JPH05176064A - Trunk line incoming system - Google Patents

Abstract

PURPOSE:To enable speech with a plurality of callee in order without botherring both caller and callee by connecting reception and outgoing terminals in the set order based on the switching scanning of the terminal at the outgoing side. CONSTITUTION:When the conversation with the first callee is finished and the callee is on the hook, an internal circuit 6r detects it and a central processing unit 3r sets the internal counter, plus 1, to make the present counter value '1'. Then the central processing unit 3r compares the number of extension numbers stored in a memory section 7r with the counter value. In this case, the number of extension lines stored in the memory section 7r is '3' and the counter value is '1' so that all the extension numbers stored in the memory section 7r is judged to be not originated, acquiring the extension number stored next in the memory section 7r. The central processing unit 3r changes the switch in the speech path section 8r to connect the extension number and the central office line 5r.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an office line receiving system of a private branch exchange having an ISDN office line.

[0002]

2. Description of the Related Art Conventionally, an incoming call of an office line having an ISDN office line is performed as described below.

The private branch exchange on the receiving side receives an input from a central processing unit for controlling the entire apparatus, an extension circuit for connecting an extension telephone as a terminal and the private branch exchange to detect off-hook of the extension telephone, and an office line. And a call path unit having a plurality of switch groups for connecting the trunk line trunk to the terminal extension circuit. Note that the central processing unit is provided with a program that records the procedure of the control operation of the private branch exchange, and the central processing unit stores the information according to the procedure described in the program when there is information input to the station trunk and extension circuit. Perform processing.

When an incoming call arrives at the private branch exchange from the central office line, information from the central office line is input to the central office trunk of the private branch exchange. The central processing unit analyzes the information input to the trunk line trunk.

As a result of analyzing the information, when the extension number of the receiving side is registered in the information, the central processing unit in the call section connects the line of the terminal indicated by the extension number and the calling side terminal. Perform the process of switching the switch.

By such processing, the lines of the caller side and the callee side are connected, and the caller of the caller side terminal and the callee of the callee side terminal can talk.

In the above-mentioned station line receiving system, the information transmitted from the transmitting side to the receiving side will be described in more detail.

The information transferred from the transmitting side to the receiving side when receiving a call is called a call setup message. The call setup message can be broadly divided into a common part that is common to all messages and an individual part whose registered content can be changed for each message.

The common section includes a call number indicating the type of terminal to be controlled and a message type indicating whether the message is a call or a response. The individual section includes a called address for registering the outside line number of the called side and a called sub address for appropriately registering the called side extension number. If necessary, further information can be registered in the individual part within a predetermined length range.

In the above-mentioned station line termination system, when the private branch exchange receives the call setup message from the ISDN station line,
The contents of the call setup message are analyzed to check whether the called subaddress is registered. If the destination sub-address is registered, the private branch exchange connects the ISDN office line and the extension corresponding to the extension number registered in the destination sub-address.

[0011]

In the conventional station line termination system, only one extension number is registered in the called subaddress of the call setup message from the ISDN station line. Therefore, when the callees of multiple terminals that the caller wants to talk to are using the same private branch exchange, for example, if the caller is not on the premises, after the caller makes an outside line to the first callee, The first caller had to transfer the extension to the extension of the person who wants to make a call next, or the caller had to hang up and make a call to the person who wants to make a call again.

[0012] The above-mentioned method may bother the other party's hand, or may require the caller to call back many times.

The present invention has been made in view of the above circumstances. A caller inputs a plurality of extension numbers to make a call at one time, and after the call ends, a plurality of extension numbers sent before the call are input. By connecting to the ISDN station line in order, it is possible to call the person who wants to call next without making the caller to call again many times.

[0014]

A station in a private branch exchange which receives destination information sent from a terminal on the originating side via a station line and connects the terminal on the originating side with the terminal on the receiving side based on the destination information. In the line receiving method, when the extension numbers of a plurality of receiving side terminals are registered in the destination information, the receiving side terminal and the receiving side terminal and the receiving side terminal are connected in a predetermined order based on the switching operation of the calling side terminal. It is characterized in that it is connected to a calling terminal.

[0015]

According to the present invention, after the switching operation of the receiving terminal,
The receiver terminal and the sender terminal that are registered next can be connected in a predetermined order.

[0016]

EXAMPLE An example of the present invention will be described with reference to FIG.
FIG. 1 is a block diagram for explaining a private branch exchange of the present invention.

In FIG. 1, reference numeral 1 is a private branch exchange. A telephone 2 is a terminal connected to the private branch exchange. A central processing unit 3 controls the operation of the private branch exchange. Reference numeral 4 is a transmission register that receives the selection code transmitted from the telephone 1 and counts the corresponding number. Reference numeral 5 is a trunk line trunk that connects the ISDN office line and the telephone set 1 when a call is made from the terminal 1 to the outside or a call is made from the outside to the telephone set 1. Reference numeral 6 is an extension circuit for detecting the off-hook of the telephone 1. A memory unit 7 stores a plurality of extension numbers registered in the call setup message. Reference numeral 8 is a communication path section having a plurality of switch groups for connecting the trunk line trunk and the extension circuit of the terminal.

In addition to the memory unit 7, there is also a memory that stores a program that describes the processing performed by the private branch exchange in this embodiment (not shown). The central processing unit 3 controls the private branch exchange according to the program stored in the memory.

In this embodiment, both the transmitting side and the receiving side are provided with a private branch exchange and a telephone connected to it. In FIG. 1, those belonging to the private branch exchange and the telephone set on the transmitting side are marked with s as a subscript and the subscript r on the receiving side to distinguish them.

The operation of the station line receiving system of this embodiment will be described below. First, the operation on the calling side will be described.

The caller goes off-hook on the telephone 2s and inputs the telephone number of the other party to receive the call. In this embodiment, since the terminal connected to the same private branch exchange 1s is not called, the outside line number of the other party is input first, and then the extension number is input. At this time, in order to distinguish between the external line number and the internal line number, it is possible to input a number other than a number such as '#' between them.

Further, there are a plurality of parties to whom the caller wants to receive a call, and when the plurality of parties are using terminals connected to the same private branch exchange 1r, the parties who want to call next after the first extension number Enter the extension number. In order to distinguish between the extension numbers, you may enter '#' in the same way.

In this way, the extension number is input after the extension number. The extension you just entered is "300" 201 "
It will be '409'. Therefore, the calling party has the “external number # 30.
This means that 0 # 201 # 409 'has been input.

The extension circuit 6s detects that the telephone 2s is off-hook. Then, the central processing unit 3s connects the telephone 2s and the transmission register 4s. Then, the telephone number input as described above through the telephone 1s is sent to the transmission register 4s as a selection code and the number is stored.

When the input of the above-mentioned telephone number is completed, the central processing unit 3s analyzes the number stored in the transmission register 4s and creates a call setting message. In the common part of the call setup message, the call number is the number corresponding to the telephone set, the call type is the call origination, the external part number entered as the destination address in the individual part, and the multiple extension numbers entered in the destination subaddress. Register 300 ″ 201 ″ 409 ′. It is assumed that the extension numbers registered in the called sub-address in this embodiment are in the order of input.

The call setup message thus created is sent to the office line via the office line trunk 5s.

The base station that manages the central office line performs processing for receiving a call to the other party based on the information of the call setting message sent.

Next, the operation on the side that receives the call setup message from the office line will be described. When a call setup message is sent from the central office line to the private branch exchange on the called side, the private branch exchange 1r receives it via the central line trunk 5r. When the call setup message is received, the central processing unit 3r of the receiving side private branch exchange 1r analyzes the message. From the call setup message, the type of the message and the type of the terminal that should receive the call are determined. When it is found that the terminal to be connected is the telephone set 2r connected to the private branch exchange 1r as a terminal, the called subaddress is checked. At that time, when a plurality of extension numbers are registered in the destination sub-address, the central processing unit 3r analyzes the number and extension numbers and stores them in the memory unit 7r. In this embodiment, it is assumed that the extension numbers registered in the memory unit 7r are in the order registered in the called sub address.

Here, in the following processing of the central processing unit 3r, a counter internally held by the central processing unit 3r is used. However, the initial value is 0.

First, the central processing unit 3r first connects the internal circuit 6r of the telephone 2r corresponding to the extension number "300" stored in the memory unit 7r and the office line trunk 5r. Switch. In this way, the caller and the caller of the extension number input because the caller first receives the call can talk.

When the callee on-hooks after the first conversation with the callee is completed, the internal circuit 6r can detect it. When the internal circuit 6r detects that the telephone 2r is on-hook, the central processing unit 3r increments the internal counter by one. Then, the current counter value becomes 1.

Next, the central processing unit 3r compares the number of extension numbers stored in the memory section 7r with the value of the counter. In this case, since the number of extension numbers stored in the memory unit 7r is 3 and the value of the counter is 1, it is determined that all extension numbers stored in the memory unit 7r have not been transmitted, and the memory unit The extension number stored next in 7r is acquired. Then, the central processing unit 3r switches the switch in the communication path unit 8r in order to connect the extension number and the office line trunk 5r. A call between the caller and the second callee thus made can be started.

The same operation is performed thereafter until it is determined that the processing for connecting all the extensions stored in the memory section 7r has been performed.

In the above operation, the connection operation after the call between the office line and the plurality of extension numbers is completed is performed in the private branch exchange on the receiving side. This operation can also be performed in the private branch exchange on the calling side.

That is, an outside line number and a plurality of extension numbers are input to the calling side telephone 2s and stored in the memory section 7s. Then, first, only one outside number and one extension number are registered in the call setting message and sent to the office line.

When the call ends, the originating telephone 2s
When the central processing unit 3s on the originating side detects that the call has been on-hook, one external line number and the next extension number are registered in the call setting message and sent to the office line. By such processing, the call between the caller and the plurality of callees is performed in the same manner as in the above embodiment.

Further, in this embodiment, the order of connecting the extension numbers on the receiving side is the order entered by the caller. Other,
In order that the caller can arbitrarily decide the order, for example, after inputting the extension number, what number of the extension number should be received, and after inputting the extension number, the corresponding number of the dial of the telephone 2s is set. A method of inputting is also possible.

[0038]

As is apparent from the above description, the present invention has the following advantages.
It does not bother the callee, and the caller can make a call with a plurality of callees in order by making a call once.

[Brief description of drawings]

FIG. 1 is a block diagram according to an embodiment of the present invention.

[Explanation of symbols]

 1 private branch exchange 2 telephone 3 central processing unit 4 transmission register 5 office line trunk 6 extension circuit 7 memory section 8 speech path section

Claims (1)

[Claims] 1. A station line receiving system in a private branch exchange that receives destination information sent from a source terminal via a station line and connects the source terminal and the destination terminal based on the destination information. In the case where extension numbers of a plurality of receiving side terminals are registered in the destination information, the receiving side terminal and the calling side terminal are operated based on a switching operation of the calling side terminal and in a predetermined order. A station line incoming call system characterized by connecting to.