Communication system, terminal device and communication control device
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United States of America Patent
Stats
-
Apr 30, 2013
Grant Date -
Mar 31, 2011
app pub date -
Sep 20, 2010
filing date -
Sep 30, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A communication system including a communication control device connecting to an external network, a NAT device connecting to the external network, and a terminal device connecting to an internal network under control of the NAT device, the terminal device including a NAT information identification portion, a NAT information transmitting portion that transmits NAT type information to the communication control device, a type request transmitting portion, a type response receiving portion that receives the NAT type information transmitted from the communication control device in response to the type request signal, and a first communication portion that performs communication with another terminal device using the received NAT type information, the communication control device including a NAT information receiving portion, a storage control portion that stores the received NAT type information in a storage device, a type request receiving portion, and a type response transmitting portion that transmits the stored NAT type information.
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