JPS61203766A - Electronic automatic branch exchange system - Google Patents

Abstract

PURPOSE:To recognize a call at a visiting location by storing allocated position information of an extension encountered with no reply and a called extension in a storage device and displaying the no reply of the extension on all multi- function telephone sets with display device. CONSTITUTION:It is supposed that an operator X of an extension STA1 dials a number of an extension STA2. If the extension STA2 give no reply for a prescribed time, the operator X hooks off and dials a special number, then an outgoing trunk ORT connected through a route 1 sends the number of the extension TA2 received already to a central controller CC in the route 2. The controller CC converts the number of the extension STA2 and the number of the STA1 sent from the register trunk OTR into allocated position information and stores the information in a storage device MEM. No reply of the extension STA2 is displayed for a prescribed time on all extensions STA2-STAn with display connected to an electronic private branch of automatic exchange EPBX at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic automatic private branch exchange system in which a multifunction telephone with a display device is housed in the private branch exchange device.

[Conventional technology]

Conventionally, when an extension telephone operator dials the called extension number in an electronic automatic private branch exchange system, and the called extension does not answer, the called extension telephone becomes a multifunction telephone with a display device. If so, the extension operator who dialed the called extension number would hook and dial the special number, and the call would be displayed only on the display of the called extension phone while the called extension operator was absent. The most common method was to display information.

[Problem that the invention seeks to solve]

However, in this case, there is a drawback that the operator of the called extension telephone cannot know that there has been a call until he returns to the location where the called extension telephone is installed.

SUMMARY OF THE INVENTION An object of the present invention is to solve the disadvantage that the called extension telephone operator cannot know that there is a call from another extension when the called extension telephone operator is in another location, and to To provide an electronic automatic private branch exchange system that can call a called extension telephone from a location and automatically connect C2 to an extension that encounters no response.

[Means for solving problems]

The present invention provides a memory device and an extension telephone operator who dials a called extension number and encounters a non-response of the called extension, hooks the called extension, dials a special number, and stores the extension that encountered the non-response and the called extension. The location information is stored in the storage device, and a message indicating that the called extension is unanswered is displayed on the display devices of all display-equipped multifunction telephones for a certain period of time, and during this display, the called extension operator The system is characterized by comprising means for calling the dialed extension from information in the storage device when a response code and a called extension are dialed from any extension telephone connected to the private branch exchange. .

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 3 are diagrams showing connection states during mutual calls between extension lines in an embodiment of the electronic automatic private branch exchange system according to the present invention;
FIG. 4 is a flowchart showing the operation.

The electronic automatic private branch exchange EPBX has four multifunction extension telephones with display devices 5TA1. STA,, 5TA3.
.......

STA% is line circuit “1 + Ll * 'Q +・
... + accommodated via Ln. Storage device MEM
There are extension telephones STA, , STA,, STA, ,
...The person handling the song 5TA3 dials the called extension number,
When a called extension is not answered, the user hooks the called extension and dials a special number, and the accommodation location information of the called extension and the called extension are stored.

Next (=, the operation of this embodiment will be explained.

Now, the operator X of the extension telephone STA is the extension telephone STA,
Suppose that you have dialed the number of
When Operator Device CCt: Send. Central control unit CC is transmitting register trunk 5RT
The number of the extension telephone STA sent from
(Step 4), and all extension telephones with display devices S connected to the electronic automatic private branch exchange.
T.A.

8TA, ......, extension telephone STA to 5TAs
, a non-response is displayed for a certain period of time (step 5, above in Fig. 2).

When the operator of the extension telephone STA sees this display at the destination, any extension telephone connected to the same electronic automatic private branch exchange EPBX set at the destination,
In this case, when dialing the response code and the number of the extension telephone STA from the extension telephone STA, if it is within the displayed time (step 6.7), the central control unit CC will dial the extension telephone STA.
Step 8) Read the storage location information of extension telephone 5TA1 from the storage device MEM from the number of TA, and convert it to the number of extension telephone 5TA1.
At the same time as automatically calling back (step 9), multi-function extension telephones 5TAL, 8TA,, STh, . . . , 5
The display of TArb is completely erased and the registration of the storage device MEM is canceled (step 10).

From now on, the operator X of the extension telephone STA and the extension telephone STA
.

A telephone conversation takes place between handlers y (steps 11 and 12).
).

If the called party does not respond even after displaying the message for a certain period of time, the central control unit CC assumes that the called party is not in the same premises and cancels the message display state. A message to that effect is displayed on the extension telephone STA (step 13), and the registration of the storage device MEM is canceled (step 14).

Note that if a plurality of extension operators set message display at the same time, it is also possible to display the messages alternately on the two display devices ζ.

〔Effect of the invention〕

As explained above, the present invention stores the accommodation location information of the unresponsive C: encountered extension and called extension in the storage device, and also displays on all multifunction telephones with display devices that the extension is unresponsive. By doing this, the person handling the unanswered extension can know that there was a call at the destination, and
Furthermore, by dialing the response code and the called extension number from any of the extension telephones during this display, it is possible to automatically connect to the extension.

[Brief explanation of drawings]

Figure 1, Figure 2, '! Figure J3 is a block diagram of one embodiment of the electronic automatic private branch exchange system according to the present invention. FIG. 4, which is a transition diagram of the extension connection state, is a flowchart showing the flow of processing. EPBX: Electronic automatic private branch exchange equipment STA, ST
A,, STA,..., STA%: Extension telephone M
EM: Storage device IOT: Trunk within own station ORT: Outgoing register trunk C Central control unit LC,, LC,, LC,... Song, LC: Line circuit RG: Ringing
RBT: Ring Pack Tone Figure 1 Figure 2

Claims (1)

[Claims] In an electronic automatic private branch exchange system in which a multifunction telephone with a display device is housed in a private branch exchange device, when a storage device and an extension telephone operator dial a called extension number and encounter an unanswered call, the When you dial the special number,
Storing accommodation location information of the extension that encountered non-response and the called extension in the storage device, and displaying for a certain period of time that the called extension was non-responsive on the display devices of all multifunction telephones with display devices; And when the person handling the called extension dials the response code and the called extension number from any extension telephone connected to the private branch exchange device while this display is displayed, the called extension is dialed from the information in the storage device. An electronic automatic private branch exchange system characterized by being equipped with a means for calling back an extension.