专利名称：INTERNET PROTOCOL TELEPHONY WITH
VARIABLE-LENGTH CARRIER SYSTEMS
发明人：Christopher Pearce申请号：US14949283申请日：20151123
公开号：US20170149965A1公开日：20170525
专利附图：
摘要：First call identification information is stored at a network-connected device. Thefirst call identification information identifies a call between an initiating device connectedto an Internet Protocol (IP)-based network and a called device connected to the IP-
based network. The call identified by the first call identification information is establishedthrough a telephone carrier network. Second call identification information is stored inthe network-connected device. A determination is made that the first call identificationinformation and the second call identification information identify the call from theinitiating device to the called device. The call is connected through the IP-based networkso as to avoid the telephone carrier network based upon the determining that the firstcall identification information and the second call identification information identify thecall.
申请人：Cisco Technology, Inc.
地址：San Jose CA US
国籍：US
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