JPH0241063A - Private branch of exchange - Google Patents

Abstract

PURPOSE:To revise freely whether an idle DN is acquired or an incoming DN is acquired by providing a means revising control information stored on a table in the service giving plural extension telephone numbers DN to one extension telephone set. CONSTITUTION:When an SEL key 14a of a key telephone set 1a is depressed, a central processing unit 6 reads control information from a memory area corresponding to a telephone set 1a of a table built in a storage device 7. In this case, the central processing unit 6 revises the information into 'incoming DN automatic acquisition' when the information represents 'idle DN automatic acquisition' to light a built-in light emitting diode on the SEL key 14a of the telephone set 1a. Conversely, when the read information is 'incoming DN automatic acquisition', the information is revised into 'incoming DN automatic acquisition' to extinguish the light emitting diode of the SEL key 14a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a private telephone exchange that allows setting of a plurality of extension telephone numbers for one extension telephone.

(Prior Art) As a service function of a private branch telephone exchange, multiple extension telephone numbers (hereinafter abbreviated as DN) are set for one extension telephone, and the extension telephone is set to one of the plurality of ON numbers when the extension telephone goes off-hook. There is an automatic ON capture function that automatically captures an idle ON or an ON in an incoming call state, and makes or receives a call.

(Problem to be Solved by the Invention) However, with the conventional automatic acquisition function, whether to acquire an empty DN or an incoming DN is uniquely determined by the setting state of the extension telephone at the time of installation. Therefore, there was a problem in that the user of the extension telephone could not switch between them at will.

An object of the present invention is to provide a private branch exchange that allows the user of an extension telephone to easily switch between capturing a vacant DN and capturing an ON state of incoming call.

[Configuration of Komei] (Means for solving the problem) The present invention provides a third table that stores control information that determines whether to capture an extension telephone number in an idle state or an extension telephone number in an incoming call state. and a control means for determining the control information stored in the third table and capturing a vacant extension telephone number or an incoming extension telephone number according to the control information; The above object is achieved by providing a control information changing means for changing the control information stored in the table No. 3.

(Function) The control information changing means installed in the extension telephone
Change the control information stored in the table. Then, according to the new control information, #j of the vacant telephone numbers or telephone number B of the incoming calls are captured.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is an overall configuration diagram of a private branch telephone exchange showing an embodiment of the present invention, and includes a plurality of key telephones (FKT) 1a to 1.
b are connected to a communication path network (SW) 3 via line circuits (LC) 2a to 2b, respectively. The communication path network 3 includes central office line trunk circuits (TRK) 48 to
4b to the central office line. These communication path networks 3. The line circuits 2a to 2b and the office line trunk circuits 4a to 4b are connected to a central processing unit (CG) 6 via a control data bus line 5, and are connected to a storage device (MEM).
) Data is transmitted and received with the central processing unit 6 which performs control operations using the data stored in the 7, and calls are made between the key telephones 1a and 1b and between the key telephone and the central office line via the network 3. configured to form a path.

The key telephones 1a to 1b include, for example, a handset 11 and its hook □ side 12, as shown in FIG. Dial frame 13
．． Equipped with various Zerbisky 14 etc. The service key 14 includes an SEL key 14a for switching ON automatic capture.

In the above configuration, a case will be described in which a dial operation is performed from EKTla to another extension telephone, EKTlb.

First, when EKTla makes a call, the call information is transmitted to the central processing unit 6 via the line circuit 2a. The central processing unit 6 sends the call information to the network (SW).
3 is in a connectable state, it sends a dial tone to EKTla to indicate that dialing is possible.
Inform the person handling LA. vrl this dial tone
The dial information given from the EKTla is transmitted to the central processing unit 6 via the line circuit 2a. When the central processing unit 6 receives the required number of digits of the dial information, it determines whether the connection is between extension lines or a central office line. If the dial destination is an extension, check whether the destination number is free. When the telephone is free, a ring tone is sent to the telephone with the destination number, and a ringback tone is sent to the caller. On the other hand, in the case of connection to a central office line,
Select a free trunk and connect the calling telephone terminal to the free trunk.

Next, a case where EKTla automatically captures a vacant DN or an ON state of receiving a call will be described.

EKTla can own multiple DNs. E.K.
The DN owned by Tla is recorded in advance in a table 70 formed in the storage device 7.

That is, a table 70 as shown in FIG. 3(a) is formed in the storage device 7, and this table 70 has a plurality of DNs DNa, DNb, . . . corresponding to each of the plurality of EKTa to EKTn.・It is registered in advance as follows. Here, it is possible to register as many DNs as possible for each EKT in the table 70, but in the unregistered area "F
Information "F" is set.

In addition, a table 71 as shown in FIG. 3(b) is formed in the storage device 7, and this table 71 stores the status of the idle 9 incoming calls for each DN set in the above table 70. It has become.

Note that the storage contents of the table 71 include 00'' being empty and OA
" is configured to represent each state of incoming call, and when the DN is not registered, it is represented by information of ""FF".

Furthermore, a table 72 as shown in FIG. 4 is formed in the storage device 7, and this table 72 has an
The configuration is such that control information determining whether to capture the incoming call state or to capture the ON state of the incoming call is stored for each EKT.

Here, CD=”ON captures the free DN, and CD=”
“1” indicates that the ON state of incoming call is captured.

FIG. 5 is a flowchart showing the operation when EKTla automatically captures an idle state ON. When EKT1a goes off-hook, the central processing unit 6 detects that EKTla has gone off-hook through the same path as above. do(
Step 401). Central processing unit! 6 reads out the DN registered in EKTla from the table 70 (step 404).

Next, in order to check the ON status, from table 71
The state of N is read out (step 406).

If the DN status is empty and the network (SW) 3 is connectable (step 4), the central processing unit 6
07), sends a dial tone to EKTI a (step 408). However, if the state of the DN is busy, the central processing unit 6 reads the next DN registered in the table 70 (steps 409, 403, 40).
4) Check the status of that DN (step 406.40
7).

The central processing unit ff6 examines all the ONs possessed by EKTla, and if it cannot find a free DN, it sends a visit tone to EKTla through the above-mentioned route (step 410).

Next, the case where EKTla automatically captures the DN in the incoming call state will be described with reference to the flowchart of FIG.

First, when EKTla goes off-hook, the central processing unit fff6 detects that EKTla has gone off-hook through the path (step 501).

Next, the central processing unit 6 reads the DN that EKTla has from the table 70 (step 504), and the DN
Read the status of from table 71 (step 506)
. If the state of the read DN is "incoming call" (step 507), the central processing unit 6 connects EKTla with the incoming call (step 508).If the state of the DN is "incoming call"
If not, the next DN registered in table 70
Steps 509, 503, and 504>, and its status is checked (step 506). The central processing unit 6 is E
As a result of checking all the ONs that KTla has, “Incoming call”
If no ON is found, the above-mentioned process of capturing an empty ON is performed (step 510).

Next, the operation of capturing a vacant ON or incoming DN according to the contents of the table 72 will be described with reference to the flowchart of FIG.

First, when EKTla goes off-hook, the central processing unit 6
detects that EKTla has gone off-hook (step 601). The central processing unit W16 reads the control information CD from the memory area corresponding to EKTla of the table 72 that stores the automatic capture type of DN. The central processing unit 6 determines whether to capture an empty ON or an "incoming" DN from the read information CD (step 602
).

When capturing a free DN, the central processing unit 6 reads the DN that EKTla has from the table 70, and
It is checked whether the status of N is vacant (step 603). If a vacant DN is found (step 604), the central processing unit 6 sends a dial tone to EKTla (step 605). However, if you check all the DNs that EKTla has and cannot find a free DN, then
A busy tone is sent to Tla (step 606).

On the other hand, when capturing the "incoming" DN, the central processing unit 6 reads the DN that EKTla has from the table 70, and checks from the table 71 whether the DN is in the "incoming" state (step 607). . If the DN of the incoming call is found there (step 608), the EKT
Connect L a with the incoming call (step 609), check all the DNs that EKTla has, and if the "incoming" DN cannot be found, perform the process of capturing an empty DN ( Step 603).

Next, a description will be given of switching the acquisition process of an empty DN or an incoming DN.

Switching between idle and incoming calls for automatic DN acquisition can be performed using the SEL key 14a provided on the EKTla. When the SEL key 14a of EKTla is pressed, the central processing unit eI6 reads the control information CD from the memory area corresponding to EKTla in the table 72. If the read information 111cD indicates "Automatic capture of vacant DN", the central processing unit 6 changes the information CD to "Automatic capture of incoming DN" and presses the SEL key 14a in EKTla.
A command is sent to turn on the built-in Brahma diode. Conversely, if the read information CD is "Automatically capture incoming DN," change the information CD to "Automatically capture vacant DN" and issue a command to EKTla to illuminate the light emitting diode of SEL key 14a. Send. The person handling EKTla is SE.
From the light emitting diode of the L key 14a, it is possible to know which ON capture function is currently being touched.

[Effects of the Invention] As explained above, according to this invention, a user of an extension telephone can easily change from capturing a vacant DN to capturing a called DN, or from capturing a called DN to capturing a vacant DN. This makes it possible to provide a private branch exchange system with high serviceability.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a private telephone exchange n showing an embodiment of the present invention, Fig. 2 is a configuration diagram of a key telephone, and Fig. 3 is a table storing a plurality of DNs and the status of each DN. A configuration diagram of a table, FIG. 4 is a configuration diagram of a table storing control information for switching the DN capture function, and FIG. 5 is a flowchart showing the operation when capturing a vacant ON.
FIG. 6 is a flowchart showing the operation when capturing the DN of an incoming call, and FIG. 7 is a flowchart showing the operation when capturing the ON according to the control information. 1a-1b...Key telephone, 28-2b-Line circuit, 3...Speech path network, 4a-4b...Station line trunk circuit, 5...Control data bus line, 6...
... Central processing unit, 7... Storage device, 11... Handset, 12... Hook mechanism, 13... Dial tsubaki, 14... Service key 14a... SEL key
70-72...table. Figure 1 Figure 2 (G) (b) Figure 3 Figure 4

Claims (1)

[Claims] A first table that stores a plurality of telephone extension numbers set for one telephone extension, and a second table that stores idle and incoming calls for each of the plurality of telephone extension numbers that are set. table, and captures an extension telephone number in a vacant state or an extension telephone number in an incoming state among a plurality of extension telephone numbers registered in the first table when an extension telephone goes off-hook, and the captured extension In a private telephone exchange that allows calls to be made and received using a telephone number, a third part that stores control information that determines whether to capture an extension telephone number in a vacant state or an extension telephone number in an incoming state;
a table; a control means for determining the control information stored in the third table and capturing a vacant extension telephone number or an incoming extension telephone number in accordance with the control information; and control information changing means for changing control information stored in the third table.