint switching means.

REFERENCES:
patent: 3671677 (1972-06-01), Lee, Jr. et al.
patent: 3941938 (1976-03-01), Gauthier
patent: 4048450 (1977-09-01), Bernard et al.

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