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Method to Quickly Establish Voice Group Calls in Areas without Radio Coverage Disclosure Number: IPCOM000021467D
Original Publication Date: 2004-Feb-25
Included in the Prior Art Database: 2004-Feb-25

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The ASCI (Advanced Speech Call Item) features enable voice group calls using predefined groups and Group IDs, but these can only be established in an area where radio coverage is ensured. By using mobile BTS/BSC (Base Transceiver Station/Base Station Controller), voice group calls can also be established outside these areas. Because such a mobile BTS/BSC can have a reduced switching functionality, it can be designed smaller and more compact than stationary ones, so that it can be carried by a vehicle (for example a car or helicopter). A limited number of BTS can be linked up to form a small network. The proposed method is particularly advantageous for emergency operations or for moving group call areas.