JPS62243457A - Ring back tone sending control system - Google Patents

Abstract

PURPOSE:To discriminate to which user a call comes by sending plural different ring back in response to called party extension numbers to the called party extension of one line by means of the dialing of the called party extension by an extension subscriber. CONSTITUTION:Plural users exist in the extension 2 and plural extension numbers are assigned to one extension. Four digits (abcd) of the extension number are used and 0-9 of the 4th digit (d) assigned to common users of the extension 2. A subscriber line (LC) 4 has a function sending different call tones from a call sound source 5 to the extension 2 in response to the 4th digit 0-9 of the extension number (abcd). When the extension 1 hooks off and dials an extension number (abcd) corresponding to the extension user of the extension 2, the dial information is identified by a CPU 7 via a switch 6 and the CPU 7 outputs a ring back tone sending instruction and dial information (d) at the end to the LC 4. The LC 4 applies ring back tone sending control and the ring back tone is sent to the extension 2 via the LC 4. The extension 2 listens to different ring back tones at every user.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ring tone transmission control system, and particularly to a ring tone transmission control system in a private branch exchange.

[Conventional technology]

Conventionally, one extension subscriber is given one extension number, and when calling an extension subscriber, the extension number is dialed to call the extension subscriber, but usually only one type of ring tone is used at this time.

[Problems to be Solved by the Invention] 1 In the conventional private branch exchange device described above, when calling an extension subscriber, a plurality of different ring tones are sent to one extension subscriber by dialing on the calling party's side. It didn't happen. Therefore, if there are multiple extension users for one extension subscriber, one type of ring tone will be sent to that one extension subscriber, making it impossible to determine which extension user received the call. There are drawbacks.

[Means for Solving the Problems] The ring tone transmission control method of the present invention is such that, in a private branch exchange device having a ring tone transmission function, one line of a called extension is transmitted by dialing the called extension number by an extension subscriber. It is equipped to send a plurality of different ring tones to the subscriber according to the called party's extension number.

〔Example〕

Next, the present invention will be explained using the drawings.

FIG. 1 is a block diagram of a private branch exchange device showing an embodiment of the present invention, and shows a case where extension 1 calls extension 2 and interconnects the extensions.

In this embodiment, there are multiple users of extension 2, and multiple extension numbers are assigned to one extension.

Here, the extension number abcd is 4 digits, and the 4th digit d is 0, ~
9 is assigned to the shared user of extension 2.

The subscriber circuit (hereinafter referred to as LC) 4 has the 4th digit 0. of the extension number abcd. . . . 9, it has a function of transmitting a soft ringing tone from the ringing sound source 5 to the extension 2 in response to the call tone source 5.

First, extension 1 goes off-hook and dials extension number abcd corresponding to the extension user of extension 2.

The dial information is identified by the central control unit (hereinafter referred to as CPU) 7 via the Sui-Sochi 6, and it is recognized that the call is for extension 2. The CPU 7 issues a ring tone sending command and the last dial information d to the LC 4. The LC4 performs ring tone transmission control corresponding to the last dial information d based on the information from the CPU7. The ringing tone from the ringing sound source 5 is sent to the extension 2 via the LC 4, and on the extension 2, each user can hear a different ringing tone.

〔Effect of the invention〕

As explained above, the present invention allocates multiple extension numbers for each user using that extension to a single extension subscriber, and furthermore, by changing the ring tone for each extension number, it is possible to make a call to which user. This has the effect that the user can directly respond to the call.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a transverse exchange device showing an embodiment of the present invention. 1.2... Extension, 3.4... Subscriber circuit (LC),
5... Ringing sound source, 6... Switch, 7... Central control unit (CPLI).

Claims (1)

[Claims] In a private branch exchange device having a ring tone transmission function, when the extension subscriber dials the called party's extension number, a plurality of different ring tones are sent to one called party's extension subscriber according to the called party's extension number. A ring tone transmission control method comprising a means for transmitting a ring tone.