JPH0379916B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] In a simple exchange telephone device, the type of telephone key operated on the telephone set during a call to an outside line is identified, and if the identification result is an outside line telephone key, the outside line under call is placed on self-hold. If the identification result is an extension phone key, the outside line in progress is placed on common hold.

[Industrial application field]

The present invention relates to an improvement in an automatic hold system in a simple telephone exchange.

Small businesses, workplaces, etc. accommodate multiple telephones and multiple central office lines or private branch exchange extensions (hereinafter collectively referred to as outside lines), allowing any telephone to make calls to the outside using any outside line. Simple exchange telephone devices that enable mutual telephone calls have been widely adopted.

Each telephone housed in such a simple exchange telephone device is equipped with an outside line key corresponding to an outside line and an extension key for mutual phone calls, and by operating the outside line key on any telephone, you can connect to the corresponding outside line and make a call. It becomes possible to make incoming calls, and by operating the extension telephone key, it becomes possible to make calls between telephones housed in the simple exchange telephone device.

Furthermore, this type of simple exchange telephone device usually has a hold function in which a telephone that is talking to an outside line temporarily puts the call on hold and then talks to another outside line or telephone. In addition, when the telephone puts an active outside line on hold by operating a dedicated telephone key, etc., and when the telephone automatically puts the active external line on hold by operating another external line telephone key or an extension telephone key to which the telephone is trying to make a call. There are cases where the system is put on hold, and the latter is called automatic hold.

A self-hold function that allows re-calling to an outside line placed on hold only to the phone that previously made the call, and a feature that allows any phone to re-call, not just the phone that previously made the call. Common reservations are being put into practice. Self-holding allows the call to be made smoothly because the telephone that was making the call before the call is placed on hold, and common holding allows the call to be transferred to another telephone, each of which has its advantages.

Therefore, it is desired that such self-reservation and common reservation can be easily selected and used.

[Conventional technology]

FIG. 4 is a diagram showing an example of a conventional simple exchange telephone device, and FIG. 5 is a diagram illustrating a conventional automatic hold process.

In FIG. 4, the simple exchange telephone device 100 has two telephones 1 (in order to distinguish between the telephones 1, they are indicated as 1-1 and 1-2, the same applies hereinafter), two outside lines 2, and are accommodated in the extension circuit (EKC) 3 and outside line trunk (BWT) 4, respectively.

Each telephone 1 is provided with outside line keys C1 and C2 corresponding to each of the outside lines 2-1 and 2-2, and is also provided with an extension key I for mutual communication between the telephones 1. Further, the central control device (CC) 7 is provided with a self-holding mechanism 71 and a common holding mechanism 72.

When the telephone 1-1 operates the outside line key C1 corresponding to the open line 2-1, the central control unit 7 detects the operation of the outside line key C1 via the extension circuit 3-1, and connects the network (NW). )5, a call path p1 connecting the extension line circuit 3-1 and the outside line trunk 4-1 is set, and the outside line trunk 4-1 is connected to the outside line 2-1.
The transmission state is set to . Thereafter, the telephone 1-1 calls the called party via the outside line 2-1, and a conversation becomes possible.

In this state, while the telephone 1-1 is talking to the outside line 2-1, a call arrives on another outside line 2-2, and when the telephone 1-1 that is currently talking operates the outside line key C2 to answer, the central The control device 7 identifies the operation of the outside line telephone key C2 via the extension circuit 3-1 (step 5 in FIG.
S1), and since telephone 1-1 is busy, it is determined that automatic hold has been requested (step S2);
Furthermore, it is monitored whether the outside line key C2 has been operated twice within a predetermined time period (steps S4 and S5).

As a result of monitoring, if the operation is performed twice, the self-holding mechanism 71 is activated (step S6).

The self-holding mechanism 71 puts the call path p1 set in the network 5 on hold, sets new call paths p2 and p3, and puts the currently active outside line 2-1 on hold tone trunk (WT) 6. Connect the extension circuit 3-1 to the outside line trunk 4-2, and connect the extension circuit 3-1 to the outside line trunk 4-2.
-1 is set to self-holding state. As a result, the hold tone is returned from the hold tone trunk 6 to the outside line 2-1, which was currently talking to the telephone 1-1.
-1 becomes able to respond to an incoming call from outside line 2-2.

In this state, the telephone 1-1 again uses the outside line key C.
1, the central controller 7 connects the extension circuit 3-
1, the operation of the outside telephone key C1 is detected, and the communication paths p2 and p set within the network 5 are detected.
3 is released, the held call path p1 is reset, and the extension circuit 3-1 and the outside line trunk 4-1 are connected. As a result, telephone 1-1 has an external line 2 on hold.
You can now talk to -1.

Note that even if the outside line key C1 is operated on another telephone 1-2 to the outside line 2-1 which is in a self-holding state, the central control unit 7 does not enable the outside line 2-1 to respond.

Also, as a result of monitoring in steps S4 and S5,
If the outside line key C2 is not operated twice within a predetermined time period, the common reservation mechanism 72 is activated (step S7).

The common hold mechanism 72 releases the call path p1 set in the network 5, sets new call paths p2 and p3, connects the currently active outside line 2-1 to the hold tone trunk 6, Also, extension circuit 3-1
is connected to the outside line trunk 4-2, and the outside line 2-1 is set to a common hold state. As a result, telephone 1-1
The hold tone is returned from the hold tone trunk 6 to the outside line 2-1, which was currently talking to the outside line 2-1, and the telephone set 1-1 becomes able to respond to the incoming call from the outside line 2-2.

In this state, when either of the telephones 1-1 and 1-2 operates the outside line key C1, the central controller 7
detects the operation of the outside line telephone key C1 via the extension circuit 3-1 or 3-2, releases the communication paths p2 and p3 set in the network 5, sets the communication path p1 or p4, and connects the extension line. The circuit 3-1 or 3-2 is connected to the outside line trunk 4-1. As a result, the telephone 1-1 or 1-2 on which the outside line key C1 has been operated becomes able to talk to the outside line 2-1 that is on hold.

On the other hand, when the telephone 1-1 operates the extension telephone key I to make a call to another telephone 1-2 while the telephone 1-1 is talking to the outside line 2-1, the same process as when the telephone key C2 is operated is performed. When operated twice, the self-holding mechanism 71 is activated, and when operated once, the common holding mechanism 72 is activated.

[Problem that the invention seeks to solve]

As is clear from the above explanation, in the conventional simple exchange telephone device, in order to selectively use the self-holding mechanism 71 and the common holding mechanism 72, it is necessary to control the number of operations of the outside line telephone key C or the extension telephone key I. The operation is complicated and the selection period is limited, so there are problems with the lack of convenience.

[Means for solving problems]

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

In FIG. 1, 100 is a simple switching telephone device;
1 is a telephone and 2 is an outside line.

The simple exchange telephone device 100 has an outside line 2 in progress.
There are provided a self-holding mechanism 71 that allows only the telephone 1 that was previously on a call to make a call again, and a common hold mechanism 72 that allows any telephone 1 to make a call again on an outside line 2 that is currently being called.

Further, each telephone 1 is provided with an outside line key C for making an outside line call, which corresponds to each outside line 2, and an extension key I for making calls between the telephones.

Reference numeral 200 is a hold selection means provided according to the present invention, which identifies the type of telephone key operated on the telephone 1 during a call to the outside line 2.

[Effect]

When the telephone key type identified by the reservation selection means 200 is an extension telephone key C, the self-retention mechanism 71 is activated, and when the telephone key type identified by the reservation selection means 200 is an extension telephone key I, the common The reservation mechanism 72 is activated.

Therefore, a telephone that made a call to another outside line while talking to an outside line must always resume the call with the held outside line, and a telephone that made a call to another phone while talking to an outside line must It becomes possible to transfer other telephones to the outside line, and the operation of the outside line telephone key or the extension telephone key only needs to be done once, thereby improving the convenience of the simple exchange telephone device.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram illustrating a simple switching telephone device according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating an automatic hold process according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 2, in addition to a self-holding mechanism 71 and a common holding mechanism 72, a holding selection mechanism 73 is provided as a holding selection means 200 in the central control unit (CC) 7.

In FIGS. 2 and 3, while telephone 1-1 is talking to an outside line 2-1, a call arrives on another outside line 2-2, and in order for telephone 1-1, which is currently talking, to answer, outside line telephone key C2 , the central control device 7 identifies the operation of the outside line telephone key C2 via the extension circuit 3-1 (step S11 in FIG. 3), and since the telephone 1-1 is busy, automatic hold is requested. The self-retention mechanism 71 is selected and activated based on the external telephone key C2 identified in step S11 (step S13).

The self-retention mechanism 71 receives the outside line 2 in the same manner as described above.
-1 is set to self-holding state. As a result, only the telephone 1-1 is able to resume the call with the on-hold outside line 2-1, and the other telephone 1-2 becomes unable to respond.

Note that even if telephone 1-1, which is currently talking to outside line 2-2, operates the outside line telephone key C1 to answer the on-hold outside line 2-1 again, outside line 2-2 will go into a self-hold state in the same process. Set.

On the other hand, when the telephone 1-1 operates the extension telephone key I in order to make a telephone call to another telephone 1-2 while the telephone 1-1 is talking to the outside line 2-1, the central control device 7 sends the extension telephone key I via the extension circuit 3-1. detects the operation (step S11),
Since the telephone 1-1 is busy, it is determined that automatic hold is requested (step S14), and the common hold mechanism 72 is activated based on the extension key I identified in step S11 (step S15).

The common reservation mechanism 72 receives the outside line 2 in the same manner as described above.
-1 is set to common pending status. As a result, the telephone 1-2 can also talk to the outside line 2-1 on hold, and the incoming call from the outside line 2-1 can be transferred from the telephone 1-1 to the telephone 1-2.

Note that the phone 1-1 that is talking to the phone 1-2 is
When the outside line key C1 is operated and the outside line 2-1 that is on hold is answered again, the telephone 1-2 enters the self-hold state, and the telephone 1-1 that is talking with the outside line 2-1
, operates extension key I to call 1-2, which is on hold.
Even if the outside line 2-1 is responded to again, the outside line 2-1 is placed in a common hold state.

As is clear from the above description, according to this embodiment, when the telephone 1-1 operates the outside line telephone key C1 during a call with the outside line 2-1, the self-holding mechanism 71 is activated and the outside line 2-1 is connected to the outside line 2-1. telephone 1-1 will always answer the call again, and telephone 1-1 will be connected to outside line 2.
If the extension telephone key I is operated during a call to the outside line 2-1, the common hold mechanism 72 is activated, and the outside line 2-1 is answered by another telephone 1-2, allowing transfer.

However, the telephone set 1-1 can select the hold state by operating the outside line key C2 or the extension line key I only once.

Note that FIGS. 2 and 3 are only one embodiment of the present invention, and the number of telephones 1 and outside lines 2 that can be accommodated is not limited to what is shown in the figures, and many other modifications may be made. However, the effects of the present invention remain the same in either case.

〔Effect of the invention〕

As described above, according to the present invention, in the simple exchange telephone device, a telephone that has made a call to another outside line during a call to an outside line must always resume the call with the held outside line, and A telephone that has made a call to another telephone during the call can transfer the other telephone to an outside line, and the operation is simplified and the convenience of the simple telephone exchange device is improved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing a simple switching telephone device according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating an automatic hold process according to an embodiment of the present invention. 4 is a diagram showing an example of a conventional simple exchange telephone device, and FIG. 5 is a diagram illustrating a conventional automatic hold process. In the figure, 1-1 and 1-2 are telephones, 2
-1 and 2-2 are outside lines, 3-1 and 3-2 are extension circuits (EKC), 4-1 and 4-2 are outside line trunks (BWT), 5 is network (NW), 6
is a hold music trunk (WT), 7 is a central control unit (CC), 8 is a storage device (MEM), 71 is a self-hold mechanism, 72 is a common hold mechanism, 73 is a hold selection mechanism, 100 is a simple exchange telephone device, 200 represents a hold selection means, C1 and C2 represent an outside line telephone key, and I represents an extension telephone key.

Claims (1)

[Scope of Claims] 1. An outside line telephone key C for making an outside line call, which accommodates a plurality of telephones 1 and a plurality of outside lines 2, and each of the telephones 1 corresponds to each of the outside lines 2, and the telephone 1
In the simple exchange telephone device 100, which is equipped with an extension telephone key I for mutual calls, a holding selection means 20 identifies the type of telephone key operated on the telephone 1 during a call with the external line 2.
0 is provided, and a self-holding mechanism 71 that allows only the telephone 1 that was previously in use to re-call the outside line 2 that is currently in use, in accordance with the telephone key type identified by the hold selection means 200; This automatic hold system is characterized in that any one of the common hold mechanisms 72 is selected and activated to enable any telephone set 1 to re-call an outside line 2 inside. 2. When the telephone key type identified by the hold selection means 200 is the extension telephone key C, the self-retention mechanism 71 is activated, and when the telephone key type identified by the hold selection means 200 is the extension telephone key I. 2. The automatic reservation system according to claim 1, wherein said common reservation mechanism 72 is activated.