| 摘要 |
A communication device that allows a proxy reception device to perform proxy reception of data directed to the communication device. The communication device establishes a SIP protocol-based session through a call controller connected to a network and performs data communication. The communication device holds proxy reception device destination information representing an IP address of the proxy reception device that performs proxy reception of data transmitted to a SIP URI of the communication device, and registers, into the call controller, registration information comprised of communication device destination information and proxy reception device destination information according to which the communication device sends proxy reception instruction information that instructs to perform proxy reception to the proxy reception device.
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