JPS62279765A - Extension call signal system - Google Patents

Abstract

PURPOSE:To identify from whom an incoming call arrives before responding to a telephone, in case of connecting extensions mutually, by changing and sending the cycle of a call signal according to the accommodate position of a call extension. CONSTITUTION:At the time of dialing an extension 2 to be called by an ordinary procedure by a call extension 1, a central processing unit 4 reads out a call signal pattern corresponding to the extension from a table 5 classified by every call signal in which a call signal classification by every extension is stored, based on the bit of accommodate position information of the extension 1. And according to the information, an extension call signal is sent to the extension 2. A caller can be identified by the cycle of the call signal at the extension 2.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an extension call signal system for an electronic private branch exchange.

[Conventional technology]

In conventional electronic private branch exchanges, there is only one type of common call signal, and there is no known method for changing the cycle depending on the location of the caller. [Problems] The above-described conventional extension emitting signal system has a drawback in that it is not possible to identify the capital punishment of the caller by the linking signal or toe:, y/ringer signal, no matter which extension the call is received from.

[Means for solving problems]

In the present invention, a paging signal table is provided in the central processing unit of the electronic private branch exchange device to determine which cycle of paging signals is to be sent for each caller, and the central processing unit uses this table at the time of common-edge interconnection. Reference is made to identify the ejection signal corresponding to the caller, and a ringing signal is sent to the called extension accordingly.

C Example] Next, the features of the present invention will be explained with reference to the drawings.

FIG. 1 is a schematic diagram of an embodiment of the present invention. In FIG. 1, when the calling extension 1 dials the called extension 2 using normal hand/vagina, the central processing unit 4 divides the call signal blocks for each extension based on the accommodation location information of the calling extension 1. It stores a calling signal pattern corresponding to this inner edge from the calling signal type table 5, and sends an extension calling signal to the called extension 2 according to the information in section 7. At the called extension, the calling party can be identified based on the period of the ejection signal.

〔Effect of the invention〕

As described above, according to the present invention, when interconnecting extension lines, it is possible to identify from whom the call is coming from, depending on the type of the calling signal, before answering the telephone.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention.
...Calling extension, 2...Called extension, 3...
・Switch network, 4...- Central processing unit,
5...Call signal type table 0 87 Figure

Claims (1)

[Claims] An extension ringing signal system in extension interconnection of an electronic private branch exchange device, characterized in that a called telephone sets a ringing signal by changing the cycle of the ringing signal according to the accommodation position of the calling extension.