H
ELECTRICITY
H
ELECTRICITY
H04
ELECTRIC COMMUNICATION TECHNIQUE
H04
ELECTRIC COMMUNICATION TECHNIQUE
H04W
WIRELESS COMMUNICATION NETWORKS
H04W
WIRELESS COMMUNICATION NETWORKS
H04W68/00
User notification, e.g. alerting and paging, for incoming communication, change of service or the like
H04W68/00
User notification, e.g. alerting and paging, for incoming communication, change of service or the like