公开(公告)号：US3920912A

公开(公告)日：1975-11-18

申请号：US48600374

申请日：1974-07-05

Applicant: BELL TELEPHONE LABOR INC

Inventor： ANDERSON HAROLD PETER ,  NIELSON CARL CALVIN

IPC: H04M15/04 ,  H04M15/10

CPC classification number: H04M15/04

Abstract: An arrangement for electronically recording and displaying charges for calls made from station lines of a hotel or motel PBX is disclosed which eliminates the use of the prior art banks of electromechanical message registers. An electronic memory unit is accessed when a call is made and the number of the calling station is entered into a trunk memory word. When the central office sends message charging pulses to the PBX, the trunk word is accessed and the station number is read out. The station number then addresses the memory and the message count accruing in a memory byte assigned to the station word is incremented. Thereafter, the hotel clerk by dialing a prefix code and the station line number may obtain a display of the message count or dollar charges accruing for the station.

公开(公告)号：US3701854A

公开(公告)日：1972-10-31

申请号：US3701854D

申请日：1970-12-21

Applicant: BELL TELEPHONE LABOR INC

Inventor： ANDERSON HAROLD PETER ,  FENTON FRANCIS MICHAEL

IPC: H04M9/00 ,  H04M1/00

CPC classification number: H04M9/007

Abstract: An electronic key telephone system is disclosed in which each key telephone set is equipped with a multifrequency call signaling push-button dial as well as a number of line pick-up keys. Regardless of the number of pick-up keys on a set, it is connected to the local key system via only a single pair of tip and ring conductors and a data link. The identity of an operated pick-up key is transmitted to the local key system over the data link. The multifrequency call signaling dial is modified to generate the normal multifrequencies and in addition is connected to a digital encoder to transmit the identity of an operated call signaling push button over the data link when a certain pick-up key is operated. The local telephone system thus may dispense with the need for analog tone signaling receivers and can employ the operated push buttons for call signaling purposes in the digital mode. The station user is assured that his call signaling push buttons are operating correctly when the set is transmitting digital call signaling information to the local key system because the side tones of the multifrequency signals will be audible.

Abstract translation: 公开了一种电子钥匙电话系统，其中每个钥匙电话机配备有多频呼叫信令按钮拨盘以及多个线路拾取钥匙。 无论集合中的拾取密钥数量如何，它只通过一对尖端和环形导体和数据链路连接到本地密钥系统。 操作的拾取密钥的身份通过数据链路传输到本地密钥系统。 多频呼叫信令拨号被修改以产生正常的多频，并且另外连接到数字编码器以在操作某个拾取键时通过数据链路发送操作的呼叫信令按钮的标识。 因此，本地电话系统可以省去对模拟音频信令接收机的需要，并且可以在数字模式中使用用于呼叫信令目的的操作的按钮。 当用户正在向本地密钥系统发送数字呼叫信令信息时，确保他的呼叫信令按钮正常工作，因为多频信号的侧音将是可听见的。