A portable communications and data terminal having multiple...

Details A portable communications and data terminal having multiple... A portable communications and data terminal having multiple...

H - Electricity

04

Q

H04Q 7/32 (2006.01)

Patent

CA 2170513

A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available in the handset, an analog cellular communication mode and a Cellular Digital Packet Data (CDPD) mode. A paging function for incoming analog cellular communication is carried out on a CDPD channel. The handset distinguishes between paging signals identifying CDPD mode communications and paging signals identifying analog cellular communications. The handset automatically preempts CDPD communications in favour of analog cellular communications such as those carried out in an AMPS configuration.

Un combiné radiotéléphonique portable présente l'aptitude à fonctionner comme un terminal de transfert de données ainsi que comme unposte téléphonique cellulaire analogique d'abonné. Deux modes de fonctionnement sont disponibles dans le combiné, un mode de communication cellulaire analogique et un mode de transmission numérique et cellulaire de données par paquets (CDPD). Une fonction de recherche de personnes destinée à la communication cellulaire analogique d'arrivée est effectuée sur une voie CDPD. Le combiné fait la distinction entre des signaux de recherche de personnes identifiant la communication en mode CDPD et des signaux de recherche identifiant une communication cellulaire analogique. Le combiné donne automatiquement la priorité aux communications cellulaires analogiques, telles que celles effectuées selon une configuration de service téléphonique mobile évolué (AMPS), par rapport aux communications CDPD.

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