JP5018188B2 - An extension telephone having a function of connecting to an outside line - Google Patents

Description

  The present invention relates to an extension telephone having a detour outside line connection function.

  In a telephone system in which the normal line and the bypass line are different, if the main unit stops operating for maintenance or if a power failure occurs, the call on the normal line is forcibly disconnected and the telephone Although the line is switched to the detour line, it is necessary to make a call again, and when calling by incoming call, it is necessary to check the telephone number of the other party.

  Also, when a failure is recovered during a call using a bypass line at the time of a failure, the call is not switched to the normal use line unless the call state is maintained on the bypass line and the call is once disconnected.

From Patent Document 1 and the like, it is known that a communication path is secured by using different lines in normal time and at the time of failure. However, as described in Patent Document 1, a call on a normal use line is also known. Is forcibly disconnected when a failure occurs, and after the failure is recovered, the call is terminated and then switched to the normal line.
JP 2001-257797 A

  In the conventional method, the call on the normal line is forcibly disconnected when a failure occurs, and the function of the main unit becomes unusable. Therefore, the telephone number of the other party cannot be known. In order to use the normal line even after recovery from a fault, the call must be terminated once again in order to terminate the call. There is a drawback that the service (voice mail etc.) provided cannot be used immediately.

  The problem to be solved by the present invention is that, when the function of the main unit becomes unusable, the telephone number of the other party that has been stored in advance is used, and the normal use from the detour outside line without terminating the call after recovery from the failure It is to switch the line to the line.

The extension telephone having the bypass external line connection function of the present invention is an extension telephone connected to the extension of the main apparatus that accommodates the external line and the extension, and the other party telephone number that stores the other party telephone number information or the other party address information during the call Storage means, detour outside line connection means for connecting to a detour outside line bypassing the main apparatus, an abnormality detection means for detecting an abnormality or power failure of the extension line or main apparatus, and recovery detection for detecting recovery of the extension line or main apparatus And the other party telephone number information or the other party address stored in the other party telephone number storage means when a predetermined time elapses or a specific operation is detected when the abnormality detection unit detects an abnormality during a call via the extension. The call is automatically made via the detour outside line with information, and the restoration detection means restores the extension or the main unit during the call made automatically via the detour outside line. If issued, by performing a call preparing for via the extension, and displays the effect of the restoration ready, the specific operation to select whether the call interruption, to interrupt the call is diverted for lines When the call is continued and the call is executed, the line used for switching from the detour outside line to the extension is selected using the other party telephone number information or the other party address information stored in the other party telephone number storage means. It is characterized by making an automatic call.

  According to the present invention, when the line or the main unit becomes abnormal during a call on the normal use line, an automatic call is made via the detour line, so the detour outside line is used after checking the telephone number of the other party. Saves you the trouble of re-calling. Furthermore, even when a failure is recovered during a call on the bypass line, the call can be transferred from the bypass line to a call on the normal use line by automatic call, so that the function of the main device can be used.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a block configuration of a telephone system having an extension telephone 2 according to a first embodiment of the present invention. A main apparatus 1 is an external line for connecting to a telephone line 4 provided by a communication carrier as a normal use line. The power supply state is detected from the IF control unit 11, an extension IF control unit 13 that accommodates an extension telephone terminal as an extension, an external line IF and an extension IF, an exchange control unit 12 that controls call connection between extensions, and a power supply unit 16. It comprises a power recovery / power failure detection unit 15 and a device control unit 14 that controls the entire device.

  Further, the extension telephone 2 having the function of connecting to an outside line according to the present invention includes an extension control unit 23 for operating as an extension terminal of the main device 1 and an extension monitoring unit for detecting whether the operation of the extension IF control unit 13 is normal or abnormal. 24, a detour line control unit 21 for connecting to the detour line 3 of the telephone service provided by the communication carrier at the time of failure, and a detour line monitoring unit 22 for detecting whether the detour line 3 is normal or abnormal, Line connection information memory unit 25 in which information for connection / transfer to the line is stored, device control unit 26 managing each detection / transfer unit and control unit, and voice CH (channel) switching for switching the line used Unit 211, a call function unit 29, which is a general telephone function, a dial function unit 210, and an LCD display unit 28, and is connected to main apparatus 1 through normal use extension 5.

  During normal operation, the extension IF control unit 13 of the main device 1 and the extension control unit 23 of the extension telephone 2 having a bypass connection function operate together, and the normal use line 4 is the external IF control unit 11 of the main device 1. -The exchange control unit 12-The extension IF control unit 13 is connected to the extension control unit 23 of the extension telephone 2 having the function of connecting to the outside line at the normal use extension 5. At this time, the function of the detour line control unit 21 is stopped.

  When the operation of the main device 1 is stopped for maintenance, or when a failure occurs due to a power failure or the like, the functions of the control units of the main device 1 are stopped, and the normal use line 4 cannot be used. At that time, the extension monitoring unit 24 detects the stop state of the main apparatus 1 and functions the bypass line control unit 21 to connect to the bypass line 3.

  However, the call on the normal use line 4 is forcibly disconnected when a failure occurs, and the function of the main unit 1 becomes unusable, so the telephone number of the other party is not known. I need to call again. Further, even if the failure of the main device 1 is recovered during a call on the bypass line 3, the call on the bypass line 3 is continued during the call, and various functions of the main device 1 are used until the call is ended. It becomes impossible.

  Therefore, in the present invention, when the main apparatus 1 stops operation for maintenance during a call on the normal use line 4, or when a failure occurs due to a power failure or the like, the power recovery / power failure detection unit 15 of the main apparatus 1 Detects a fault, passes through the power recovery / power failure detection unit 15 -the device control unit 14 -the extension IF control unit 13, and monitors the extension of the extension telephone 2 having the function of connecting to the outside line connected to the normal use extension 5 Unit 24-the device control unit 26 detects a failure, and the voice CH switching unit 211 switches the used line to the detour line 3 to the telephone number of the other party stored in the line connection information memory unit 25 to control the detour line An automatic call is executed from the unit 21.

  Alternatively, a voice message indicating that there is an abnormality stored in the voice information memory unit 27 when the automatic call is executed from the detour line control unit 21 is automatically transmitted.

  On the other hand, when the main device 1 is restored during a call on the bypass line 3, the power recovery / power failure detection unit 15 of the main device 1 detects the recovery, and the power recovery / power failure detection unit 15-device control unit 14-extension The recovery is detected by the extension monitoring unit 24-the device control unit 26 of the extension telephone 2 having the bypass external line connection function via the IF control unit 13, and the recovery is performed on the LCD display unit 28 of the extension telephone 2 having the bypass external line connection function. The extension IF control unit 13 of the main apparatus 1 restored to the other party telephone number stored in the line connection information memory unit 25 by the specific operation of the dial function unit 210-the exchange control unit 12 -An automatic call is made via the external line IF control unit 11.

  FIG. 2 is a flowchart showing the automatic call control by the detour line when a failure occurs according to the present invention. In the extension telephone 2 having the detour outside line connection function, the main line 4 is busy (S201). The line monitoring signal M21 from the apparatus 1 is received by the extension monitoring unit 24 of the extension telephone 2 (S202), the bypass line control unit 21 is activated, and the voice CH switching unit 211 changes the use line from the normal use line 4. Switch to the detour line 3 (S203), call and set the other party telephone number memory from the line connection information memory unit 25, and prepare for calling (S204). At that time, the LCD display unit 28 displays a message that preparation is complete.

  Next, when a predetermined operation of the dial function unit 210 is executed (S205) or a preset time of waiting for automatic call interruption timeout (S206) elapses, the call interruption is selected (S207), and the call interruption is interrupted. Determine presence or absence. At this time, if the call is interrupted, the call is terminated and a transition is made to a standby state (S208).

  Next, when the call is not interrupted, a call is made to the other party on the detour line 3 (S209), and when the other party answers (S210), a communication path is formed on the detour line 3 (S212). . At that time, the presence / absence of message transmission is selected based on the message transmission presence / absence information indicating that the line abnormality has been set in advance in the line connection information memory unit 25 (S213). The line abnormality message is called from the information memory unit 27, and the line abnormality message is transmitted (S214).

  A call is made to the other party on the detour line 3 (S209). If the other party does not respond at this time, the call is terminated and the process proceeds to a standby state (S211). Next, at the end of the call, the call is terminated at the end of the call (S215), and a transition is made to a standby state (S216).

  FIG. 3 is a flowchart showing automatic call control by a normal use line at the time of failure recovery according to the present invention.

  In the extension telephone 2 having a bypass external line connection function, during a call on the bypass line 3 (S301), the extension monitoring unit 24 of the extension telephone 2 detects the activation signal M22 from the main device 1 (S302). The extension control unit 24 is activated, the other party's telephone number information is called from the line connection information memory unit 25, and the call preparation via the extension is made (S303). At this time, the LCD display unit 28 displays that the preparation is complete.

  Next, selection of call interruption (S306) is performed by executing a specific operation of the dial function unit 210 (S304) or automatically calling by waiting for timeout of automatic call interruption (S305), and whether the call is interrupted or not is determined. decide. At this time, when the call is interrupted, the call is continued on the detour line (S307).

  Next, when a call is executed, the detour line monitoring unit 22 detects the end of the detour line (S308), and this causes the detour line control unit 21 to be deactivated (S309), and the voice When the CH switching unit 211 switches the use line from the bypass line 3 to the normal use line 4 and makes a call from the extension control unit 23 on the normal use line 4 (S310), and the other party answers (S311) A communication path is formed on a normal use line. (S313)

  If the other party does not respond at this time, the process is terminated and a transition is made to a standby state (S312). Next, at the end of the call, the call is terminated at the end of the call (S314), and a transition is made to a standby state (S315).

  As a normal use line and a detour line in the present invention, a line such as an IP network, an analog line, or an ISDN line can be used. As the main apparatus, a button telephone apparatus compatible with IP telephone, IP-PBX (local server), or the like can be used.

FIG. 1 is a diagram showing a block configuration of an extension telephone according to the present invention. FIG. 2 is a flowchart showing automatic call control by a detour line when a failure occurs according to the present invention. FIG. 3 is a flowchart showing automatic call control by a normal use line at the time of failure recovery according to the present invention.

Explanation of symbols

1 Main unit 2 Extension telephone with detour outside line connection function 3 Telephone line of carrier (usually used line)
4 Telephone lines of telecommunications carriers (detour lines)
5 Extensions between the main unit and extension telephones that have a detour connection function (extensions used during normal operation)
DESCRIPTION OF SYMBOLS 11 External line IF control part 12 Exchange control part 13 Extension IF control part 14 Device control part 15 Power recovery / power failure detection part 16 Power supply part 21 Bypass line control part 22 Bypass line monitoring part 23 Extension control part 24 Extension monitor part 25 Line Connection information memory section 26 Device control section 27 Voice information memory section 28 LCD display section 29 Call function section 210 Dial function section 211 Voice CH switching section

Claims (2)

An extension telephone connected to the extension of the main unit that accommodates the outside line and the extension line,
The other party telephone number storage means for storing the other party telephone number information or the other party address information during the call,
A detour outside line connection means for connecting to a detour outside line that detours the main device;
An abnormality detecting means for detecting an abnormality or power failure of the extension or the main unit;
Having a recovery detection means for detecting recovery of the extension or the main unit,
When the abnormality detecting means detects an abnormality during a call via the extension, the detour outside line is detected by the other party telephone number information or the other party address information stored in the other party telephone number storage means by the passage of a predetermined time or a specific operation. Automatically call through
When the recovery detection means detects the recovery of the extension or the main unit during a call automatically made via the detour outside line, it makes a call preparation via the extension and displays the completion of the recovery preparation In addition, when the call is interrupted by a specific operation for selecting whether or not the call is interrupted, the call is continued on the detour line, and when the call is executed, the call is stored in the other party telephone number storage means. An extension telephone having a detour outside line connection function, wherein a call is automatically made through a use line switched from the detour outside line to the extension with the other party telephone number information or the other party address information.   2. The extension telephone according to claim 1, wherein the abnormality detecting means detects an abnormality during a call through the extension, and the other party telephone number information or the other party address information stored in the other party telephone number storage means is stored. An extension telephone having a bypass external line connection function, wherein a voice message indicating that an abnormality has occurred is automatically transmitted when an automatic call is made via the bypass external line.

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