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
H04M7/0024
Services and arrangements where telephone services are combined with data services
Load children Filter patents View analytics View as hierarchy
H04M7/0036
where the data service is an information service
Filter patents View analytics View as hierarchy