JP2009231893A - Common gateway device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein a call cannot be performed in an IP phone system when the call is originated to a telephone number with origination limitation, if a contract of subscriber line (analog or ISDN subscriber line) without origination limitation is not made simultaneously. <P>SOLUTION: A communication system 1000 includes a common gateway 100, n sets of terminals 200, n sets of ONUs 800 associated with the terminals 200 one to one, a PSTN station 500, and Internet 400 connected to the ONUs 800. When each of the terminals 200 originates a call to a telephone number with origination limitation by an IP telephone, the common gateway 100 communicates with the PSTN station 500. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a common gateway device shared by a plurality of service users.

  In an IP telephone system provided by an Internet service provider, when a call is made to a phone number with a call restriction (for example, a 0ABJ number, such as a telephone number starting with “0120” or “0570”), there is no call restriction. If a subscriber line (analog or ISDN subscriber line) is not contracted at the same time, a call cannot be made. In addition, optical telephones provided by major carriers also have restrictions on telephone numbers, so calls cannot be made using IP telephones alone unless analog or ISDN subscriber lines are contracted.

  On the other hand, Patent Document 1 discloses an IP telephone gateway device that associates each of a plurality of external telephone numbers with an incoming IP telephone.

JP 2005-244490 A

  An object of the present invention is to eliminate transmission restrictions without changing the contract of an IP line when a plurality of users use an IP line that cannot transmit a specific number. In addition, since it is sufficient to have a function according to the number of PSTN lines, there is no need to install a useless function and an inexpensive apparatus is provided.

  The above-described problems include an individual IP extension individually connected to a plurality of VoIP terminals, an individual IP extension corresponding to the individual IP extension one-to-one, and a shared non-IP external line shared by the plurality of VoIP terminals. A call detection means for detecting a call from an individual IP extension and a destination telephone number, an internal / external line connection means for connecting the individual IP extension to either an individual IP external line or a shared non-IP external line, and a specific telephone number are registered. Specific number registration means, specific number determination means for determining whether the destination telephone number detected by the call detection means is a telephone number registered in the specific number registration means, and termination of the VoIP communication protocol of the individual IP extension VoIP communication terminator, and data conversion for converting the data from the individual IP extension to the format of the shared non-IP external line and converting the data from the shared non-IP external line to the format of the individual IP extension The internal / external line connecting means, when the call detecting means does not detect a call from the individual IP extension, sets the individual IP extension to be connected to the individual IP external line corresponding to the individual IP extension. When the call detection means detects a call from the individual IP extension, and the specific number determination means determines that the call destination telephone number is not a telephone number registered in the specific number registration means, the internal / external line connection means Continues the state where the individual IP extension is connected to the individual IP extension corresponding to the individual IP extension, the call detection means detects the call from the individual IP extension, and the specific number determination means is the destination telephone of the call When it is determined that the number is a telephone number registered in the specific number registration means, the internal / external line connecting means connects the individual IP extension to the shared non-IP external line, and the VoIP communication terminating means is connected to the V from the individual IP extension. Terminating the IP communication protocol, the data conversion means by a common gateway device for converting the data mutually between the common non-IP outside line and individual IP extension, can be achieved.

  According to the present invention, even a telephone number that can be used without changing a contract with a provider and cannot be called by an IP telephone can be communicated via the PSTN network and is not limited by the telephone number. Provide a common gateway that can communicate.

  In addition, since it is sufficient to have a function according to the number of PSTN lines, it is not necessary to install a useless function, and an inexpensive common gateway can be provided.

  Embodiments of the present invention will be described below with reference to the drawings using examples. Note that the same reference numerals are assigned to substantially the same parts, and the description will not be repeated.

  First, a schematic configuration of a communication system using a common gateway will be described with reference to FIG. Here, FIG. 1 is a hardware block diagram of the communication system. In FIG. 1, a communication system 1000 includes a common gateway 100, n terminals 200 connected to the common gateway 100, and n ONUs (Opticals) corresponding to the terminals 200 connected to the common gateway 100 on a one-to-one basis. Network Unit) 800, a PSTN station 500 connected to the common gateway 100, and the Internet 400 connected to the ONU 800. The ONU 800 and the Internet are connected by an external line 600. The ONU 800 and the common gateway 100 are connected by an ONU connection line 900. Further, the PSTN station 500 and the common gateway 100 are connected by a PSTN subscriber line 700. Further, the common gateway 100 and the terminal 200 are connected by an extension line 300.

  The extension 300 accommodated in the common gateway 100 is connected to the terminal 200 and uses the respective IP addresses. The common gateway 100 accommodates a PSTN subscriber line 700 that is an analog line, and communicates with the PSTN station 500 through the PSTN subscriber line 700.

  In the common gateway 100, the extension 300 and the external line 600 have a one-to-one correspondence, so that the user of the terminal 200 can connect the terminal device without individually changing the contract of the Internet provider.

  When the common gateway 100 makes a call from the terminal 200, a phone number that is restricted when using an IP phone (a phone number beginning with “0120”, “0570”, etc., which is a 0ABJ number) is used. Monitor and switch to PSTN communication for communication. With this operation, even a telephone number that is restricted by an IP phone can be communicated without being restricted.

  The ONU 800 may be a user network interface (UNI) that is a lead-in line in the home of the ONU that is an optical subscriber line terminating device. The PSTN subscriber line 700 connected to the common gateway 100 may be an ISDN line, a PHS, a mobile phone, or the like. The ONU connection line 900 can be regarded as an external line as viewed from the common gateway.

  The configuration of the common gateway will be described with reference to FIG. Here, FIG. 2 is a functional block diagram of the common gateway. In FIG. 2, the common gateway 100 includes an outside line processing unit 101, a packet route control unit 102, an extension processing unit 103, a call control information detection unit 104, a SIP processing unit 105, a protocol conversion unit 106, a communication control unit 107, and a PSTN processing unit. 108, a communication history storage unit 109, and a specific number conversion unit 110. An extension 300 is connected to the extension processing unit 103, and an ONU connection line 900 is connected to the outside processing unit 101.

  Communication data from the extension 300 is accommodated in the extension processing unit 103, and the packet path unit 102 sends the data to the outside line processing unit 101, the SIP processing 105, or performs processing such as data discard. When the call control information processing unit 104 determines that the communication does not need to be restricted, the call control information processing unit 104 transmits the communication to the ONU connection line 900 via the outside line processing unit 101.

  When a telephone number that is subject to outgoing calls comes from the extension 300, the call control information detection unit 104 checks the SIP processing unit 105 as to whether or not there is an available line from the monitor result. If there is a vacancy in the SIP processing unit 105, the outgoing information that has reached the packet path control unit 102 is sent to the SIP processing unit 105, and call control processing and voice processing are performed. The SIP processing unit 105 transmits to the protocol conversion unit 106, and the protocol conversion unit 106 performs protocol conversion for sending to the PSTN. The communication control unit 107 performs a PSTN call control process, and the PSTN processing unit 108 performs an interface control for communicating with the PSTN station 500 to transmit an outside line.

  The communication history storage unit 109 records a telephone number record, the number of calls, and a call time when a call is made according to the state of the communication call.

When an incoming call from the PSTN processing unit 108 is subjected to call control processing by the communication control unit 107, the protocol conversion unit 106 converts the protocol. Further, the specific number conversion unit 110 calls the history information stored in the communication history storage unit 109 and sets the extension destination. When the extension destination is determined, the incoming information is sent to the extension selected by the extension processing units 103-1 to 103-n according to the extension destination via the SIP processing unit 105 and the packet path unit 102.
1 and 2, there is one PSTN subscriber line 700 and one PSTN processing unit 108, but there may be more than one.

  With reference to FIG. 3, the specific number transmission process of a common gateway apparatus is demonstrated. Here, FIG. 3 is a flowchart for explaining the specific number transmission processing of the common gateway device. In FIG. 3, the common gateway 100 monitors whether there is a SIP call control message from any of the terminals 200 (S301). If there is a SIP call control message in step 301 (YES), common gateway 100 records the telephone number of the caller and destination (S302).

  The common gateway 100 confirms whether the destination number is a call regulation number indicating a telephone number such as “0120” or “0570” as the first number (S303). If it is not a call regulation number in step 303 (NO), the common gateway 100 performs a through process for passing through the packet path control unit 102 and communicating with the Internet 400 (S309), and ends the specific number call process. To do.

  If it is the 0ABJ number of call restriction in step 303 (YES), the common gateway 100 confirms that the PSTN line has a vacancy (S304). If there is no vacancy in step 304 (NO), the common gateway 100 sends a busy to the calling terminal (S306) and ends. If the PSTN line is free in step 304 (YES), the packet path control unit 102 sends information from the terminal 200 to the SIP processing unit 105 (S305). The SIP processing unit 105 performs SIP message processing (S307).

When the SIP process ends, the protocol conversion unit 106 performs protocol conversion for causing PSTN communication (S308). The communication control unit 107 controls the communication history storage unit 109 to start communication recording (S310) and start charging recording (S311). The communication control unit 107 causes the PSTN processing unit to perform PSTN line communication (S312), and ends.
In the flow of FIG. 3, since attention is paid to outgoing calls, there are no steps for stopping communication recording and charging recording, but those skilled in the art can understand naturally.

  With reference to Table 1, the communication history table recorded in Step 302 of FIG. 3 will be described. In Table 1, the communication history table is composed of a terminal number, a calling telephone number, and a calling history, and records a telephone number, a calling date, and a time that are communicated through the PSTN line for each terminal number. It should be noted that records older than 40 days have been deleted. Further, “terminal i” in the terminal number column is the terminal number of the terminal 200-i. Here, i = 1 to n.

Table 1 Communication history table
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Terminal number Telephone number Call history
(Date, time)
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Terminal 1 0120-111-222 2007.12.20 13:00
0120-555-666 2007.12.10 10:00
0570-333-444 2007.11.15 9:00
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Terminal 2 0120-111-222 2007.12.20 10:00
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Terminal 3 0120-111-222 2007.12.15 8:00
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:::
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Terminal n 0570-999-000 2007.12. 5 11:00
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With reference to FIG. 4, an incoming call process from a specific number will be described. Here, FIG. 4 is a flowchart for explaining the incoming call processing from the PSTN. In FIG. 4, the common gateway 100 monitors incoming calls from the PSTN station 500 (S401). When there is an incoming call from the PSTN station 500 in step 401 (YES), the common gateway 100 records the caller number from the PSTN station 500 (S402). The common gateway 100 reads the communication history table transmitted by the terminal 200 (S403), and extracts incoming candidates in the following steps.

  The communication control unit 107 determines whether the PSTN caller number is in the calling telephone number of the communication history table (S404). When the PSTN caller number is not in the calling telephone number of the communication history table in step 404 (NO), the communication control unit 107 selects “first incoming call” for all the extensions (S405). Here, “first incoming call” and the like will be described later. The protocol conversion unit 106 performs a protocol conversion process from PSTN to SIP (S411). The specific number conversion unit 110 converts the telephone number of the called party into the IP address of the extension (S412). The SIP processing unit 105 generates a call connection message (S413). The packet path control unit 102 performs packet switching processing on the IP address described in the call connection message (S414). When the route control is confirmed, SIP communication control is started (S415) and is ended.

  When the PSTN caller number is at the calling telephone number in the communication history table at step 404 (YES), the communication control unit 107 determines whether the incoming call corresponds to “match incoming” (S406). When the incoming call corresponds to “match incoming” in step 406 (YES), the communication control unit 107 selects the matched extension (S407), and the process proceeds to step 411.

  When the incoming call does not correspond to “match incoming” in step 406 (NO), the communication control unit 107 determines whether the incoming call corresponds to “third incoming” (S408). When the incoming call corresponds to “third incoming call” in step 408 (YES), the communication control unit 107 selects the extension extracted as the third incoming call (S409), and transitions to step 411.

  When the incoming call does not correspond to the “third incoming call” in step 408 (NO), the communication control unit 107 selects the extension extracted as the second incoming call (S410), and proceeds to step 411.

  With reference to Table 2, “matching incoming call”, “first incoming call”, “second incoming call”, and “third incoming call” in the description of FIG. 4 will be described. The incoming call received at step 401 in FIG. 4 does not specify an extension. Therefore, the common gateway 100 needs to specify the extension and give the extension IP address. Therefore, the common gateway 100 specifies / estimates the destination extension using the transmission history from the extension to the PSTN line.

  The incoming call display condition table of Table 2 includes a name, a caller-recipient specifying condition, terminal designation, and display. As the name goes down, the certainty of the extension is higher. The name indicates a classification corresponding to the type of incoming call. The caller-recipient specifying condition indicates the relationship between the number of the terminal 200 and the destination telephone number. The terminal designation indicates designation of a receiving terminal for receiving an incoming call. The display indicates a screen and audio audible display instruction on the terminal.

  The caller-recipient specifying condition indicates the matching condition based on the return call time based on the determination of the time from the extension call to the incoming call, and the determination condition with the terminal 200 based on the number of communication times. In the terminal designation, a terminal designation condition for designating a terminal to receive a call is described from the conditions selected by the caller-recipient specifying condition. Based on this condition, the terminal 200 with the best condition is selected.

  The display indicates the display method for the designated terminal 200. Like the coincidence call, the most prominent number is lit with a telephone number display and a coincidence ringing. In addition, when there are a plurality of candidates such as the first incoming call to the third incoming call, a terminal that is highly likely to respond to the incoming call from the PSTN line by changing the blinking of the display or ringing of the ringtone. It can be displayed according to.

Table 2 Incoming call display condition table
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Name Caller-Recipient identification condition Terminal designation Display
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More than 7 days have passed since the first incoming call was disconnected
No communication history. Silence
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Within 24 hours to 7 days after disconnecting the second incoming call The terminal closest to the condition is flashing.
With communication history Select (3-6 units) Second incoming ring
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Within 3 minutes to 24 hours after the 3rd incoming call disconnection, the terminal that is closest to the conditions is displayed.
There is communication history. Selection (1 to 3) Third incoming ring
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Incoming within 3 minutes after disconnection. Corresponding terminal Called number display Matching incoming call Communication more than once within 24 hours Matching incoming call ringing
There is history.
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Referring to Table 3, it is assumed that the common gateway apparatus 100 holding the communication history table of Table 1 receives an incoming call from the PTSN station 500 at 13:02 on December 20, 2007. Here, the incoming telephone number is assumed to be 0120-111-222.

  The communication control unit 107 subtracts the call origination time from the current time for the record having the same telephone number in the communication history table held by the communication history storage unit 109, and selects the incoming call display based on the incoming call display condition table in Table 2. . Table 3 schematically shows these. The incoming call display selection table in Table 3 is composed of a terminal number, a current time-transmission history, and an incoming call display selection. As apparent from Table 3, under this condition, the terminal 200-1 displays the incoming call number, rings the matching incoming call, and makes the incoming call.

Table 3 Incoming call selection table
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Terminal number Current time-Incoming call display
Select outgoing call history
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Terminal 1 0th 00:02 Matching incoming call
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Terminal 2 0th 03:02 Third incoming call
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Terminal 3 5th 05:02 Second incoming call
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According to this embodiment, when a call is returned from the PSTN line side, the most influential terminal can be called as the influential terminal. Therefore, it is possible to improve the incoming call accuracy even though it is a shared line.

  Further, since the PSTN line is used in common, it is possible to notify the remaining terminals of the first incoming call by judging that the incoming call from the number having no communication history is likely to be wrong. Furthermore, since there is a notification that there has been an incoming call, it is possible to confirm whether or not the communication was for the user.

It is a hardware block diagram of a communication system. It is a functional block diagram of a common gateway. It is a flowchart explaining the specific number transmission process of a common gateway apparatus. It is a flowchart explaining the incoming call process from PSTN.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Common gateway, 101 ... External line processing part, 102 ... Packet path control part, 103 ... Extension processing part, 104 ... Call control information detection part, 105 ... SIP processing part, 106 ... Protocol conversion part, 107 ... Communication control part, DESCRIPTION OF SYMBOLS 108 ... PSTN processing part 109 ... Communication history storage part 110 ... Specific number conversion part 200 ... Terminal 300 ... Extension 400 ... Internet 500 ... PSTN station 600 ... External line 700 ... PSTN subscriber line 800 ... ONU, 900 ... ONU connection line.

Claims (2)

A gateway device that accommodates an individual IP extension individually connected to a plurality of VoIP terminals, an individual IP extension corresponding to the individual IP extension one-to-one, and a shared non-IP extension shared by the plurality of VoIP terminals. And
Call detection means for detecting a call from the individual IP extension and a destination telephone number; and an internal / external line connection means for connecting the individual IP extension to either the individual IP external line or the shared non-IP external line;
A specific number registration means for registering a specific telephone number;
Specific number determination means for determining whether the destination telephone number detected by the transmission detection means is a telephone number registered in the specific number registration means;
VoIP communication termination means for terminating the VoIP communication protocol of the individual IP extension;
Data conversion means for converting data from the individual IP extension into the format of the shared non-IP external line and converting data from the shared non-IP external line into the format of the individual IP extension;
The internal / external line connecting means, when the call detection means does not detect a call from the individual IP extension, the individual IP extension is connected to an individual IP external line corresponding to the individual IP extension,
When the call detection means detects a call from the individual IP extension, and the specific number determination means determines that the call destination telephone number is not a telephone number registered in the specific number registration means, The internal / external line connecting means continues to connect the individual IP extension to the individual IP external line corresponding to the individual IP extension,
When the call detection unit detects a call from the individual IP extension, and the specific number determination unit determines that the call destination telephone number is a telephone number registered in the specific number registration unit, The internal / external line connection means connects the individual IP extension to the shared non-IP external line, the VoIP communication termination means terminates the VoIP communication protocol from the individual IP extension,
The data conversion means converts data between the individual IP extension and the shared non-IP outside line to each other. The gateway device according to claim 1,
When the internal / external line connection means connects an individual IP extension to a shared non-IP external line, the shared non-IP external line transmission stores the call destination telephone number detected by the call detection means in association with the individual IP extension. A history storage means;
When there is an incoming call from the shared non-IP external line, if a telephone number that matches the telephone number of the caller of the incoming call is stored in the non-IP external line transmission history storage means,
A common gateway device that preferentially calls an individual IP extension stored in association with the telephone number.

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