Title:
TELEPHONE CIRCUIT SWITCHING
Document Type and Number:
Japanese Patent JPS52113608
Kind Code:
A
Abstract:
PURPOSE: To carry out the switching of connections at the exchange without interrupting services to the subscriber by putting in and pullout a circuit selection jack.
Inventors:
MAEDA CHIKAHIKO
Application Number:
JP3041776A
Publication Date:
September 22, 1977
Filing Date:
March 19, 1976
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
H04M3/00; H04Q3/00; (IPC1-7): H04M3/00