公开(公告)号：EP0880259A2

公开(公告)日：1998-11-25

申请号：EP98303936.3

申请日：1998-05-19

申请人： NORTHERN TELECOM LIMITED

发明人： Buchanan, Chris ,  Keilty, Dick ,  Wellard, Ron ,  Wong, Chi,Yin ,  Jenkins, Tim ,  Hibberd, Timothy Winston

IPC分类号： H04M9/00 ,  H04M7/12

CPC分类号： H04M9/002

摘要： A circuit arrangement is provided for connecting a personal computer (PC) to a port of a key telephone system via an adapter circuit which also interfaces a digital key set to the port. The adapter circuit is connected to the computer via an RS-232 single channel data link. The PC is programmed to generate and receive a serial data stream into which are encapsulated messages relating to link control and telephone functionality. The adapter circuit is also programmed to receive and generate the serial data stream. The data rate through the adapter circuit and the telephone system and hence to a remote computer is dependent on the utilization of the attached key set by the user to make a call.

摘要翻译： 提供了一种电路装置，用于经由适配器电路将个人计算机（PC）连接到密钥电话系统的端口，该适配器电路也将数字密钥集接口连接到端口。 适配器电路通过RS-232单通道数据链路连接到计算机。 PC被编程为生成和接收串行数据流，其中是与链路控制和电话功能有关的封装消息。 适配器电路也被编程为接收和生成串行数据流。 通过适配器电路和电话系统以及因此到远程计算机的数据速率取决于用户进行呼叫的附加密钥集的利用。