COMMUNICATION DEVICE
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United States of America Patent
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Issued Date -
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app pub date -
Jan 15, 2010
filing date -
Aug 29, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
When a communication route is established between SIP servers #1 and #3, an SIP server #2 performing a relay between the servers #1 and #3 receives an INVITE signal from the SIP server #1, not describing track information about the SIP server #2 in a Via header and a Record-Route header of the INVITE signal, but transferring the signal to the SIP server #3. Thus, after the transferred INVITE signal, the signal transmitted and received by the SIP servers #1 and #3, does not include the track information about the SIP server #2, thereby transmitting the signal without passing through the SIP server #2.
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