Patent ID: 8649301
Filing Date: 2014-02-11
Classification: H04M

Abstract:
1. A method for wireless, digital radio communication utilizing Digital Enhanced Cordless Telecommunications (DECT) standard on multiple channels between multiple users, comprising providing the multiple channels including at least one listen channel and a plurality of outgoing speech channels, wherein all users are permitted to listen on the at least one listen channel which is associated with a first base unit and each user is allocated an outgoing speech channel when such user initiates a speech transmission, provided that once every available outgoing speech channel has been allocated to a user, an additional user who initiates a speech transmission will be allocated the outgoing speech channel of the user who has been inactive for the longest time, and wherein the first base unit sum totals speech transmission signals received from transmitting users as a sum totaled signal and transmits the sum totaled signal on the at least one listen channel, and wherein the first base unit is automatically synchronized with other base units within its range whereby a listen channel common to the first base unit and the other base units is established such that the users of each base unit are permitted to listen to the common listen channel.