JPH07154837A - Trunk line connection system in private branch digital electronic switching system - Google Patents

Abstract

PURPOSE:To call the resident at the extension of a trunk line connected destination without troubling a custodian at the time of no response in the extension when the trunk line is incoming or without adding useless charge to a transmitter in a PBX dial-in system. CONSTITUTION:When extensions 1a and 1b are called when the trunk line is connected a timer monitoring preliminarily set time is started and the extensions 1a and 1b respond till fixed time monitored by the timer passes, this response extension and the trunk line are connected. When the extensions do not respond till the fixed time monitored by the timer passes, the user of the extensions is designated by a talkie trunk 6 and a call sound message is synthesized and a private branch broadcasting is performed by connecting it with a paging trunk 5. Subsequently, the extension responding by dialing a special number and the trunk line are connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local line receiving system for a private digital electronic exchange in a telephone system of an apartment house such as an employee dormitory, a student dormitory, and an apartment for students.

[0002]

2. Description of the Related Art In recent years, office line incoming calls to a private branch exchange have been changed from a call incoming method to a central office repeater to a direct inline (individual incoming call) method, a direct inward dialing (additional number dialing) method, a PBX dial-in method. And so on, it is shifting to a distributed relay system in which an incoming call comes directly to an extension.

Along with this, in the office line receiving system in the telephone system of collective housing such as employee dormitories, student dormitories, apartments for students, etc., the incoming call is concentrated in the manager's room, and later the manager uses the local broadcast to live. From the method of calling a person, by using direct inward dialing, PBX dial-in, etc., to directly receive the station line to the extension telephone of the resident of each room, the individual station line without the need for the administrator's hands It is shifting to the incoming call system.

In the direct inward dialing system in the conventional private branch line receiving system of a private branch exchange, a caller dials a representative number of a dormitory or an apartment house, and then pushes the extension number of each room by a push button dial according to the talkie guidance. By dialing or PBX
In the dial-in system, the caller dials the subscriber number allocated to the extension of each room and the central office exchange sends an extension designation signal corresponding to the subscriber number, or ISDN (Integrated Services Digital Network). ) P on the line
In the BX dial-in system, the caller dials the subscriber number allocated to the extension of each room, and the local exchange gives this subscriber number as the callee number information in the call setup message that conveys the incoming call. The private branch exchange determines and calls the extension for receiving the station line, connects the extension and the called station line if the corresponding extension responds, and if the corresponding extension does not respond for a certain period of time, the transfer destination specified by each extension An incoming call was made to the extension or a predesignated extension such as a manager's room.

[0005]

[Problems to be Solved by the Invention] However, in a dormitory or the like, a resident may frequently vacate his / her room and visit another room, which may result in a non-response to an incoming call from a station line. there is a possibility. At this time, it is only necessary to register the forwarding destination at the time of no answer to the extension telephone in my room each time, but I will change the visited destination and transfer it to the extension telephone in my room at the time of no answer It is troublesome to register. In addition, even if you register a forwarding destination for an unanswered extension in your room by moving from a specific registered destination to another destination, it is also predicted that it will not actually function. To be done. Therefore, when the caller gives up the call due to an unanswered call when receiving an incoming call to the station line, or when the administrator asks the nominee of the callee to call after calling the caller as before, There is a need to call by broadcasting etc. so that the resident can be called.
As a result, an apartment house such as a dormitory will bother the administrator.

[0006] In addition, P has the characteristic that the caller is not charged until the extension to be called responds.
Even in the BX dial-in system, since the call charge starts to be added to the caller when the administrator of the dormitory or the like responds, a wasteful charge is added until the called party answers. Furthermore, even if the resident of the destination to be called is absent, the caller is charged and the service is useless.

[0007] Looking at this type of known technology in the patent publications, the technology disclosed in JP-A-63-28157 can be mentioned.

However, in the technique disclosed in this publication, it is necessary to set absent settings in each extension telephone, and it takes time and effort to register the transfer destination when no response is made in the extension telephone in the own room. , Also, if you forget the absence setting, it will not work. Further, even if the call is automatically put on hold, the service is in use during the calling period because the adding operation is started.

Therefore, according to the present invention, when the extension is unanswered when an incoming call is made to a station line, the administrator does not have to worry about the need for setting special or extension telephone information.
It is an object of the PBX dial-in system to provide a central line receiving system of a private digital electronic exchange capable of calling a resident of an internal extension of a local line receiving destination without causing a caller to add unnecessary charges.

[0010]

According to the present invention, there is provided a station line receiving method for a private digital electronic exchange, which calls an extension at the time of receiving a station line and activates a timer for monitoring a preset time. When the extension responds by the elapse of a fixed time, the response extension is connected to the called station line, and when the extension does not respond by the elapse of the fixed time monitored by the timer, the This is to synthesize a voice message to be called by designating the user of the extension, connect it to the paging trunk to broadcast on the premises, and then connect the extension that responded by dialing the response special number and the called station line. .

[0011]

In the present invention, when the extension does not answer when the call is received from the station line, the talkie trunk for synthesizing the voice message to be called by designating the resident of the called extension is connected to the paging trunk for the private broadcasting. By broadcasting the voice message, the resident of the called extension is notified that there is an incoming call from the station line, and the resident of the called extension who heard this call dials the response special number from the nearest extension. By answering, it is possible to connect the extension and the receiving station line, and call the resident of the extension for receiving the station line without bothering the administrator, and to the caller in the PBX dial-in system. It is possible to call the resident of the extension for receiving the call to the station line without incurring unnecessary charges.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A station line receiving system of a private digital electronic exchange according to an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of a private digital electronic exchange for explaining an office line receiving system of a private digital electronic exchange according to an embodiment of the present invention.

In FIG. 1, the extension telephone 1a and the extension telephone 1b are publicly known telephones, and the extension circuit 2a and the extension circuit 2b connect the switch circuit 3 and the extension telephone 1a or the extension telephone 1b to centrally perform various functions. It transmits and receives signals to and from the device 7. The switch circuit 3 connects the extension telephones 1a and the extension telephones 1b to each other, and connects the called station line and the extension telephone 1a or the extension telephones 1b to the outside and extension lines. The office line trunk 4 has a function of detecting a call from the office line and outputting a predetermined talk guidance to the office line. The paging trunk 5 has a function of performing on-premise broadcasting, and the talkie trunk 6 has a function of synthesizing a voice message to be called. Also,
The central processing unit 7 program-controls the extension circuit 2a, the extension circuit 2b, the switch circuit 3, the office line trunk 4, the paging trunk 5, and the talkie trunk 6. The main memory 8 stores various data used for program control of the central processing unit 7.

Next, the control procedure of this embodiment will be described with reference to the state transition diagram of FIG.

FIG. 2 is a state transition diagram for explaining the station line receiving system of the private branch digital electronic exchange of one embodiment of the present invention. The numbers at the upper left of each state are the state numbers used in the description of this embodiment.

In the individual inbound line dialing system, in the direct inward dialing system, the caller dials the representative number of the dormitory and then dials the extension number by push button dialing according to the talk guidance from the central line trunk 4. In the PBX dial-in system, the caller dials the assigned subscriber number to each of the extension telephones 1a and 1b, and the central office exchange sends an extension designation signal corresponding to the subscriber number, whereby the central processing unit 7 The registered content in the main memory 8 preset by the program stored in is searched by the received number, the extension telephone 1a to receive the station line is determined, the extension circuit 2a is switched, and the bell is ringed to the extension telephone 1a. Let me call you. At this time, a timer that monitors a preset time, for example, about 20 seconds is started (see state 1 in FIG. 2).

When the extension telephone 1a of the incoming extension does not respond and a time-out occurs before the elapse of a certain time monitored by this timer, the central processing unit 7 switches the switch circuit 3 to the talkie trunk to the paging trunk 5 for the private broadcasting. 6 are connected (see FIG. 1, solid arrow). The talkie trunk 6 receives from the central processing unit 7 the extension identification number used to determine the extension telephone 1a, and the extension identification number is used to store an R (not shown) in the talkie trunk 6.
A voice that calls the extension telephone 1a by specifying it from a memory circuit such as OM, for example, "Internal extension XXX, external telephone. , Etc. are synthesized, and the paging trunk 5 connected via the switch circuit 3 broadcasts on the premises. As a result, the paging trunk 5 can be used to perform the local broadcast without the intervention of an administrator or the like to call the called party, that is, the resident of the extension telephone 1a of the destination of the station line. At this time, if a ring back tone trunk or a music on hold trunk (not shown) is connected to the office line by the direct inward dialing method, it is possible to inform the caller that the extension is still ringing. . In the PBX dial-in system, at this time, no response has been returned to the station, the caller continues to hear the ring back tone sent from the station, and the call charge still occurs. No (see state 2 in FIG. 2).

Next, the called party who hears this broadcast, that is, the resident of the extension telephone 1a at the destination of the office line dials the paging response special number from the extension telephone 1b, so that the central processing unit 7 is activated. The switch circuit 3 is switched, and the extension telephone 1b is connected to the called station line (FIG. 1, broken line bidirectional arrow). As a result, the caller can talk with the originally intended called party at the location of the extension telephone 1b, that is, the resident of the extension telephone 1a. In the PBX dial-in system, a response is first returned to the station at this time, and a call charge is incurred to the caller from the time when the call with the called party for this purpose is started ( (See state 3 in FIG. 2).

In the state 1 of FIG. 2, when the extension telephone 1a which receives an incoming call within a fixed time monitored by a timer responds, the extension telephone 1a which responds in the same manner as in the conventional individual incoming call system and the called station line are connected. (Refer to state 4 in FIG. 2).

Next, a case where the central processing unit 7 performs this control will be described.

FIG. 3 is a flow chart for explaining the operation of the local line receiving system of the private digital electronic exchange of one embodiment of the present invention. Note that this flowchart is called during the execution of the main program.

First, in step S1, it is determined whether there is an incoming call to the office line,
This routine is exited when there is no incoming call. When the incoming call to the station line is confirmed in step S1, the talk guidance from the station line trunk 4 is output to the station line side in step S2, and the extension number is dialed by the push button dialing accordingly, and the PBX dial-in is performed. In the system, the caller dials the assigned subscriber number to each extension telephone 1a, 1b, and the central office exchange sends an extension designation signal corresponding to this subscriber number, which is confirmed in step S3. In S4, the registration number in the main memory 8 stored in the central processing unit 7 is searched by the received number,
The extension telephone set 1a for receiving an incoming call is determined. Further, in step S5, a timer for monitoring a preset time of about 10 to 30 seconds is started.

In step S6, the response of the extension telephone 1a of the specific subscriber is determined, and if there is a response, the process shifts to normal processing. However, when there is no response from the extension telephone 1a of the specific subscriber before the predetermined time set in the timer determined in step S7 elapses, the talkie trunk 6 determines the extension telephone 1a in step S8. It receives the extension identification number used for this purpose, and the ROM (not shown) in the talkie trunk 6 is obtained by this extension identification number.
Voice that calls the extension telephone 1a by specifying the extension telephone, for example,
"Call extension XXX, outside line. ] And other voice messages are determined. Then, in step S9, the local broadcast is performed from the paging trunk 5 connected via the switch circuit 3. As a result, the paging trunk 5 is used to perform on-premise broadcasting without the intervention of an administrator,
It is possible to call the called party, that is, the resident of the extension line telephone 1a at the call destination of the office line. After performing on-premise broadcasting, the progress of 15 seconds is determined in steps S10 and S11,
In the meantime, the called party who hears this broadcast, that is, the resident of the extension telephone 1a of the destination of the office line dials the paging response special number, which has been determined in advance, from the extension telephone 1b which is the nearest, and the response is obtained. After confirmation, the switch circuit 3 is switched in step S13, and the extension telephone 1b is connected to the called station line. In the meantime, if a ring back tone trunk or a music on hold trunk (not shown) is connected to the office line in the direct inward dialing system, it is possible to inform the caller that the extension is still ringing. In the PBX dial-in system, at this time, no response has been returned to the station, the caller continues to hear the ringing tone transmitted from the station, and the call charge has not yet occurred.

This allows the caller to talk to the originally intended called party at the location of the extension telephone 1b.
In the PBX dial-in system, a response is first returned to the station at this time, and a call charge is incurred for the caller from the time when the call with the called party for this purpose starts. After the extension telephone 1b and the incoming call line are connected, normal processing is started.

15 in steps S10 and S11
If the called party who listens to this broadcast does not respond during the judgment of the lapse of a second, during the step S12, as a non-response process, a ring back (not shown) is made to the station line by the direct inward dialing method. Either disconnect the tone or music on hold trunk to signal an unresponsiveness or wait for the caller to give up.

As described above, the station line receiving system of the private digital electronic exchange of this embodiment is the same as the station line receiving system of directly receiving the extension accommodated in the private digital electronic exchange.
When the extension telephone 1a is called upon receiving an incoming call to a station line, a timer for monitoring a preset time is started, and when the extension telephone 1a responds by the elapse of a certain time monitored by the timer, the extension telephone which has made a response extension 1a is connected to the called station line, and when the extension telephone 1a does not respond within a certain period of time monitored by the timer, a voice message to be called out by the talkie trunk 6 by designating the user of the extension telephone 1a is displayed. When the user of the extension telephone 1a responds by dialing the special number assigned to the extension telephone 1a, the telephone is synthesized and connected to the paging trunk 5 to perform a local broadcast. It connects the wires.

Therefore, the extension telephone 1 is used when an incoming call is made to the office line.
When a and 1b do not respond, the talkie trunk 6 for synthesizing the voice message to be called by designating the resident of the destination extension is connected to the paging trunk 5 for performing the local broadcast, and the voice message is broadcast. , Recipients of the destination extension telephones 1a and 1b are informed that there is an incoming call from the station line, and the destination extension telephone 1 that heard this broadcast
When the resident of a, 1b dials the paging response special number from the nearest extension telephones 1a, 1b and responds,
It becomes possible to connect the extension telephones 1a and 1b to the incoming call line, so that the resident of the extension to which the call is received can be called without bothering the administrator, and the PBX dial-in method wastes the caller. You can call a resident of the extension of the destination of the station line without incurring any special charges.

Therefore, when there is no response at the extension upon receiving an incoming call to the station line, there is no need for the administrator to do the trouble, and in the PBX dial-in system, the caller does not need to add an unnecessary charge to the residence of the extension to the station line. Can call people.

By the way, in the above embodiment, an example of the voice message called by using the extension number in the synthesized voice for performing the local broadcast through the paging trunk 5 has been shown. It is also possible to memorize the name of, and synthesize a voice message to be called by using this name.

In the above embodiment, the paging response special number is dialed as a response to the local broadcast. However, the paging response special number is dialed by dialing a different special number assigned to each resident in advance. In addition, by dialing the PIN code registered by each resident in advance, erroneous operation of the resident who was called separately by multiple incoming and outgoing station lines and mischief of a third party who heard the local broadcast Can be prevented and the security of the call can be improved.

[0032]

As described above, according to the station line receiving system of the private digital electronic exchange of the present invention, in the individual station line receiving system in the telephone system of the housing complex such as a dormitory, the extension line does not respond when receiving the station line. At the time of, the talkie trunk for synthesizing the voice message to be called by designating the resident of the called extension is connected to the paging trunk for on-premise broadcasting, and broadcasted to the resident of the called extension. Since it is possible to connect the extension and the receiving station line by notifying that there is an incoming call and the resident of the extension to which the call is received, responds by dialing the response special number from the Momono extension. , It is possible to call the resident of the extension of the destination of the station line without bothering the administrator,
In the X dial-in system, it is possible to call the resident of the extension of the destination of the station line without incurring unnecessary charges to the caller, and it is possible to provide a very useful station line receiving system of extremely high utility value. Become.

[Brief description of drawings]

FIG. 1 is a block diagram of a private digital electronic exchange for explaining a station line receiving system of a private digital electronic exchange according to an embodiment of the present invention.

FIG. 2 is a state transition diagram for explaining a station line receiving system of a private branch digital electronic exchange according to an embodiment of the present invention.

FIG. 3 is a flow chart for explaining an operation of a station line receiving system of a private branch exchange according to an embodiment of the present invention.

[Explanation of symbols]

 1a, 1b Extension telephone 2a, 2b Extension circuit 3 Switch circuit 4 Station line trunk 5 Paging trunk 6 Talkie trunk 7 Central processing unit 8 Main memory

Claims (1)

[Claims] 1. When the extension accommodated when an incoming call is made to a station line is directly called, a timer for observing a preset time is started, and when the extension responds by the elapse of a fixed time monitored by the timer, this response is sent. When the extension is connected to the called station line, and when the extension does not respond before the elapse of a certain time monitored by the timer, a voice message which calls a user of the extension by a talkie trunk is synthesized, and Is connected to a paging trunk to perform on-premise broadcasting, and then an extension that responds by dialing a response special number is connected to the receiving station line.