发明名称 System and method for completing two calls using analog interface to telephone network
摘要 The system and method of the present invention completes at least two calls originating from terminal equipment located at a premises and connected by a point-of-attachment having a single phone number to a public switched telephone network where a dial tone is provided to the premises. Multiple calls are now allowed with an analog interface to the public switched telephone network. At least two calls and control channel are combined into a modulated analog signal having a separate channel for each call and transmitted through a modulation/demodulation device as a modulated analog signal to the public switched telephone network. The modulated analog signal is split into respective calls and control channel. Each call is forwarded to a respective remote device based on the identity information and auxiliary information received through the control channel.
申请公布号 US6411695(B1) 申请公布日期 2002.06.25
申请号 US19990326887 申请日期 1999.06.07
申请人 AT&T CORPORATION 发明人 BURG FREDERICK MURRAY;SCHIANO ANTHONY;SHERIF MOSTAFA HASHEM;TEWANI KAMLESH T.
分类号 H04M11/06;H04Q3/00;H04Q5/02;(IPC1-7):H04M3/42;H04M7/00;H04M11/00;H04Q11/04 主分类号 H04M11/06
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