Method and system for routing and security for telephone calls over a packet-switched network
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United States of America Patent
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Mar 17, 2015
Issued Date -
N/A
app pub date -
Jun 11, 2012
filing date -
Jun 26, 1998
priority date (Note) -
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Abstract
A server, upon receiving a request to complete a call over a packet-switched network, looks up an address on the packet-switched network on a local table. If the local table does not contain a matching address, the server asks a routing server to identify a receiving server address. The routing server identifies a suitable address and sends a message to the originating server containing the address. The receiving server then receives, via the packet-switched network, a message requesting a telephone connection to a second telephone device. Before completing the connection to the second telephone device, information in the message representing the address of the device on the packet-switched network that originated the message is identified and the address information is compared to selected predetermined addresses for permitted origins of the message.
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