发明名称 |
METHODS AND APPARATUS FOR USE IN ESTABLISHING SESSION INITIATION PROTOCOL COMMUNICATIONS FOR VIRTUAL PRIVATE NETWORKING |
摘要 |
<p>A mobile communication device includes a wireless transceiver, one or more processors coupled to the wireless transceiver, memory, and a communications application stored in the memory. The communications application may be a VoIP telephony application which involves communication in accordance with a session initiation protocol (SIP). The one or more processors are operative to receive a public IP address assigned to the mobile device in a public network; cause a request for a virtual private network (VPN) connection with a private network to be communicated; refrain from registering with a SIP server for the communications using the public IP address; and if the VPN connection is established: receive a private IP address assigned to the mobile device for the VPN connection and cause a request for session registration using the private IP address to be communicated to a SIP server of the private network.</p> |
申请公布号 |
EP1864430(B1) |
申请公布日期 |
2009.07.08 |
申请号 |
EP20050763499 |
申请日期 |
2005.07.13 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
LAI, FREDERICK, CHEE-KIONG;NAGY, THOMAS, CHARLES |
分类号 |
H04L12/12;H04L29/06;H04W80/00 |
主分类号 |
H04L12/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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