JPH07245651A - Selection control system for relay line in exchange - Google Patents

Abstract

PURPOSE:To prevent disable speech by a data system (sound system) due to congestion of speeches in a sound system (data system) when speeches of the sound system and the data system are used in mixture for a relay line between exchanges. CONSTITUTION:A memory section 4 connecting to a control section 3 of an exchange 1 is provided with a relay line routing table 4b in which a speech type available for each time zone as to a relay line of each path is registered. When a terminal equipment makes a call, the control section 3 discriminates a type of the calling terminal equipment and its time and when the control section 3 identifies a line corresponding to a path to be identified based on a telephone number of an opposite party, the control section 3 uses the relay line routing table 4b of the memory section to discriminate an available line by the calling terminal equipment and connects the calling terminal equipment via the discriminated relay line when the available line is discriminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trunk line selection control system in an exchange. When a network is composed of a plurality of PBX exchanges, the exchanges are connected by a trunk line. In such a relay line, a voice call for making a voice call and a data call for making a call using data (data between facsimile devices or information processing devices via a modem) are mixedly used. . When a user of such an exchange makes a data call, if the trunk line is congested by a voice call, the line may not be captured, and a solution to this problem is desired.

[0002]

2. Description of the Related Art FIG. 7 is an explanatory view of a conventional example. In FIG. 7, A to C are exchanges such as PBX, and each exchange A to
C is a relay line ab, bc, ca that uses exclusive lines for each other
Connected by. Voice telephone terminals (T
It is assumed that a large number of facsimile terminals (displayed by), data-type facsimile terminals (displayed by FAX) are accommodated.

A user of each exchange makes a call at an arbitrary time and makes a voice call or a data FAX call with a terminal of the own exchange or a terminal of another exchange via a relay line. It is supposed to be possible.

[0004]

In the configuration of FIG. 7 described above, when the communication of the data system is concentrated in a certain time (for example, when the time for reporting the business etc. is determined), the relay line is provided. Due to the mixed use of the voice system and the data system, if all the lines are used by the voice system call at that time, the situation that the data system call cannot be performed occurs. In this case, data calls must wait until the line becomes free. Conversely, if the line is occupied by a data-based call, the line may not be available when the user wants to make a voice call.

In this case, even if it is known that the number of data-based (voice-based) calls increases during a certain specific time period, the intended call cannot be performed if the line is used by another call. was there.

According to the present invention, when the relay lines between the exchanges are used in a mixed manner for voice and data calls, voice (data) calls are congested depending on time, so The purpose is to prevent situations in which calls cannot be made.

[0007]

FIG. 1 is a block diagram showing the principle of the present invention. In FIG. 1, 1 is an exchange such as a PBX which is connected to a plurality of other exchanges by a trunk line to form a network, 2 is a communication path (NW), 3 is a control unit, 4 is a memory unit, and 5 is an exchange 1. The accommodated terminal, 6 is a relay line. 3a of the control unit 3 is a terminal type identification means, 3b is a route identification means, 3c is a time detection means, 3d is an available line determination means, 3e is a connection control means, and 3f is a timer.
Further, 4a in the memory unit 4 is a type of each terminal (a voice system representing a telephone terminal, a data system such as a FAX terminal or a personal computer, and a mixed system representing a terminal used to switch between a voice system and a data system).
4b is a trunk line routing table in which available call types for each line for each route are registered.

According to the present invention, each relay line is provided with a table in which priority is given to a call system or a data system in advance according to the time zone, and a user makes a call to request a connection via the relay line. When this is done, the type of the calling terminal is identified, the line that can be used by that terminal at the current time is identified by the above table, and connection is made if there is an available line.

[0009]

In FIG. 1, when the terminal 5 makes a call and inputs the other party's number, the control unit 3 of the exchange 1 uses the terminal type identification means 3a to make a memory using the terminal number (accommodation position or telephone number) of the terminal 5. The terminal type is identified by referring to the terminal table 4a of the unit 4. Further, the route identifying means 3b identifies the route (route) to be connected from the inputted partner number. When the route is known, the time detecting means 3c causes the timer 3f.
Read to detect the current time. Next, the available line discriminating means 3d refers to the relay line routing table 4b of the memory section 4 for the line of the identified route (including the case where there are a plurality of lines), and makes a call in the current time zone. The available line is determined according to the type of the terminal 5.

When the available line is determined, the connection control means 3e controls the connection between the calling terminal 5 and one of the determined lines. Trunk line routing table 4b
If a large number of data terminal calls are made in advance depending on the time zone, many lines can be assigned to the data system to preferentially secure the data system call in that time zone. A large number of voice systems are assigned to the opposite time zone, and a time zone in which both voice and data systems are mixed is assigned so that both can be used.

[0011]

FIG. 2 shows a PBX and a plurality of PBs in which the present invention is implemented.
It is a figure which shows the network structure by X. In FIG. 2, 10 is a PBX (an example in which there are three exchanges # 0 to # 2), 11 is a communication path (NW) for switching connection by switching, 12 is a control device, and 13 is a control device 12. CPU (central processing unit), 14 is a memory (MM) in the control unit 12, and 15 is a trunk line group (trunk line numbers 1001 to 1) of a route (0) from PBX # 0 to PBX # 1.
004) and 16 are relay line groups (relay line numbers 2001 to 200) of the route (1) from PBX # 0 to PBX # 2.
3), X, A, C are telephone terminals housed in each PBX,
Y and B are data terminals accommodated in the PBXs # 0 and # 1 (including a facsimile machine and an information processing apparatus, but represented by FAX), and D is a telephone terminal and a data terminal (FAX) accommodated in the PBX # 2. It is a mixed terminal that has both of the above and performs one communication by switching.

FIG. 3 is an explanatory diagram of data stored in the memory. In the memory (MM) 14 provided in the control unit 12 of FIG. 2, 140 to 142 represent the trunk line routing table (corresponding to 4b in FIG. 1), and 140 is a line group corresponding to each route. A route table (represented by RUTT) in which information for indexing is stored, 141 is a route-based line group table (indicated by LNT) in which information for indexing each line in the route line group is stored, 1
Reference numeral 42 is a table (represented by CKT) that stores time-corresponding call types (call-enabled call types) for each line. The contents of this trunk line routing table are shown in Figure 4.
It will be described later with reference to FIG. 5 (FIGS. 4 and 5).

Further, 143 is a terminal type table (TR which stores the terminal type of each terminal accommodated in the PBX # 0.
MT, corresponding to 4a in FIG. 1), 144 is an exchange process,
145 is an area for storing a program and data for selecting a trunk line, and 145 is an area for a soft clock. As the terminal type, as shown in FIG. 2, voice terminal, data (FA
There are three types: X) terminals and voice + data terminals.

FIG. 4 shows a concrete example of the trunk line routing table, and FIG. 5 shows the contents of the table shown in FIG. 4 as a table. 4 and 5 show the PBX # of FIG. 2 above.
Is a table relating to the trunk line groups 15, 16, ... Of each route such as the route (0), the route (1), ...
The route table (RUTT) 140 of FIG. 4 stores the leading addresses (LLN addresses) of the lines on the route-based line group table (LNT) 141 for all routes of route number (0), route number (1), .... Therefore, the line group table (LNT) 141 for each route has an address for accessing the pattern on the time zone / call type table (CKT) 142 corresponding to the number of lines in each route and each line number ( (PAT address) is stored.
The time zone / call type table (CKT) 142 stores a call type pattern designated as being capable of communication corresponding to the time zone for each line. As the call type set corresponding to the time zone, 1 is a voice system and 2 is a voice system.
Is a data system, and 3 is a voice system + data system (any communication is possible).

FIG. 5 is a table representation of the contents of the table shown in FIG. 4. For example, in the case of the line number 1001 of the route (0), it can be used for voice communication from 0:00 to 1:00. From 23:00 to 24:00, it means that it can be used for both voice system and data system.

The trunk line routing tables shown in FIGS. 4 and 5 analyze the dial signal indicating the connection destination inputted from the calling side, and when the route information is identified, the route table 140 on the route table 140 is identified. The LLN address corresponding to the route is taken out, and then the PAT of the first line from the line group table (LNT) 141 for each route by the LLN address
The address is extracted, and the call type at the current time is extracted from the call type table (CKT) 142 by time zone of the line corresponding to the address.

FIG. 6 is a control flow of the embodiment, which is executed by the control device 12 of FIG. This process is P
It is started after the BX receives the dial signal of the partner telephone number from the terminal on the calling side.

First, the accommodating position information of the calling terminal is detected, and the terminal table (TRM) in the memory section 14 of FIG. 3 is detected.
(T) 143, and the calling terminal type is extracted (60 in FIG. 6). Next, the other party's telephone number is analyzed to determine the route (at step 61) and the soft clock is extracted (at step 62). Next, it is judged whether or not all the lines of the decided route have been checked (63), and since it has not finished at first, the call type of the current time of the relevant route (time of the soft clock) is determined by the relay line routing table. (See FIGS. 4 and 5). At this time, extraction is performed for the first line of the route.

Next, the type of the calling side terminal extracted in the above process of 60 is compared with the extracted type of call of the current time of the line (65), and if they match, it is judged whether the line is in use (same). 66). If the line is free, the line number is extracted as a line that can be sent (step 67) and stored in the exchange processing part 144 of the memory part 14. After that, the process returns to 63 for performing the same process for another line of the same route.
If the terminal type and the call type do not match in the process of 65 or the line is in use in the process of 66, the same process is similarly performed for the other line of the same route.

When all the lines of the same route have been checked, the exchange processing unit 144 of the memory unit 14 is checked to determine whether or not the lines capable of transmission have been extracted (68). One is randomly selected from the lines that can be transmitted (69). This process is performed so that the youngest one is not frequently used when there are a plurality of transmittable lines, and when there is only one transmittable line, that line is naturally extracted.

In this way, using the extracted trunk line,
The other party's telephone number is sent to the other party's PBX via the relay line for relay connection (at step 70). When the partner PBX calls the terminal with the partner telephone number and the partner terminal responds, a call path is established between the calling terminal and the partner terminal via the relay line, and a call state is set (71).

[0022]

According to the present invention, in a communication using a trunk line of a PBX exchange, a call type in which each line can be preferentially used such as a data system and a voice system or a data system + voice system in a specific time zone By allocating, even if the voice (data) communication is concentrated, the data (voice) communication can be secured. As a result, the problem of busy data calls can be solved and work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a network configuration diagram of a PBX and a plurality of PBXs in which the present invention is implemented.

FIG. 3 is an explanatory diagram of data stored in a memory.

FIG. 4 is a diagram showing a specific example of a trunk line routing table.

5 is a diagram in which the contents of the table of FIG. 4 are expressed as a table.

FIG. 6 is a diagram showing a control flow of the embodiment.

FIG. 7 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 exchange 2 communication path (NW) 3 control section 3a terminal type identification means 3b route identification means 3c time detection means 3d available line determination means 3e connection control means 3f timer 4 memory section 4a terminal table 4b relay line routing table 5 terminal 6 Relay line

Claims (3)

[Claims] 1. A trunk line routing control table for a trunk line selection control system, wherein a memory unit connected to a control unit of the switch unit registers a call type that can be used for each time trunk line by time zone. When the terminal makes a call, the control unit identifies the type and time of the calling terminal, and identifies the line corresponding to the identified route based on the partner number. The selection control of the trunk line in the exchange characterized by determining the line that can be used by the terminal that made the call, and connecting the calling terminal through the determined trunk line when the available line is judged method. 2. The terminal type identification according to claim 1, wherein the memory section is provided with a terminal table storing type information of each terminal, and the control section identifies the type of the calling terminal by referring to the terminal table. Means, a route identification means for identifying the connection destination route based on the other party's number input by the terminal, a time detection means for detecting the current time, and a relay line available in the relay lines of the connection destination route at the current time In the switching system, characterized in that the calling terminal is connected to the terminal of the partner switching system by using the available line discriminating means for discriminating the calling line by referring to the trunk line routing table. Relay line selection control method. 3. The mixed system according to claim 1, wherein a voice type, a data type, and both a voice type and a data type are included as the type of the terminal and the type of the terminal and the call type set in the relay line routing table. When three types of systems are provided and the available line discrimination means is set to the mixed system, the available line types registered in the trunk line routing table can be used regardless of the type of the calling terminal. A selection control method of a trunk line in an exchange characterized by making a judgment.