US PATENT SUBCLASS 455 / 466-- .~ Auxiliary data signaling (e.g., short message service (SMS))

US PATENT SUBCLASS 455 / 466
.~ Auxiliary data signaling (e.g., short message service (SMS))

Current as of: June, 1999
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455 /	HD	TELECOMMUNICATIONS

403	DF	RADIOTELEPHONE SYSTEM {12}
466		.~ Auxiliary data signaling (e.g., short message service (SMS))

DEFINITION

Classification: 455/466

Auxiliary data signaling (e.g., short message service (SMS)):

(under subclass 403) Subject matter including transmission of additional data messages which are nondestructive to voice communication.

(1) Note. Auxiliary data signaling is widely used in cellular digital packet data transmission (CDPD) or in short message service (SMS).

(2) Note. Nominal recitations of CDPD or SMS with significant radiotelephone system are classified herein. For significant CDPD or SMS, see SEARCH CLASS note below.

SEE OR SEARCH CLASS

370, Multiplex Communications,

328+, and 349 for cellular digital packet data transmission and subclasses 496 and 522 for signaling in a frequency division and time division multiplex communication system, respectively.