公开(公告)号：EP0570776A1

公开(公告)日：1993-11-24

申请号：EP93107412.4

申请日：1993-05-07

申请人： ALCATEL AUSTRALIA LIMITED

发明人： Jamons, Nicholas ,  Thompson, Ian Edward

IPC分类号： H04M17/00 ,  H04M17/02

CPC分类号： H04M15/88 ,  H04M1/673 ,  H04M15/28 ,  H04M17/00 ,  H04M17/02 ,  H04M2215/0116 ,  H04N1/34

摘要： A method and apparatus for providing a controlled credit facility in a telephone subset. The subset is provided with a central processing unit (CPU) (3) and a keypad (4). The CPU is programmed by the proprietor of the subset with the keypad. After validation of a personal identification number, the proprietor can enter data representing a predetermined credit limit in a memory of the CPU. A client may then establish a connection via the PSTN using the subset. When the connection is established the CPU deducts stored charge unit data from the memory at predetermined periods until the credit limit is reached, whereupon the CPU disconnects the subset from the PSTN.
The subset may be coupled to a facsimile machine and the controlled credit facility used by a client for facsimile transmissions.

摘要翻译： 一种用于在电话子集中提供受控信用设施的方法和装置。 该子集设置有中央处理单元（CPU）（3）和键盘（4）。 CPU由子板的所有者用键盘编程。 在验证个人识别号码后，所有者可以在CPU的存储器中输入表示预定信用额度的数据。 客户端然后可以使用子集通过PSTN建立连接。 当建立连接时，CPU以预定的时间间隔从存储器中扣除存储的充电单元数据，直到达到信用限制，于是CPU将该子集与PSTN断开连接。 该子集可以耦合到传真机和由客户端用于传真传输的受控信用设施。