Method for setting up a communication connection and private branch exchange for carrying out the method
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United States of America Patent
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Aug 28, 2012
Grant Date -
Apr 2, 2009
app pub date -
Sep 22, 2008
filing date -
Sep 24, 2007
priority date (Note) -
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Abstract
A communication connection between a calling communications terminal and a further communications terminal, the connection setup being initiated through the exchange of an invite message and a number of acknowledgment messages between the calling communications terminal, the further communications terminal and a higher-ranking communication-management module, the connection modalities relevant for the calling communications terminal being agreed in a first connection initiation sequence between the higher-ranking communication-management module and an application-management module allocated to the calling communications terminal, and a second connection initiation sequence being provided for agreeing the connection modalities relevant for the further communications terminal between the higher-ranking communication-management module and an application-management module allocated to the further communications terminal.
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