公开(公告)号：US06700956B2

公开(公告)日：2004-03-02

申请号：US09517194

申请日：2000-03-02

Applicant: Tsung-Yen Dean Chang ,  Chuang Li ,  Chee Hin Ho ,  Bin Lang Gu

Inventor： Tsung-Yen Dean Chang ,  Chuang Li ,  Chee Hin Ho ,  Bin Lang Gu

IPC: H04M1100

CPC classification number: H04M1/2473 ,  H04M1/2535

Abstract: Apparatus and methods are provided for selectively providing telephone service that is either PSTN-based or Internet-based using a standard analog telephone circuit. In a first embodiment, the apparatus comprises a hardware module and associated software for coupling a personal computer or Internet appliance and a standard analog telephone. The apparatus includes a DTMF interface circuit, a subscriber line interface circuit, a ring detection circuit, and an interface circuit for interfacing with the PC or Internet appliance. The apparatus permits the analog telephone to be toggled between an Internet-based telephone mode and a PSTN-network mode by inputting a predetermined sequence of DTMF digits. In alternative embodiments, the apparatus comprises a processor, modem and optionally, analog telephone circuit, to provide a stand-alone or partially-integrated device capable of selectively switching between PSTN-based and Internet-based telephony services.

Abstract translation: 提供了设备和方法，用于选择性地提供使用标准模拟电话电路的基于PSTN或基于因特网的电话服务。 在第一实施例中，该装置包括用于耦合个人计算机或因特网设备和标准模拟电话的硬件模块和相关软件。 该装置包括DTMF接口电路，用户线路接口电路，环形检测电路和用于与PC或因特网设备进行接口的接口电路。 该装置允许通过输入预定的DTMF数字序列，在基于因特网的电话模式和PSTN网络模式之间切换模拟电话。 在替代实施例中，该装置包括处理器，调制解调器和可选的模拟电话电路，以提供能够在基于PSTN和基于因特网的电话服务之间选择性地切换的独立或部分集成的设备。

公开(公告)号：US06345088B1

公开(公告)日：2002-02-05

申请号：US09372418

申请日：1999-08-11

Applicant: Bin Lang Gu ,  Chuang Li

Inventor： Bin Lang Gu ,  Chuang Li

IPC: H04M1100

CPC classification number: H04M11/06 ,  H04M3/4281

Abstract: A modem that handles interruptions caused by call waiting signals is described. When the modem detects a call waiting signal, the modem alerts the user to the presence of the call waiting signal, and permits the user to answer the incoming call by taking a local phone that is connected to the modem off-hook. When the local phone is taken off-hook, the modem automatically generates a hook-flash signal to switch to the incoming call. When the user places the local phone back on-hook, the modem generates another hook-flash signal to resume (if possible) the modem connection. Additionally, the modem prevents a “fallback”, in which the modem switches from its current protocol to a lower-speed protocol, during a “retrain” process caused by a call waiting event.

Abstract translation: 描述了一种处理由呼叫等待信号引起的中断的调制解调器。 当调制解调器检测到呼叫等待信号时，调制解调器向用户通知呼叫等待信号的存在，并允许用户通过连接到调制解调器摘机的本地电话来接听来电。 当本地电话摘机时，调制解调器会自动生成挂机闪烁信号，以切换到来电。 当用户将本地电话放回挂机时，调制解调器产生另一个挂机闪烁信号，以恢复（如果可能）调制解调器连接。 此外，调制解调器在由呼叫等待事件引起的“再训练”过程期间阻止调制解调器从其当前协议切换到低速协议的“回退”。