Patent classifications
H
ELECTRICITY
Load children
H04
ELECTRIC COMMUNICATION TECHNIQUE
Load children
H04M
TELEPHONIC COMMUNICATION
Load children
7/00
Arrangements for interconnection between switching centres
Load children Filter patents View analytics View as hierarchy
H04M7/06
using auxiliary connections for control or supervision; , e.g. where the auxiliary connection is a signalling system number 7 link
Load children Filter patents View analytics View as hierarchy