JPS624901B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic dialing system that can effectively send a dialing code to a station when waiting for an empty trunk.

In the case of a private branch exchange, all central office line trunks may become busy as the call volume increases. When the extension terminal tries to make a call when all lines are busy, the extension terminal sets the switchboard to wait for a vacant trunk by dialing a special number or operating a special key, and as soon as a vacant trunk becomes available, it receives a vacant trunk notification and makes the call. Automatic waiting for available trunks is performed.

On the other hand, in the above-mentioned private telephone exchange, speed dials and dial codes, which are phone numbers, are registered in advance by special number dialing or special key operations, and automatic dialing that automatically dials the above dial code in response to the speed dial from the extension terminal. Functions are being added.

These functions have many effects such as improving exchange services.

Now, FIG. 1 shows a schematic configuration of an exchange system equipped with these functions, and 1 is the main body of an electronic exchange such as EPABX. However, the lever exchanger body 1
A plurality of extension terminals (telephones) 3a to 3n are connected to the terminals via subscriber circuits 2a to 2n, and a plurality of office lines are connected to the terminals via office line trunk circuits 4a to 4n. Further, the central control unit (cc) 5 sends and receives data to and from the subscriber circuits 2a to 2n and trunk circuits 4a to 4n, and also sends and receives programs and control data to and from the memory 6, and sends and receives data to and from the switchboard. It controls the replacement operation of the main body 1.

Now, in such an exchange, the extension terminal 3a
When making a central office line call from ~3n, this is generally done by inputting a trunk access code, followed by a dialing code. At this time, the exchange main body 1 receives the trunk access code, seizes one of the vacant trunk circuits 4a to 4n, and transmits a dial code to the central office line via the trunk circuits 4a to 4n. In addition, when the automatic dialing function described above is used, as shown in FIG. After the access code is read and the trunk circuit is captured, the dial code is transmitted to the central office line as shown in C.

However, when a call is made to a central office line after the above-mentioned automatic waiting for a vacant trunk is performed, the following problem occurs. That is, after receiving a waiting notification for a vacant trunk, if the user responds to the notification and inputs the trunk access code and dial code, it takes time from the response to receive the trunk access code and seize the vacant trunk. During this time, there is a possibility that the empty trunk will be used again due to an incoming call from the central office line. Therefore, in the past, a device has been devised in which an empty trunk is detected at the time of automatic rendezvous and at the same time the empty trunk is captured, and a dial code is input from the terminal following the response to the empty trunk notification and sent.
However, if you try to use automatic dialing using speed dialing or the like following the response during automatic waiting for an empty trunk, as shown in Figure 2b,
Since the pre-registered call information B is sent one after another when an empty trunk is already captured, all the call information including the trunk access code is sent to the central office line as shown in D in Figure b. As a result, there was a problem where incorrect dialing was made.

The present invention has been made in consideration of these circumstances, and its purpose is to provide a practical system that can always stably and accurately make central office line calls using automatic dialing, regardless of whether an empty trunk is automatically rescheduled or not. The objective is to provide a highly efficient automatic dialing system.

In other words, the object is to provide an automatic dialing system that can easily dial a desired dial code to a central office line without using separate speed dials with different systems for making a normal call and automatically waiting for an empty trunk. .

The outline of the present invention is to configure the format of call information to be registered as automatic dialing information by a trunk access code, a dialing code, and a special code inserted between these codes. detect the code,
Only the dialing code whose data is separated by a special code is transmitted over the central office line, so that the dialing code can always be transmitted correctly even when automatically waiting for an empty trunk.

At the same time, by using this method, it is possible to unify call information during normal automatic dialing and during automatic dialing when waiting for an empty trunk, simplify automatic call control, and effectively achieve the above-mentioned purpose. This has been achieved.

Hereinafter, a method according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a diagram showing the concept of automatic dial processing in the embodiment system, and FIGS. 4 and 5 are diagrams showing its control form.

In this system, the calling information registered by automatic dialing includes a trunk access code X, a dialing code Y to be sent to the station, and a special code Z inserted between these codes Consisted of. This outgoing call information is read out from the memory 6 by abbreviated dialing operations on the extension terminals 3a to 3n or by specifying automatic dialing by operating specific keys. Then, the central control device 5 detects the special code Z in this read out transmission information,
Trans access code X and dial code Y, which are classified by this special code Z, are recognized independently. Then, by using the trunk access code X, the central office line trunk circuits 4a to 4 are
When one of the number n is acquired, or when an empty trunk is acquired by automatic empty trunk waiting, a control operation is performed such that only the recognized dial code Y is transmitted to the central office line via the trunk circuit.
Also, whether or not to capture an empty trunk by using the trunk access code X is determined by, for example, the extension terminal 3.
A flag is set in the storage area corresponding to a to 3n, and when the flag becomes "1", it is determined that the trunk has already been captured in response to the automatic waiting for an empty trunk, and the above flag becomes "0". In some cases, it may be determined that this is a normal automatic dialing, and an empty trunk may be acquired according to the access code X mentioned above.

Information input from the extension terminals 3a to 3n is detected by the input detection program 11 as shown in FIG. 4, and is passed to the call processing program 13 via the input queue 12. At this time,
When dialing is required for the central office line, data is passed to the dialing program 15 via the dialing queue 14. When the extension terminals 3a to 3n operate automatic dialing or speed dialing, a dial string is written in the input queue 12 in the call processing program 13.

FIG. 6 shows the processing flow of this call processing program 13. That is, when automatic dialing data or abbreviated dialing data is input to the call processing program, the content of the above-mentioned flag corresponding to that extension terminal is first referred to. Then, if the flag is "1", that is, automatic waiting for a vacant trunk is being performed, the flag is first reset to "0", the above-mentioned special code is detected, and the dial number delimited by this detected special code is set. Detects the code and waits for input queue 1
Write in 2. If the flag becomes "0", the registered data string indicated by automatic dialing or speed dialing is written into the input queue 12 as is. Then, by executing the call processing program 13, the dial data written in the input waiting queue 12 is transferred to the dial sending program 15.
By moving to , and making a dial call, it becomes possible to send only the dial code to the central office line.

In this way, by processing the outgoing call information in the table, just by setting a special code in the outgoing information in advance, the same automatic or It becomes possible to use speed dialing.
In addition, it always ensures the acquisition of empty trunks,
Only the dial code can be sent to the central office line via the same trunk. Therefore, the extension terminals 3a to 3
n, the service function of the exchange can be effectively used through simple operations, and has an extremely large practical advantage.

In the case of a private branch exchange, it may take a certain amount of time until the other party's trunk-connected exchange becomes capable of receiving dial calls. If the special code is used for this time adjustment, there is no need to insert a dialing delay code immediately after the trunk access code, which has a great practical advantage.

As described above, according to this system, it is possible to effectively send out only the dial code to the central office line regardless of whether or not there is automatic waiting for vacant trunks. There is no need to make them different. Therefore, it is possible to provide an automatic dialing system which is not only easy to handle and whose functions can be fully utilized, but also has a simple processing flow and is extremely effective in practical use.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a private branch exchange system, FIGS. 2a and 2b are diagrams showing a conventional dialing code sending form to a central office line, and FIG. 3 is a diagram showing a dialing code sending form to a central office line according to the system of the present invention. , FIG. 4, and FIG. 5 are diagrams showing a control processing flow showing an embodiment of the system of the present invention. 1... Exchange main body, 2a to 2n... Subscriber circuit, 3a to 3n... Extension terminal, 4a to 4n... Office line trunk circuit, 5... Central control unit, 6... Memory, 11... Input detection Program, 12...Input waiting queue, 13...Call processing program, 14
...Dial sending queue, 15...Dial sending program, X...Trunk access code, Y
...Dial code, Z...Special code.

Claims (1)

[Claims] 1 Register and store automatic dialing information consisting of a trunk calling code, dialing code, and a special code inserted between these codes, read out the automatic dialing information using the automatic dialing operation of the telephone, and use the automatic dialing information according to the trunk calling code. After capturing an empty trunk, the dial code is sent to the office via this trunk, and when an empty trunk is captured due to the call back setting for all busy lines on the office line, the special code of the automatic dialing information is detected, and this An automatic dialing system characterized in that only the dialing code stored after the special code is extracted and sent from the trunk to the station.