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公开(公告)号：US6046995A
公开(公告)日：2000-04-04
申请号：US84190
申请日：1998-05-26
申请人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
发明人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
CPC分类号： H04L5/1492 , H04M9/002
摘要： A multi-line key telephone system not having a key service unit includes three analog telephone lines to which multiple telephone stations may be connected for enhanced communications between stations. Each station is connected by a modem to a single telephone line and includes a Universal Asynchronous Receiver Transmitter (UART) communicating with the modem, a microprocessor and a digital signal processor for effecting voice and data transfers and communicating time division multiplex protocol control to another telephone station on the same line. The UART includes a synchronizer with a master clock for defining positions of voice and data packets within a TDM frame having a predetermined data bit structure, and a receiver for acquiring a first valid packet header and start bit and issuing a sync pulse to adjust the master clock to conform to the timing of a new communication session. A receive data register in the UART temporarily stores data packets indexed to a first position within a TDM frame, and a receive voice buffer accumulates and temporarily stores voice packets indexed to a second position within the TDM frame. Transmitted data and voice packets are initially accumulated and stored as data and voice bytes in respective transmit data and voice registers of the UART from which the bytes are coupled to a transmitter for packetizing and subsequent transmission to the telephone line via the modem under control of the synchronizer.
摘要翻译： 没有密钥服务单元的多线密钥电话系统包括三个模拟电话线，多个电话台可以连接到这些电话线，用于站间的增强通信。 每个站通过调制解调器连接到单个电话线，并且包括与调制解调器通信的通用异步收发器（UART），微处理器和数字信号处理器，用于进行语音和数据传输以及将时分复用协议控制传送到另一个电话 站在同一条线上。 UART包括具有主时钟的同步器，用于定义具有预定数据位结构的TDM帧内的语音和数据分组的位置，以及用于获取第一有效分组报头和起始位并发出同步脉冲以调整主机的接收机 时钟以符合新的通信会话的时间。 UART中的接收数据寄存器临时存储索引到TDM帧内的第一位置的数据分组，并且接收语音缓冲器累积并临时存储索引到TDM帧内的第二位置的语音分组。 发送的数据和语音分组最初被累积并作为数据和语音字节存储在UART的相应发送数据和语音寄存器中，字节从该数据和语音寄存器耦合到发送器，用于经由调制解调器进行打包和随后的传输， 同步器
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公开(公告)号：US5787115A
公开(公告)日：1998-07-28
申请号：US579967
申请日：1995-12-28
申请人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
发明人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
CPC分类号： H04L5/1492 , H04M9/002
摘要： A multi-line key telephone system not having a key service unit includes three analog telephone lines to which up to eight, three-line telephones may be connected to provide enhanced service features with cost-effectiveness. System reliability is maintained, notwithstanding the power dependency of the telephones, by including POTS telephones to provide uninterrupted essential telephone service in the event of a power outage. Both data and voice communications between two or more of the three-line telephones is achieved by converting an input digital bit stream from either a digital or analog source into a corresponding out-of-band binary FSK radio frequency output signal that is transceivingly communicated between the three-line telephones as data packets within a TDM frame. The out-of-band signal thus permits analog voice communications on the same line to proceed without interference. A telephone initiating a communications session acts as a master station, establishing inter-station communications synchronous at the frame level and asynchronous at the packet level. The called telephone functions as a slave station in a second time slot synchronized to a first time slot in the TDM frame received from the master. Temporary storage of data in firmware buffers and controlled timing at both the master and slave permits these stations to function within their respective TDM frame time slots.
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公开(公告)号：US6072826A
公开(公告)日：2000-06-06
申请号：US84193
申请日：1998-05-26
申请人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
发明人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
CPC分类号： H04L5/1492 , H04M9/002
摘要： A multi-line key telephone system not having a key service unit includes three analog telephone lines to which up to eight, three-line telephones may be connected to provide enhanced service features with cost-effectiveness. System reliability is maintained, notwithstanding the power dependency of the telephones, by including POTS telephones to provide uninterrupted essential telephone service in the event of a power outage. Both data and voice communications between two or more of the three-line telephones is achieved by converting an input digital bit stream from either a digital or analog source into a corresponding out-of-band binary FSK radio frequency output signal that is transceivingly communicated between the three-line telephones as data packets within a TDM frame. The out-of-band signal thus permits analog voice communications on the same line to proceed without interference. A telephone initiating a communications session acts as a master station, establishing inter-station communications synchronous at the frame level and asynchronous at the packet level. The called telephone functions as a slave station in a second time slot synchronized to a first time slot in the TDM frame received from the master. Temporary storage of data in firmware buffers and controlled timing at both the master and slave permits these stations to function within their respective TDM frame time slots.
摘要翻译： 没有密钥服务单元的多线密钥电话系统包括三个模拟电话线，多达八个三线电话可以被连接到，以提供具有成本效益的增强的服务特征。 通过在停电的情况下，通过包括POTS电话来提供不间断的基本电话服务，尽管电话机的功率依赖性仍保持系统的可靠性。 通过将来自数字或模拟源的输入数字比特流转换成相应的带外二进制FSK射频输出信号来实现三线电话中的两个或更多个之间的数据和语音通信， 三线电话作为TDM帧内的数据分组。 因此，带外信号允许同一线路上的模拟语音通信不受干扰地进行。 发起通信会话的电话充当主站，在帧级别建立同步的站间通信，在报文级别进行异步。 被叫电话在与从主设备接收的TDM帧中的第一时隙同步的第二时隙中用作从属站。 固件缓冲区中的数据临时存储和主机和从机的受控定时允许这些站在各自的TDM帧时隙内工作。
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公开(公告)号：US06940959B1
公开(公告)日：2005-09-06
申请号：US09522743
申请日：2000-03-10
CPC分类号： H04M1/6505 , H04M1/57 , H04M1/642
摘要： A local CPE broadcasts incoming call information to at least one remote CPE. Before or after at least one ring tone is received, the local CPE is taken off-hook. An incoming voice message is received, and the incoming voice message is broadcast over a communications network to the remote CPE. Alternatively, incoming caller data is received, a corresponding voice message is determined as a function of at least a portion of the incoming caller data, and the voice message is broadcast over a communications network to the remote CPE. As a further alternative, the caller data is broadcast over the communications network, and the corresponding voice message is determined by the remote CPE. As yet another alternative, incoming call information is announced using on-hook customer premises equipment (CPE). An indication of an incoming CPE alerting signal (CAS) tone is received, a frequency shift keying (FSK) signal is detected as a result of receiving the indication. A corresponding voice message is determined as a function of at least a portion of the FSK signal, and the voice message is announced.
摘要翻译： 本地CPE将来电信息广播到至少一个远程CPE。 在收到至少一个铃声之前或之后，本地CPE摘机。 接收到传入语音消息，并且通过通信网络将传入语音消息广播到远程CPE。 或者，接收来话呼叫者数据，根据来话呼叫者数据的至少一部分确定对应的语音消息，并且通过通信网络将语音消息广播到远程CPE。 作为另一替代方案，通过通信网络广播呼叫者数据，并且相应的语音消息由远程CPE确定。 作为另一替代方案，使用挂机客户端设备（CPE）来公布来电信息。 接收到进入的CPE警报信号（CAS）音的指示，作为接收到该指示的结果，检测到频移键控（FSK）信号。 作为FSK信号的至少一部分的函数确定对应的语音消息，并且声明语音消息。
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公开(公告)号：US6088362A
公开(公告)日：2000-07-11
申请号：US84167
申请日：1998-05-26
申请人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
发明人： Robert Turnbull , David Westergaard , Bruce W. Yee , Michael J. Lucas , Alan D. Eyre , Brian McKinney
CPC分类号： H04L5/1492 , H04M9/002
摘要： A multi-line key telephone system not having a key service unit includes three analog telephone lines to which up to eight, three-line telephones may be connected to provide enhanced service features with cost-effectiveness. System reliability is maintained, notwithstanding a power dependency of the telephones, by including POTS telephones to provide uninterrupted essential telephone service in the event of a power outage. Both data and voice communications between two or more of the three-line telephones is achieved by converting an input digital bit stream from either a digital or analog source into a corresponding out-of-band binary FSK radio frequency output signal that is transceivingly communicated between the three-line telephones as data packets within a TDM frame. The out-of-band signal thus permits analog voice communications on the same line to proceed without interference. A telephone initiating a communications session acts as a master station, establishing inter-station communications synchronous at the frame level and asynchronous at the packet level. The called telephone functions as a slave station in a second time slot synchronized to a first time slot in the TDM frame received from the master. Temporary storage of data in firmware buffers and controlled timing at both the master and slave permits these stations to function within their respective TDM frame time slots.
摘要翻译： 没有密钥服务单元的多线密钥电话系统包括三个模拟电话线，多达八个三线电话可以被连接到，以提供具有成本效益的增强的服务特征。 尽管电话机具有电力依赖性，但是通过在停电的情况下包括POTS电话来提供不间断的基本电话服务，保持系统的可靠性。 通过将来自数字或模拟源的输入数字比特流转换成相应的带外二进制FSK射频输出信号来实现三线电话中的两个或更多个之间的数据和语音通信， 三线电话作为TDM帧内的数据分组。 因此，带外信号允许同一线路上的模拟语音通信不受干扰地进行。 发起通信会话的电话充当主站，在帧级别建立同步的站间通信，在报文级别进行异步。 被叫电话在与从主设备接收的TDM帧中的第一时隙同步的第二时隙中用作从属站。 固件缓冲区中的数据临时存储和主机和从机的受控定时允许这些站在各自的TDM帧时隙内工作。
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