H04M3/42—Systems providing special services or facilities to subscribers
H04M3/487—Arrangements for providing information services, e.g. recorded voice services or time announcements
H04M3/4872—Non-interactive information services
G—PHYSICS
G08—SIGNALLING
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B5/00—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
G08B5/22—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission
G08B5/221—Local indication of seats occupied in a facility, e.g. in a theatre
Landscapes
Physics & Mathematics
(AREA)
Electromagnetism
(AREA)
General Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Management, Administration, Business Operations System, And Electronic Commerce
(AREA)