JP4215753B2 - COMMUNICATION SYSTEM, ADAPTER DEVICE, AUTOMATIC SYSTEM SETTING METHOD, AND PROGRAM - Google Patents

Description

  The present invention relates to a communication system, an adapter device, an automatic system setting method, and a program according to an automatic system setting method for a VoIP adapter.

  VoIP (Voice over Internet Protocol) is used as a technology for realizing a voice call on an IP network such as the Internet or an intranet. In VoIP, a digitally-encoded voice signal is divided into packets at regular intervals and packetized and transmitted using an IP network with high line usage efficiency, so that the call charge can be reduced. Currently, VoIP is applied to extension telephones using an in-house LAN and Internet telephones.

  In the conventional VoIP adapter, when an existing communication system is changed to a VoIP communication system, the contents of a telephone line contract must be investigated in advance. In general, a public telephone switching network called PSTN (Public Switched Telephony Network) is often used for a telephone line in a communication system compatible with VoIP. In addition, it is necessary to check the system settings of the PBX (Private Branch eXchange) and the telephone line interface of the key telephones connected to the subordinates, and to make the appropriate settings for the VoIP adapters. A knowledgeable worker must respond. Here, the PBX is a device, facility, or switchboard for interconnecting extension telephones within a company or organization and exchanging extension lines and external lines. Moreover, the operator who learned the setting method of the VoIP adapter has to set it. Further, when a plurality of lines are accommodated and the contract contents are different for each line, such as PBX and a key telephone, setting work becomes complicated, the possibility of setting mistakes increases, and time is required.

As a conventional technique, Japanese Patent Application Laid-Open No. 2001-313964 discloses a telephone device and a connection setting method thereof.
In this prior art, a telephone device connected to a circuit station and performing communication includes a protocol processing unit that performs protocol processing with the circuit station, a parameter table that stores parameters necessary for the protocol processing, and the parameters. An automatic setting control unit that detects setting information for setting and stores the setting information in the parameter table is provided.

Japanese Laid-Open Patent Publication No. 9-321867 discloses a telephone exchange.
In this prior art, a telephone line exchange circuit connecting an extension terminal and a subscriber line has a storage means for storing office line connection information, and a office line interface circuit having a loop detection circuit for detecting a DC current loop of the subscriber line. And control means for storing the result of the loop detection in the storage means as the station line connection information.

The telephone device and the connection setting method disclosed in Japanese Patent Laid-Open No. 2001-313964 are inventions that connect to an ISDN line and set up the device by exchanging information with an exchange, and cannot be handled by an analog telephone line.
The telephone exchange disclosed in Japanese Patent Laid-Open No. 9-321867 is intended for an analog telephone line, but it is determined whether or not the telephone line is connected to the apparatus depending on the loop current of the telephone call power supply provided by the telephone office. There is no function to detect the line type or dial type simply by having a means for detecting, and automatic setting of these is impossible.

JP 2001-313964 A JP-A-9-321867

  The connection of a conventional VoIP adapter device already on the market is basically a connection form as shown in FIG. However, in the conventional VoIP adapter device, it is necessary for a builder to input a system setting program. In this case, there are the following problems.

  The first problem is that in order to know the setting state of an existing telephone line, it is necessary to obtain information from the central office. For example, the telephone line connected to the central office exchange is connected to the SIP (Session SIP). Even if there is no problem when changing the connection to the server (Initiation Protocol), if you connect to the SIP server of another carrier, that is, if the telephone line is no longer used, make sure all the setting information Not always available.

  The second problem is that existing PBXs and button telephone devices connected to the telephone line use various company setting programs, and in order to confirm detailed settings, settings for each PBX and button telephone device It is necessary for an operator having specialized knowledge familiar with the program to set up the apparatus.

  The third problem is that when a plurality of telephone lines are accommodated in an existing PBX or button telephone apparatus, it takes time and effort to check the setting contents for each line, and when actually setting a program An input error may occur.

  An object of the present invention is to provide a communication system, an adapter device, an automatic system setting method, and a program according to an automatic system setting method of a VoIP adapter that can be easily shifted to a new communication environment by VoIP communication even for an operator who does not have special knowledge. Is to provide. In this VoIP adapter automatic system setting method, the communication status is monitored by connecting the line monitor unit of the VoIP adapter in parallel to an existing telephone line in advance for an arbitrary period before performing the construction to move to a new communication system using the VoIP adapter. To do. Then, the setting parameters for each line are accumulated in a line connection condition setting table in the memory unit of the system to learn the setting contents of the line, and the subscriber line interface unit is controlled based on this setting data.

  In the following, means for solving the problem will be described using the numbers used in [Best Mode for Carrying Out the Invention] in parentheses. These numbers are added to clarify the correspondence between the description of [Claims] and [Best Mode for Carrying Out the Invention]. However, these numbers should not be used to interpret the technical scope of the invention described in [Claims].

  The communication system according to the present invention includes a telephone device (3) connected to an exchange (1) through a communication line (2), and the communication line (3) in communication between the exchange (1) and the telephone device (3). 2) The control information transmitted above is monitored, setting information for controlling the telephone device (3) is obtained from the control information, the setting information is stored in a setting table, and the telephone device ( 3) an adapter device (5) for converting the audio signal transmitted from the packet into a packet; and the adapter device (5) connected to the adapter device (5) via a network line (6), and the adapter device (5) via the network line (6). ) To the communication server (7) to which the packet is transmitted.

  In the communication system of the present invention, after the adapter device (5) stores the setting information in the setting table, the telephone device (3) replaces the exchange (1) with the communication server (7). Communicate with.

  The adapter device (5) of the present invention includes a control unit (51) that controls the operation of the entire device, a memory unit (52) that stores control data used by the control unit (51), and a communication line (2). Connected and connected to the communication line (2) and transmitted on the communication line (2), a line monitor unit (53) for detecting any of the signals transmitted on the communication line (2) A subscriber line interface unit (54) that receives a voice signal, a conversion unit (55) that converts the voice signal into a packet, and an Ether interface unit (connected to a network line (6) for transmitting the packet) 56).

  The line monitor unit (53) includes a polarity reversal detection unit (531) that monitors the polarity of the direct current of the communication line (2), and a line voltage detection unit that monitors the line voltage of the communication line (2). (532), a call signal detector (533) for detecting the presence or absence of a call signal on the communication line (2), and a PB signal detector for detecting a PB (Push Button) signal on the communication line (2) (534) and a modem signal detector (535) for detecting a modem signal on the communication line (2).

  The memory unit (52) has a setting table. The control unit (51) stores the information obtained via the line monitor unit (53) in the setting table.

  When polarity reversal is detected by the polarity reversal detection unit (531), the control unit (51) determines that the communication line (2) has transitioned to an incoming state, and the call signal detection unit (533). The type of the call signal is monitored at.

  When the call signal is an IR signal (normal call signal), the control unit (51) monitors the PB signal with the PB signal detection unit (534). When the PB signal is detected, the control unit (51) stores information indicating “dial-in” in the incoming call type item of the setting table and indicates “PB” in the dial-in method item. Store information. When the PB signal is not detected, the control unit (51) stores information indicating “general incoming call” in the item of the incoming call type.

  When the calling signal is a CAR signal (activation signal), the control unit (51) monitors the modem signal at the modem signal detection unit (535). When the modem signal includes the called number information, the control unit (51) stores information indicating “dial-in” in the incoming call type item of the setting table, and the dial-in method item. Information indicating “MODEM” is stored, and information indicating “present” is stored in the item of the number display. When the called party number information is not included in the modem signal, the control unit (51) stores information indicating “none” in the item of the number display.

  When polarity inversion is not detected by the polarity inversion detection unit (531), the control unit (51) monitors the line voltage of the communication line (2) by the line voltage detection unit (532). To do.

  When the line voltage becomes less than a predetermined value, the control unit (51) determines that the communication line (2) has shifted to a transmission state, and the line voltage detection unit (532) determines the communication line. The line voltage in (2) is monitored, and when there is a change in the line voltage, the dial speed is detected.

  If the line voltage is equal to or higher than a predetermined value, the control unit (51) returns to monitoring the polarity of the direct current of the communication line (2).

  When the dial speed is a predetermined speed, the control unit (51) stores information indicating “DP” in the outgoing dial type item of the setting table, and sets the predetermined speed in the dial speed item. Information to be stored is stored.

  When the change in the line voltage cannot be detected by the line voltage detection unit (532), the control unit (51) receives the PB signal by the PB signal detection unit (534), and the setting table The information indicating “PB” is stored in the item of the outgoing dial type.

  The adapter device (5) of the present invention is provided between the line monitor unit (53) and the subscriber line interface unit (54), and the communication line (2) monitored by the line monitor unit (53). A changeover switch section (57) for switching is further provided.

  The automatic system setting method of the present invention (a) monitors control information transmitted on a communication line (2) during communication between an exchange (1) and a telephone device (3), and uses the control information to Obtaining setting information for controlling the device (3) and storing the setting information in a setting table; (b) converting a voice signal transmitted from the telephone device (3) into a packet; (C) transmitting the packet to the communication server (7) via the network line (6).

  The step (c) includes the step (c1) of storing the setting information in the setting table and then the telephone device (3) communicating with the communication server (7) instead of the exchange (1). Is further provided.

  The step (a) includes (a1) monitoring the polarity of the direct current of the communication line (2), (a2) monitoring the line voltage of the communication line (2), and (a3) Detecting the presence or absence of a paging signal on the communication line (2); (a4) detecting a PB (Push Button) signal on the communication line (2); and (a5) on the communication line (2). Further detecting a modem signal.

  The step (a3) further includes a step (a31) of determining that the communication line (2) has transitioned to an incoming state when polarity reversal is detected, and monitoring the type of the call signal.

  The step (a4) includes: (a41) a step of monitoring the PB signal when the call signal is an IR signal (normal call signal); and (a42) the setting when the PB signal is detected. Storing information indicating “dial-in” in the incoming call type item of the table and storing information indicating “PB” in the dial-in method item; and (a43) when the PB signal is not detected, Storing information indicating “general incoming call” in the incoming call type item.

  The step (a5) includes: (a51) a step of monitoring the modem signal when the call signal is a CAR signal (activation signal); and (a52) the called number information is included in the modem signal. In this case, information indicating “dial-in” is stored in the incoming call type item of the setting table, information indicating “MODEM” is stored in the dial-in method item, and “present” is displayed in the number display item. And (a53) when the modem signal does not contain called number information, the step of storing information indicating “None” in the item of the number display is further provided.

  The step (a2) further includes a step (a21) of monitoring the line voltage of the communication line (2) when polarity inversion is not detected.

  In the step (a2), (a22) when the line voltage becomes less than a predetermined value, it is determined that the communication line (2) has shifted to a transmission state, and the line voltage of the communication line (2) is monitored. The method further includes the step of: The step (a) further includes a step (a6) of detecting a dial speed when there is a change in the line voltage.

  The step (a1) further includes the step of (a11) returning to monitoring of the polarity of the direct current of the communication line (2) if the line voltage is equal to or higher than a predetermined value.

  In the step (a), (a7) when the dial speed is a predetermined speed, information indicating “DP” is stored in the item of outgoing dial type of the setting table, and the predetermined speed is stored in the item of dial speed. The method further includes storing information indicating the speed.

  The step (a4) further includes a step (a44) of receiving the PB signal when the change in the line voltage cannot be detected and storing information indicating “PB” in the item of the outgoing dial type of the setting table. It has.

  The step (a) includes (a8) the communication line (2) provided between the line monitor unit (53) and the subscriber line interface unit (54) and monitored by the line monitor unit (53). The step of switching is further provided.

  The program of the present invention is a program for causing a computer to execute the automatic system setting method described above.

The first effect is that the line status can be detected by various detection circuits in the line monitor unit, so that the setting state of the existing telephone line can be automatically grasped.
The second effect is that the setting state of the existing telephone line detected by the line monitor unit can be directly reflected in the line connection condition setting table in the memory unit via the control unit.
The third effect is that, since the control unit can control the subscriber line interface unit based on the setting data stored in the memory unit, the work of conventionally inputting the setting data by an operator having specialized knowledge is unnecessary. Thus, the existing communication environment can be shifted to a communication environment using VoIP simply by connecting the subscriber line interface unit to the PBX and the button telephone device.

Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a case where a VoIP (Voice over Internet Protocol) adapter, which is a product of the present invention, is connected to an existing communication facility.
At this time, the communication system of FIG. 1 has a central office / private branch exchange 1, a telephone line 2, a PBX (Private Branch eXchange) / button telephone apparatus 3, an extension telephone 4, and a VoIP adapter 5.

  In this communication system, a central office / private branch exchange 1 and a PBX / button telephone apparatus 3 are connected by a telephone line 2, and an extension telephone 4 (4-i, i = 1 to n: n is the number of telephones) is a PBX / button. The VoIP adapter 5 according to the present invention is connected in parallel to the existing communication system accommodated in the telephone device 3. The VoIP adapter 5 monitors control information exchanged on the telephone line 2 by the existing communication system, obtains information necessary for controlling the PBX / button telephone apparatus 3, and learns various setting items. The telephone line 2 may be wired or wireless. Further, the PBX and the key telephone function as a relay device that relays communication between the extension telephone 4 and the telephone office / private branch exchange 1. The extension telephone 4 is a terminal capable of transmitting a voice signal.

FIG. 2 is a diagram after the transition to the new communication system.
The new communication system of FIG. 2 includes a telephone line 2, a PBX / button telephone apparatus 3, an extension telephone 4, a VoIP adapter 5, a WAN 6, and a SIP server 7.

  The telephone line 2 connected to the telephone office / private branch exchange 1 in the existing communication system is disconnected, and the PBX / button telephone apparatus 3 is connected to the VoIP adapter 5 via the telephone line 2. Disconnecting the telephone line 2 means disconnecting the telephone line 2. For example, the communication on the telephone line 2 may be blocked or the telephone line 2 may be disconnected. Further, it is only necessary to prevent communication between the telephone office / private branch exchange 1 and the PBX / button telephone apparatus 3 without actually disconnecting the telephone line 2. The voice signal sent from the extension telephone 4 is converted to VoIP by the VoIP adapter 5 and sent to the SIP server 7 via the WAN (Wide Area Communication Network) 6. Here, VoIP conversion refers to converting a voice signal into a signal corresponding to VoIP. The WAN 6 is a network line used for digital communication. The WAN 6 may be a local area network (LAN). In this way, in the present invention, the VoIP adapter is connected in parallel with the existing communication system to monitor the communication status, and the setting information of the interface unit of the PBX and the key telephone is learned before operation, which is troublesome. The interface setting can be automated. Note that the WAN 6 may be either wired or wireless.

The VoIP adapter of the present invention will be described with reference to FIG.
Referring to FIG. 3, a VoIP adapter 5 as an embodiment of the present invention is shown. Hereinafter, the function of each block in the figure will be described.
The VoIP adapter 5 of the present invention includes a control unit 51, a memory unit 52, a line monitor unit 53, a subscriber line interface unit 54, a VoIP conversion unit 55, and an Ether interface unit 56.

  The control unit 51 is a part that controls the entire VoIP adapter 5, and is connected to a memory unit 52, a line monitor unit 53, a subscriber line interface unit 54, a VoIP conversion unit 55, and an Ether interface unit 56. The telephone line 2 is connected to a line monitor unit 53 and a subscriber line interface unit 54. First, in order to know the state of the telephone line 2, connection is made as shown in FIG. The control unit 51 is obtained by monitoring the state of the telephone line 2 with each detection unit in the line monitor unit 53 and detecting changes in line voltage and signal in each state of outgoing call, incoming call, and idle (standby). The setting information is stored in the memory unit 52. The “line connection condition setting table” shown in FIG. 4 is provided in the memory unit 52, and the control unit 51 stores the information obtained via the line monitor unit 53 in each item in this table. To do. When the connection is changed as shown in FIG. 2 and the PBX / button telephone apparatus 3 is connected under the VoIP adapter 5, that is, when the new communication system of FIG. 2 is disconnected from the telephone office / private branch exchange 1, the control unit 51 The subscriber line interface unit 54 is controlled based on the setting information stored in the memory unit 52. At this time, the subordinate PBX / button telephone apparatus 3 can be changed to a method of communicating with the SIP server 7 via the WAN 6 by converting the voice signal to VoIP without performing any special setting change.

The function of each part will be described below.
The VoIP adapter 5 indicates the entire VoIP adapter to which the present invention is applied.
The controller 51 controls the operation of the entire VoIP adapter.
The memory unit 52 stores various control data in the VoIP adapter.
The line monitor unit 53 is connected to the telephone line 2 and includes detection units such as a polarity inversion detection unit 531, a line voltage detection unit 532, a call signal detection unit 533, a PB signal detection unit 534, and a modem signal detection unit 535.

  The polarity inversion detection unit 531 monitors the polarity of the DC voltage of the telephone line 2. Then, it is detected that the telephone line 2 is in an incoming state due to polarity reversal. The polarity information is sent to the control unit 51. The line voltage detector 532 monitors the line voltage of the telephone line 2. Here, the idle state, the transmission state, and the dial pulse are detected using the line voltage 20V as a threshold value. The call signal detection unit 533 detects the presence or absence of a call signal (Ring signal) on the telephone line 2. The PB signal detection unit 534 detects a PB signal (Push Button signal) on the telephone line 2. The PB signal is also referred to as a DTMF (Dial Toe Multi Frequency) signal. As a PB signal, a selection signal is often transmitted by combining two sound frequencies determined for each button. The modem signal detection unit 535 detects a modem signal sent from the telephone office / private branch exchange 1.

  The subscriber line interface unit 54 is a circuit unit that is connected to the telephone line 2 and performs communication with the PBX / button telephone apparatus 3 connected to the subordinate. The VoIP conversion unit 55 converts the voice signal input from the subscriber line interface unit 54 into VoIP, and conversely converts the VoIP signal from the WAN 6 into a voice signal. The Ether interface unit 56 is an interface unit that communicates a VoIP (packetized) signal with the SIP server 7 via the WAN 6. The telephone line 2 shows the wiring between the central office / private branch exchange 1 and the PBX / button telephone apparatus 3 in FIG. 1, and the wiring between the VoIP adapter 5 and the PBX / button telephone apparatus 3 in FIG. Control related to voice communication and outgoing / incoming calls. The WAN 6 indicates a network line that connects the VoIP adapter 5 and the SIP server 7.

Next, the internal operation of the VoIP adapter of FIG. 3 will be described using the time charts shown in FIGS.
The VoIP adapter is connected in parallel with the existing line as shown in FIG.
The “transmission operation / incoming operation detection sequence” in FIG. 5 is a sequence for detecting whether the state of the telephone line is the idle state, the outgoing state, or the incoming state.
The state of the telephone line 2 connected to the VoIP adapter 5 is monitored by each circuit unit of the line monitor unit 53. In the “transmission operation / incoming operation detection sequence (FIG. 5)”, the polarity inversion detection unit 531 A line voltage detector 532 is used.

(1) Step S101
When the automatic setting start sequence is activated, the control unit 51 monitors whether or not the line voltage polarity of the telephone line 2 changes via the polarity inversion detection unit 531.
(2) Step S102
The control unit 51 detects polarity inversion via the polarity inversion detection unit 531. That is, the presence / absence of polarity inversion is determined.
(3) Step S103
When polarity reversal is detected by the polarity reversal detection unit 531, the control unit 51 determines that the telephone line 2 has transitioned to the incoming state, and proceeds to the “incoming operation monitoring start” sequence (FIG. 6).
(4) Step S104
When polarity reversal is not detected by the polarity reversal detection unit 531, the line voltage detection unit 532 monitors the line voltage change of the telephone line.
(5) Step S105
The control unit 51 detects the line voltage via the line voltage detection unit 532 and determines whether or not the line voltage is less than 20V. When the line voltage is 20 V or more, the process returns to the polarity inversion detection (step S101) of the telephone line 2.
(6) Step S106
When the line voltage becomes less than 20V, it is determined that the telephone line 2 has transitioned to the transmission state, and the process proceeds to the “transmission operation monitor start” sequence (FIG. 7).

  In this way, the polarity reversal detection unit 531 and the line voltage detection unit 532 in the line monitor unit 53 are used to determine whether the telephone line 2 is in the outgoing, incoming, or idle state.

The “incoming operation monitoring sequence” in FIG. 6 is an operation monitoring sequence when the telephone line 2 is in an incoming state.
In FIG. 6, the call signal detection unit 533, the PB signal detection unit 534, and the modem signal detection unit 535 in the line monitor unit 53 are used.

(1) Step S201
When the incoming operation monitoring sequence (FIG. 6) is started, the control unit 51 first monitors the type of the ringing signal (Ring signal) by the ringing signal detection unit 533.
(2) Step S202
The control unit 51 determines the type of the call signal (Ring signal) via the call signal detection unit 533.
(3) Step S203
When the call signal detected by the call signal detection unit 533 is an IR signal (Interrupted Ringing), the next PB signal detection unit 534 monitors the PB signal. The IR signal is often used as a general (normal) ringing signal.
(4) Step S204
The control unit 51 detects the PB signal via the PB signal detection unit 534.
(5) Step S205
When the PB signal is detected by the PB signal detection unit 534, the control unit 51 enters the “line connection condition setting table (FIG. 4)” in the memory unit 52 into “incoming call type: dial-in”, “dial-in method”. : PB ".
(6) Step S206
When the PB signal is not detected by the PB signal detection unit 534, “incoming call type: general incoming call” is stored.
(7) Step S207
In step S202, when the call signal detected by the call signal detection unit 533 is a CAR signal (activation signal), the modem signal detection unit 535 monitors the modem signal.
(8) Step S208
The control unit 51 detects “called number information” in the modem signal modem signal via the modem signal detection unit 535. If the “numbered number information” is not included in the modem signal, the operation proceeds to step S210.
(9) Step S209
If the modem signal includes “incoming number information”, the control unit 51 enters the “line connection condition setting table (FIG. 4)” in the memory unit 52 into “incoming call type: dial-in”, “dial-in”. “Method: MODEM”.
(10) Step S210
Subsequently, the control unit 51 detects “calling number information” via the modem signal detection unit 535.
(11) Step S211
When the “calling number information” is included, the control unit 51 stores “number display: present” in the “line connection condition setting table (FIG. 4)” in the memory unit 52.
(12) Step S212
When the “calling number information” is not included, the control unit 51 stores “number display: none” in the “line connection condition setting table (FIG. 4)” in the memory unit 52.

The “transmission operation monitoring sequence” in FIG. 7 is an operation monitoring sequence when the telephone line 2 is in a transmission state.
In FIG. 7, the line voltage detection unit 532 and the PB signal detection unit 534 in the line monitor unit 53 are used.

(1) Step S301
When the “transmission operation monitoring sequence (FIG. 7)” is started, the control unit 51 first monitors the line voltage of the telephone line 2 by the line voltage detection unit 532.
(2) Step S302
The control unit 51 detects a change in the line voltage via the line voltage detection unit 532.
(3) Step S303
When there is a change in the line voltage, the line voltage detection unit 532 determines that the PBX or the key telephone has transmitted a DP (Dial Pulse) signal, and shifts to the DP signal detection state.
(4) Step S304
After shifting to the DP signal detection state by the line voltage detection unit 532, the control unit 51 detects the dial speed by the PB signal detection unit 534. Since this dial speed is generally detected by sampling a signal applied to the control unit without using a dedicated detection circuit, the details are omitted here.
(5) Step S305
When the detected dial speed is 10 pps, the control unit 51 stores “outgoing dial type: DP” and “dial speed: 10 pps” in the “line connection condition setting table (FIG. 4)” in the memory unit 52. .
(6) Step S306
When the detected dial speed is 20 pps, the control unit 51 stores “outgoing dial type: DP” and “dial speed: 20 pps” in the “line connection condition setting table (FIG. 4)” in the memory unit 52. .
(7) Step S307
When the voltage change of the telephone line 2 cannot be detected by the line voltage detector 532, the PB signal is received by the PB signal detector 534.
(8) Step S308
After the PB signal is detected by the PB signal detection unit 534, the control unit 51 stores the result in the “line connection condition setting table (FIG. 4)” in the memory unit 52 as “outgoing dial type: PB”. Remember.

  Based on the above flowchart and the detection result of each circuit, the setting condition of the telephone line 2 to be monitored is stored in the “line connection condition setting table” provided in the memory unit 52, and the VoIP adapter is based on this setting information. 5 can control the subscriber line interface unit 54. Therefore, even when the connection is made as shown in FIG. 2, the PBX / button telephone apparatus 3 connected to the subordinate without any special setting is provided. Communication can be performed.

As the second embodiment of the present invention, the basic configuration of the VoIP adapter is as described above, but the connection between the line monitor unit and the subscriber line interface unit is further devised.
The configuration of the VoIP adapter is shown in FIG.
The VoIP adapter 5 of this figure includes a control unit 51, a memory unit 52, a line monitor unit 53, a subscriber line interface unit 54, a VoIP conversion unit 55, an Ether interface unit 56, and a changeover switch unit 57.

  The control unit 51 controls the entire VoIP adapter 5, and includes a memory unit 52, a line monitor unit 53, a subscriber line interface unit 54 (54-i, i = 1 to n: n is the number of telephone lines), VoIP A conversion unit 55 and an Ether interface unit 56 are connected. A telephone line 2 (2-i, i = 1 to n: n is the number of telephone lines) is connected to a line monitor unit 53 and a subscriber line interface unit 54. Here, the subscriber line interface unit 54 and the telephone line 2 are connected on a one-to-one basis. However, the present invention is not limited to a case where one-to-one connection is actually made. For example, a plurality of telephone lines 2 may be connected to one subscriber line interface unit 54. In this case, a plurality of connection ports with the telephone line 2 exist in one subscriber line interface unit 54. A changeover switch unit 57 is provided between the line monitor unit 53 and the subscriber line interface unit 54. By switching the changeover switch unit 57, the line monitor unit 53 causes at least one of the telephone lines 2 (2-i, i = 1 to n: n is the number of telephone lines) connected to the subscriber line interface unit 54. Connected with books. At this time, the changeover switch unit 57 may make it possible to make the line monitor unit 53 not connected to the telephone line 2 (the changeover switch unit 57 is OFF).

  At this time, as shown in FIG. 9, the VoIP adapter 5 and the PBX / button telephone apparatus 3 are connected by a plurality of telephone lines 2. In general, PBX and button telephone devices generally used in offices are often connected by a plurality of telephone lines such as 10 lines or 20 lines. In order to make all these lines communicate via the SIP server, the VoIP adapter has n interfaces for connecting n telephone lines.

  First, in order to know the state of the telephone line 2, connection is made as shown in FIG. The control unit 51 is obtained by monitoring the state of the telephone line 2 with each detection unit in the line monitor unit 53 and detecting changes in line voltage and signal in each state of outgoing call, incoming call, and idle (standby). The setting information is stored in the memory unit 52. The “line connection condition setting table” shown in FIG. 4 is provided in the memory unit 52, and the control unit 51 stores the information obtained via the line monitor unit 53 in each item in this table. To do. When the connection is changed as shown in FIG. 2 and the PBX / button telephone apparatus 3 is connected under the VoIP adapter 5, that is, when the new communication system of FIG. 2 is disconnected from the telephone office / private branch exchange 1, the control unit 51 The subscriber line interface unit 54 is controlled based on the setting information stored in the memory unit 52. At this time, the subordinate PBX / button telephone apparatus 3 can be changed to a method of communicating with the SIP server 7 via the WAN 6 by converting the voice signal to VoIP without performing any special setting change.

  In FIG. 8, a plurality of line monitor units 53 are provided by switching the telephone line 2 monitored by the line monitor unit 53 by providing a changeover switch unit 57 between the line monitor unit 53 and the subscriber line interface unit 54. By sharing them without any problem, the effect of simplifying the apparatus can be obtained.

Heretofore, switching from the method in which the PBX / button telephone apparatus 3 communicates with the central office / private branch exchange 1 to the system in which the PBX / button telephone apparatus 3 communicates with the SIP server 7 has been described. Can be used simultaneously.
However, since a single telephone line cannot be used simultaneously, if the PBX / button telephone apparatus 3 has only one telephone line 2 for connecting to the central office / private branch exchange 1 or the VoIP adapter 5, Either communication method will be used. The reason is that, for example, in the case of connection as shown in FIG. 10, there are two connection destinations on one line when calling from the PBX / button telephone apparatus 3. In addition, the possibility of a failure is increased. However, when different lines are connected as shown in FIG. 11, a system in which the PBX / button telephone apparatus 3 communicates with the central office / private branch exchange 1 and a system in which the PBX / button telephone apparatus 3 communicates with the SIP server 7. Can be used simultaneously.

As described above, in the present invention, an existing communication system that is connected to a telephone exchange and communicates a voice call with an analog signal is communicated with a SIP server via a WAN by converting the voice signal into VoIP. An adapter device (VoIP adapter) that can be changed is used.
In the present invention, when an existing communication system connected to a telephone line is replaced with a new communication system using a VoIP adapter, the existing communication system is connected to the telephone line in parallel with the existing communication system. The communication procedure and line status are monitored to learn the line connection conditions and setting status, and the VoIP adapter setting program is automatically set according to the obtained information to simplify the transition to the new communication system. .

FIG. 1 is a diagram in which a VoIP adapter according to the present invention is connected to an existing communication facility. FIG. 2 is a connection diagram after the existing communication equipment is transferred to a new communication system. FIG. 3 is a configuration diagram of the VoIP adapter according to the first embodiment of this invention. FIG. 4 is a line connection condition setting table. FIG. 5 is a flowchart showing a sequence for detecting an outgoing call operation and an incoming call operation. FIG. 6 is an incoming operation monitoring sequence flowchart. FIG. 7 is a transmission operation monitor sequence flowchart. FIG. 8 is a configuration diagram of the VoIP adapter according to the second embodiment of this invention. FIG. 9 is a connection diagram of a communication system according to the second embodiment of this invention. FIG. 10 is a connection diagram of the communication system when there is one telephone line (communication system switching). FIG. 11 is a connection diagram of a communication system when there are a plurality of telephone lines (combined communication methods).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Telephone office / private branch exchange 2 (-i, i = 1-n) ... Telephone line 3 ... PBX / button telephone apparatus 4 (-i, i = 1-n) ... Extension telephone 5 ... VoIP adapter 6 ... WAN ( Wide area communication network)
DESCRIPTION OF SYMBOLS 7 ... SIP server 51 ... Control part 52 ... Memory part 53 ... Line monitor part 54 (-i, i = 1-n) ... Subscriber line interface part 55 ... VoIP conversion part 56 ... Ether interface part 57 ... Changeover switch part 531 ... polarity inversion detection unit 532 ... line voltage detection unit 533 ... call signal detection unit 534 ... PB signal detection unit 535 ... modem signal detection unit

Claims (27)

A telephone device connected to the exchange through a communication line;
Control information transmitted on the communication line during communication between the exchange and the telephone device is monitored, setting information for controlling the telephone device is obtained from the control information, and the setting information is set in the setting table. And an adapter device for converting a voice signal transmitted from the telephone device into a packet;
A communication system including a communication server connected to the adapter device via a network line and transmitting the packet from the adapter device via the network line. The communication system according to claim 1,
After the adapter device stores the setting information in the setting table, the telephone device communicates with the communication server instead of the exchange. A control unit for controlling the operation of the entire apparatus;
A memory unit for storing control data used by the control unit;
A line monitor that is connected to a communication line and detects any of the signals transmitted on the communication line;
A subscriber line interface unit connected to the communication line and receiving a voice signal transmitted on the communication line;
A converter for converting the audio signal into a packet;
And an Ether interface unit connected to a network line for transmitting the packet. The adapter device according to claim 3, wherein
The line monitor unit
A polarity reversal detector for monitoring the polarity of the direct current of the communication line;
A line voltage detector for monitoring a line voltage of the communication line;
A call signal detector for detecting the presence or absence of a call signal on the communication line;
A PB signal detector for detecting a PB (Push Button) signal on the communication line;
An adapter device comprising: a modem signal detection unit for detecting a modem signal on the communication line. The adapter device according to claim 4,
The memory unit is
Has a settings table,
The control unit stores information obtained via the line monitor unit in the setting table. Adapter device. The adapter device according to claim 5, wherein
When polarity inversion is detected by the polarity inversion detection unit, the control unit determines that the communication line has transitioned to an incoming state, and monitors the type of the call signal by the call signal detection unit. . The adapter device according to claim 6,
When the call signal is an IR signal (normal call signal), the control unit monitors the PB signal in the PB signal detection unit,
When the PB signal is detected, the control unit stores information indicating “dial-in” in the incoming call type item of the setting table, and stores information indicating “PB” in the dial-in method item. And
When the PB signal is not detected, the control unit stores information indicating “general incoming call” in the incoming call type item. The adapter device according to claim 6,
When the calling signal is a CAR signal (activation signal), the control unit monitors the modem signal in the modem signal detection unit,
When the modem signal includes called number information, the control unit stores information indicating “dial-in” in the incoming call type item of the setting table, and stores “MODEM” in the dial-in method item. ”And information indicating“ Yes ”in the number display item,
If the modem signal does not include the called number information, the control unit stores information indicating “none” in the item of the number display. The adapter device according to claim 5, wherein
When polarity inversion is not detected by the polarity inversion detection unit, the control unit monitors the line voltage of the communication line at the line voltage detection unit. The adapter device according to claim 9, wherein
When the line voltage becomes less than a predetermined value, the control unit determines that the communication line has transitioned to a transmission state, and monitors the line voltage of the communication line in the line voltage detection unit, An adapter device that detects dial speed when there is a change in line voltage. The adapter device according to claim 9, wherein
If the line voltage is equal to or greater than a predetermined value, the control unit returns to monitoring the polarity of the direct current of the communication line. The adapter device according to claim 10,
When the dial speed is a predetermined speed, the control unit stores information indicating “DP” in the item of outgoing dial type of the setting table, and information indicating the predetermined speed in the item of dial speed. Adapter device to memorize. The adapter device according to claim 10,
When the change in the line voltage cannot be detected by the line voltage detection unit, the control unit receives the PB signal at the PB signal detection unit, and sets the “PB” to the item of the outgoing dial type in the setting table. An adapter device that stores information indicating "." The adapter device according to claim 3, wherein
An adapter device further comprising a changeover switch unit provided between the line monitor unit and the subscriber line interface unit for switching the communication line monitored by the line monitor unit. (A) monitoring control information transmitted on a communication line during communication between the exchange and the telephone device, obtaining setting information for controlling the telephone device from the control information, and setting the setting information in a setting table; The step of storing in
(B) converting the voice signal transmitted from the telephone device into a packet;
(C) An automatic system setting method comprising: transmitting the packet to a communication server via a network line. The automatic system setting method according to claim 15,
The step (c) includes:
(C1) The automatic system setting method further comprising the step of, after storing the setting information in the setting table, the telephone device communicates with the communication server instead of the exchange. The automatic system setting method according to claim 16,
The step (a) includes:
(A1) monitoring the polarity of the direct current of the communication line;
(A2) monitoring the line voltage of the communication line;
(A3) detecting the presence or absence of a paging signal on the communication line;
(A4) detecting a PB (Push Button) signal on the communication line;
(A5) An automatic system setting method further comprising a step of detecting a modem signal on the communication line. The automatic system setting method according to claim 17,
The step (a3)
(A31) An automatic system setting method further comprising the step of determining that the communication line has transitioned to an incoming state when polarity reversal is detected, and monitoring the type of the call signal. The automatic system setting method according to claim 18,
The step (a4)
(A41) if the call signal is an IR signal (normal call signal), monitoring the PB signal;
(A42) When the PB signal is detected, storing information indicating “dial-in” in the incoming call type item of the setting table and storing information indicating “PB” in the dial-in method item When,
(A43) An automatic system setting method further comprising the step of storing information indicating “general incoming call” in the incoming call type item when the PB signal is not detected. The automatic system setting method according to claim 18,
The step (a5) includes:
(A51) if the call signal is a CAR signal (activation signal), monitoring the modem signal;
(A52) When the called party number information is included in the modem signal, information indicating “dial-in” is stored in the incoming call type item of the setting table, and “MODEM” is set in the dial-in method item. Storing information indicating, and storing information indicating “present” in the item of the number display;
(A53) An automatic system setting method, further comprising the step of storing information indicating “None” in the item of the number display when the called number information is not included in the modem signal. The automatic system setting method according to claim 17,
The step (a2) includes:
(A21) The automatic system setting method further comprising the step of monitoring the line voltage of the communication line when polarity inversion is not detected. The automatic system setting method according to claim 21,
The step (a2) includes:
(A22) When the line voltage becomes less than a predetermined value, it is further determined that the communication line has transitioned to a transmission state, and the line voltage of the communication line is monitored;
The step (a) includes:
(A6) An automatic system setting method further comprising a step of detecting a dial speed when there is a change in the line voltage. The automatic system setting method according to claim 21,
The step (a1) includes:
(A11) The automatic system setting method further comprising the step of returning to monitoring of the polarity of the direct current of the communication line if the line voltage is equal to or greater than a predetermined value. The automatic system setting method according to claim 22,
The step (a) includes:
(A7) When the dial speed is a predetermined speed, information indicating “DP” is stored in the item of outgoing dial type of the setting table, and information indicating the predetermined speed is stored in the item of dial speed. An automatic system setting method further comprising a step. The automatic system setting method according to claim 10,
The step (a4)
(A44) An automatic system setting method further comprising a step of receiving the PB signal when the change in the line voltage cannot be detected and storing information indicating “PB” in the item of the outgoing dial type of the setting table. The automatic system setting method according to claim 15,
The step (a) includes:
(A8) An automatic system setting method further comprising a step of switching the communication line that is provided between the line monitor unit and the subscriber line interface unit and monitored by the line monitor unit.   A program for causing a computer to execute the automatic system setting method according to any one of claims 15 to 26.

Images