公开(公告)号：US4608685A

公开(公告)日：1986-08-26

申请号：US605721

申请日：1984-04-30

申请人： Prem C. Jain ,  Frederick Enns

发明人： Prem C. Jain ,  Frederick Enns

IPC分类号： H04Q11/00 ,  H04L12/64 ,  H04J3/02

CPC分类号： H04L12/64

摘要： A telecommunications network being operable as a packet switch and as a circuit switch is comprised of a plurality of units including a call controller unit. Each of the units is connected in common to data, address, and control leads of a bus, the data leads being commonly available for signal transmissions of both call control signals between the call controller unit and the other units and communications signals between calling and called ones of the other units. A bus controller is connected to the units by way of the address and control leads for arbitrating access to the data leads by the units, so that only one unit may transmit at any one time. The bus controller includes, a poll circuit for polling the units for asynchronous transmission requests, a grant circuit being responsive to the requests, for granting access to the data leads for an indefinite period of time as required for transmission of a data packet from one of the units, and a synchronous cycle circuit, being responsive to a synchronous request signal from any of the units, for generating a synchronous cycle signal for inhibiting data packet transmission and enabling synchronous data transmission via the data leads during a predetermined period of time.

摘要翻译： 电信网络可操作为分组交换机，并且作为电路交换机由包括呼叫控制器单元的多个单元组成。 每个单元共同连接到总线的数据，地址和控制线，数据线通常可用于呼叫控制器单元和其他单元之间的呼叫控制信号的信号传输以及呼叫和被叫之间的通信信号 其他单位之一。 总线控制器通过地址和控制线连接到单元，用于对单元的数据引导进行仲裁访问，从而只有一个单元可以在任何一个时间传输。 总线控制器包括：用于轮询异步传输请求的单元的轮询电路，响应于该请求的授权电路，用于根据数据包的发送所需的无限期的时间准许对数据引导的访问， 所述单元和同步循环电路响应于来自任何单元的同步请求信号，用于产生用于禁止数据分组传输的同步周期信号，并且在预定时间段内通过数据引线实现同步数据传输。

公开(公告)号：US4586175A

公开(公告)日：1986-04-29

申请号：US605722

申请日：1984-04-30

申请人： Charles J. Bedard ,  Prem C. Jain ,  Samuel F. Wood

发明人： Charles J. Bedard ,  Prem C. Jain ,  Samuel F. Wood

IPC分类号： H04L12/64 ,  H04J3/26

CPC分类号： H04L12/64

摘要： Data transactions and voice communications are facilitated in a packet switching system including a group of ports each of which is capable of exchanging inter-destined and intra-destined information signals via a packet bus. The packet bus is operated under the direction of a bus controller which communicates with the ports to arbitrate access to the packet bus for packet transmission. Arbitrating access to the packet bus for pseudo-synchronous and asynchronous signal communications includes the steps of polling the ports within a period of time for high and low priority, transmission requirements. In response to each high priority requirement transmission over a predetermined number of consecutive bus cycles is granted by the bus controller within a predetermined period of time for pseudo-synchronous transmission of signals from each of the corresponding ports one after another. In response to each lower priority requirement, transmission over an indefinite number of consecutive bus cycles is granted by the bus controller for asynchronous transmission of signals from at least one of the corresponding ports. The preceding steps are repeated with a frequency such that high priority grants occur at a uniform rate that is consistent with a sampling rate of digitized voice communications being divided by one less than the predetermined number of consecutive bus cycles.

摘要翻译： 在包括一组端口的分组交换系统中便于数据交易和语音通信，每个端口能够经由分组总线交换目的地和目的地信息信号。 分组总线在与端口通信的总线控制器的指导下操作以仲裁对分组总线的访问以进行分组传输。 对伪同步和异步信号通信的分组总线的仲裁访问包括在一段时间内轮询端口以实现高优先级和低优先级的传输要求的步骤。 响应于每个高优先级要求，总线控制器在预定时间段内允许在预定数量的连续总线周期上进行传输，以对来自相应端口中的每一个的信号进行伪同步传输。 响应于每个较低的优先级要求，总线控制器授权通过无限数量的连续总线周期进行的传输，用于来自相应端口中的至少一个的信号的异步传输。 重复前述步骤的频率使得高优先级授权以与数字化语音通信的采样速率相分离一致的均匀速率发生，该速率被除以比预定数量的连续总线周期少一个。