JPS63156466A - Private branch exchange - Google Patents

Abstract

PURPOSE:To immediately transmit an urgent message to an extension telephone set which is registered as an incoming rejection telephone set by storing data indicating incoming control and data indicating an extension installation place in a main storage device, connecting 1st and 2nd sound source truinks in parallel to a channel switch, and selecting a connection according to the installation place of a calling extension telephone set. CONSTITUTION:When an extension telephone set 1a calls an extension telephone set 1b, a dial number is counted by a central controller 4. When it is decided that the extension telephone set 1b is under incoming control by using data from an incoming control data area RJ in the main storage device 5, it is decided whether the extension telephone set 1a is a guest room extension or office extension. When it is decided that the extension telephone set 1a is the guest room extension, the channel switch 3 connects the extension line 2c and a signal tone trunk 7 under the control of the central controller 4 and a normal busy- back tone is sent out to the extension telephone set 1a. Subsequent action is taken speedily on the calling side to sent the urgent message immediately and reduce time loss.

Description

DETAILED DESCRIPTION OF THE INVENTION H) Industrial Field of Application The present invention relates to a private branch exchange that can be provided to a service that restricts incoming calls.

Conventional technical incoming call restriction service is a service that, when a specific extension is registered as incoming call rejection, performs a cancellation operation and prevents all future calls to this specific extension from being connected. Yes, it is an effective service especially in private exchanges at hotels etc.

Places where an unspecified number of people gather, such as hotels.

This is a very effective way to reject calls from fans from other extensions or external phones when celebrities are staying at the hotel.

However, with the conventional incoming call restriction service of the on-premises Sl switch, all calls to a specific extension telephone that is registered to reject calls are connected, and the calling extension telephone hears a busy tone or special tone. If there is an emergency or if you forget to cancel the operation, 1: You could not call it.

As a countermeasure to this problem, Japanese Patent Application Laid-Open No. 61-23497 (HO4
Q3158) As shown in (21) If there are continuous call requests from other extensions to a specific extension phone that is registered for call rejection, the number of call requests will be counted up, and if it exceeds a certain value (if it reaches two, both parties will receive a call request). However, it is also known to connect a particular telephone extension to another telephone extension (
For example, if you want to contact someone about an urgent matter from a phone installed in a hotel's office, you will have to retry the call many times until the number of calls reaches a predetermined number of times. In addition to this problem, there is also the problem that a large amount of time is lost due to repeated calls.

(C) Problems to be Solved by the Invention The present invention solves the above-mentioned problems, namely, extension telephones that are registered to reject calls (2) Urgent matters cannot be communicated immediately and repeated calls (2) This solves the problem of time loss.

Means for Solving Problems The present invention provides a plurality of extension telephones, and a communication path switch connected to the extension telephones via an extension circuit.

A central controller connected to the switch and a central controller (
2 connected main storage devices with an area for storing all data indicating incoming call restriction and an area for storing data indicating the extension installation location; 1 communication path switch (2 parallel C: connected signal tone trunk (first sound source trunk) ) and a trunk (second source trunk) that generates a signal tone or voice signal different from the signal tone.

(e) Operation Stores data indicating one incoming call restriction and data indicating the extension installation location in the main memory, and switches one call path in parallel (:
Since the first Jinyuan trunk and the second conference trunk are connected, the connection can be selected depending on the installation location of the one-calling extension telephone.

(f) Example The present invention will be explained below with reference to FIGS. 1 to 3.

Fig. 1 is a block diagram of a hotel private branch exchange according to an embodiment of the present invention, Fig. 2 is a layout diagram mainly showing the storage state of data in the 8-storage device, and Fig. 6 is a program for performing extension connection processing. FIG.

In FIG. 1, (1) is an extension telephone consisting of each extension telephone (111) to (11)(2) in each room of the hotel, and (11) is installed in the hotel's office.

(2) is an extension circuit composed of extension circuits (21) to (21)-2 connected to extensions (1a) to (11) in each room, and (3) is an extension circuit composed of extension circuits +21 (Z-connected). The communication path switch, (4) is the central control unit, and (5) is the Fig. 2 (
: A main storage device having a storage area for the data shown.

(6) is a central office line trunk, (7) is a signal trunk that outputs a normal busy tone (No. 1 Jinyuan trunk), (81 is a message announcing that incoming calls are restricted, such as "
We are currently restricting incoming calls. '' is repeatedly output from the talk trunk (second Jinyuan trunk), and each communication path switch (31 (: connected).

Next, the operation of the embodiment of the present invention will be explained.

First, if you register call rejection for extension (1b), see Figure 2 (
: Incoming call restriction data area (R
J ) extension (11)) (: applicable area (2) Data "1" indicating that incoming calls are restricted is set a. Data indicating the installation location of extension telephone (1) is set in the installation location data area (R13 )l:, is set. That is, the extension (1 &) (11)) (1c) installed in the hotel guest room...
1; "1" is set in the corresponding area, and rOJ is set in the corresponding area.

Next, as an example in which a C call occurs on extension telephone (11), which is registered to reject calls, extension telephone (1a) is registered as extension telephone (11).
The operation when calling b) is explained in Figs. 1 to 3 (accordingly, the extension telephone number (1!L) makes a call and the extension telephone number (11) which is restricted from incoming calls) is dialed. Then, the dialed digits are counted by the central control unit (4), the digits are analyzed as shown in the flowchart of FIG. 6, and an extension call is determined. Next, the extension telephone (1℃
) is an extension line, the first step is to determine whether or not incoming calls are restricted. When it is determined that the extension telephone (111) is under incoming call restriction because data "1" is set in the incoming call restriction data area (RJ) in the main memory (5), 1 calling extension (extension It is determined whether the telephone (1a)) is a passenger room line or an office line.

Data "1" is written in the installation location data area (RB) in the main storage device (5) to indicate that the extension telephone (1&) is a guest room extension.
” is set, the call path switch (3) under the control of the central control unit (4) connects the extension circuit (2a) and the signal tone trunk (7) to the busy tone connection processing PM. ), extension telephone (1&) (2), normal busy tone is sent.

On the other hand, the hotel office (2 extension telephones (11)
) makes a call and dials the extension telephone number of the extension telephone (1b) which is under incoming call restriction, it is determined that the extension telephone (1b) is under incoming call restriction through the procedure described above. Then, it is determined whether the calling extension (extension telephone (11)) is an in-room line or an office line. 1. Judgment that the calling extension (extension telephone (11)) is an office line (2. Control of the central control unit (4) (2. 8) Connect.

Therefore, the extension phone (11) l2 sends out a message saying, ``We are currently restricting incoming calls.'' In the hotel office, we can see that the extension phone (11) is currently restricting incoming calls, so we cancel the restriction on incoming calls. After ζ: You can take actions such as calling back or going out directly to Room 1.

Note that the talk trunk (8) (2) includes a RAM (random access memory) that stores messages in the form of digital signals and a D/A converter, but instead of messages (
An oscillator that emits a signal tone different from the busy tone may be used.

(G) As described in detail of the invention (2) According to the present invention, when a specific extension telephone is restricted from incoming calls, the calling extension telephone ! = which must be contacted for urgent matters is restricted from receiving calls. Since it is possible to announce something, the calling party can quickly (by taking secondary action, urgent matters can be communicated immediately) and the time loss can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an in-house hotel exchange machine according to an embodiment of the present invention, Fig. 2 is a layout diagram showing the storage state of data in the main storage device, and Fig. 3 is a diagram showing the data storage state in the main storage device. 3 is a flowchart showing the main part of the program. (11, (1&) ~ (11)...Extension telephone, 12+
, (2&]~(21)... extension circuit, (3)... call path switch, (4)... central control unit, (5)...
- Main memory, (7)...Signal trunk (first sound source trunk), (8+...Talking trunk (second sound source trunk).

Claims (1)

[Claims] (1) A plurality of extension telephones, a call path switch connected to the extension telephones via an extension circuit, a central control device connected to the switch, and a data link connected to the central control device indicating incoming call restriction. a main storage device having an area for storing data and an area for storing data indicating the extension installation location; and a signal tone trunk (
a first sound source trunk) and a trunk (second sound source trunk) that generates a signal tone or voice signal different from the signal tone; storing data indicating incoming call restriction in the main storage device when incoming call restriction is applied to the telephone;
When a call occurs to the specific extension telephone, the first sound source trunk or the second
A private branch exchange characterized in that a voice source trunk is selected and connected to the calling extension via the call path switch.