Appeal No. 2000-2237
Application 08/723,712
portable phones which can communicate in either a cellular mode
of operation or a cordless mode of operation.
The invention uses only one transceiver per portable handset
wherein that transceiver operates in accordance with two
protocols, one protocol being a standard cellular protocol and
the other being a cellular compatible protocol that permits
dynamic channel allocation and occupancy. In contrast to
conventional cellular protocols, a local base station does not
continually broadcast an overhead data stream on a control
channel, but rather, each handset engages in a cordless mode
registration session by transmitting a reverse channel message
initiated by the handset without receiving a corresponding
forward channel message.
Independent claim 1 is reproduced as follows:
1. A multiple mode telecommunications system which uses
communication facilities, said system comprising:
a portable handset with a single transceiver capable of
operating in accordance with first and second wireless control
protocols, said first protocol having a post-activation
registration session initiated by said handset transmitting a
reverse channel message without receiving a corresponding forward
channel message, and said second protocol having a post-
activation registration session initiated by said handset
2
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