JP4788553B2 - Network connection device - Google Patents

Description

  The present invention relates to a network connection apparatus that can connect an IP (Internet Protocol) telephone to a plurality of types of networks capable of telephone communication such as an IP network, an analog telephone network, and an ISDN (Integrated Services Digital Network). The present invention relates to a network connection apparatus that can transmit a hold sound when a telephone is put on hold to telephones under a network other than an IP network.

  In the IP phone, the input analog voice is A / D converted and compressed on the transmission side, then packetized and transmitted to the other party, and the reception side extracts the voice data from the received voice data packet and decompresses it. Then, D / A conversion is performed and analog sound is reproduced.

  In addition, as a method for sending a hold sound of an IP phone, a hold sound source is provided in advance in the IP phone, a hold command is received from the other party's hold phone, and a handset or the like is directly received from the hold sound source inside the phone according to the command. There is a method of making a caller hear through a speaker (see Patent Document 1).

  However, this method has a problem that it is not possible to send a hold tone to telephones under a network other than the IP network.

JP 2000-59471 A (FIG. 9)

  The present invention has been made to solve such problems, and an object of the present invention is to enable transmission of a hold sound when an IP telephone is put on hold to a telephone under a network other than the IP network. That is.

The invention of claim 1 is a network connection apparatus capable of switching and connecting an IP telephone to an IP network , an analog telephone network, or an ISDN , a connection destination information storage unit for storing connection destination information indicating a connection destination network, and a hold Command generation means, hold sound source, means for detecting a hold operation of the IP telephone, and connection destination detection for detecting a connection destination network by referring to the connection destination information storage unit in response to detection of the hold operation And a hold command generated by the hold command generating means when the connection destination is an IP network, and a hold sound generated by the hold sound source when the connection destination is an analog telephone network or ISDN. The network connection device is provided with a holding information sending means for sending the message .
According to a second aspect of the present invention, in the network connection device according to the first aspect, in response to the detection of the hold operation , the hold command transmission for sending the hold command generated by the hold command generating means to the connection destination network. Means, a hold sound sending means for sending a hold sound generated by the hold sound source to the connection destination network based on reception of a rejection response from the connection destination network, the connection destination detection means, and hold information A network connection apparatus comprising: sending means; or means for selectively operating the hold command sending means and the hold sound sending means .

(Function)
According to the first aspect of the present invention, when a hold operation is performed on the IP telephone , the connected network is detected by referring to the connection destination information storage unit, and if the connected network is an IP network, the call is held. A command is generated and transmitted. When the connected network is an analog telephone network or ISDN , a hold tone is generated and transmitted.
According to the invention of claim 2, when a hold operation is performed on the IP telephone , the connected network is detected by referring to the connection destination information storage unit, and if the connected network is an IP network, the hold is made generates a command is sent, the network of the connected analog telephone network, the operation of sending to generate music on hold in the case of ISDN, or network to send and generates a hold command in connection receiving a rejection response In this case, an operation for generating and sending a holding tone is selectively performed.

According to the present invention, it is possible to generate a hold sound when an IP telephone is put on hold and transmit it to a telephone under the analog telephone network or ISDN . In addition, since no hold sound is transmitted to the IP network, an increase in traffic on the IP network can be suppressed.

  FIG. 1 is a diagram showing a system configuration in which an IP telephone can be connected to an IP network, an analog telephone network, and an ISDN by a gateway device which is a network connection device according to an embodiment of the present invention.

  As shown in FIG. 1, the external line of the gateway device 1 is connected to the IP network 2, the analog telephone network 3, and the ISDN 4, and a plurality of IP telephones (two in this case) 8, 9 are connected to the internal line. Yes. The users of the IP telephones 8 and 9 are the users of the IP telephone 5 connected to the IP network 2, the analog telephone 6 connected to the analog telephone network 3, and the ISDN compatible telephone 7 connected to the ISDN 4 and the gateway device. 1 can be used to make a call.

  FIG. 2 is a block diagram showing the internal configuration of the gateway device 1. The gateway device 1 is composed of a microcomputer, and includes a control unit 11 that controls the entire device, an extension connection unit 12 that accommodates IP telephones 8 and 9, an IP network 2 that is an external line, an analog telephone network 3, And an external line termination unit 13 for terminating the ISDN 4, a data processing unit 14 for executing necessary data conversion processing between the input / output data of the extension connection unit 12 and the input / output data of the external line termination unit 12, and a user Operation unit 15 for performing various settings of the gateway device 1, a storage unit 16 for storing various setting information, extension connection information, external line connection information, etc. used when the gateway device 1 operates, And a holding sound source 17 for generating sound.

  In the system having the above configuration, when the user of the IP telephone 8 accommodated in the extension of the gateway device 1 makes a call with the user of the IP telephone 5 connected to the IP network 2, the dialing of the IP telephone 8 is performed. By operating the key, the telephone number of the IP telephone 5 is input. This telephone number is notified to the control unit 11 from the extension connection unit 12 of the gateway 1. The control unit 11 refers to the table stored in the storage unit 16 to identify that the telephone number notified from the extension connection unit 12 is that of the IP telephone connected to the IP network 2. Based on this identification, the control unit 11 sends the telephone number of the IP telephone 5 from the external line termination unit 13 to the IP network 2. When an incoming call arrives at the IP telephone 5 and the user performs a response operation, the use of the IP telephone 8 and the user of the IP telephone 5 can make a call via the gateway device 1 and the IP network 2.

  At this time, since the control unit 11 is a call between IP telephones, the data processing unit 14 performs voice data conversion processing as in the case of a call with an analog telephone 6 or an ISDN-compatible telephone 7 described later. Rather, the input / output data of the extension connection unit 12 and the input / output data of the outer line termination unit 12 are operated as they are.

  When the user of the IP telephone 8 makes a call with the user of the analog telephone 6 connected to the analog network 3, the dial key of the IP telephone 8 is operated to input the telephone number of the analog telephone 6. This telephone number is notified to the control unit 11 from the extension connection unit 12 of the gateway 1. The control unit 11 refers to the table stored in the storage unit 16 to identify that the telephone number notified from the extension connection unit 12 is that of an analog telephone connected to the analog network 3. Based on this identification, the control unit 11 sends the telephone number of the analog telephone 6 from the external line termination unit 13 to the analog network 3. When an incoming call arrives at the analog telephone 6 and the user performs a response operation, the use of the IP telephone 8 and the user of the analog telephone 6 can make a call via the gateway device 1 and the analog network 3.

  At this time, since the control unit 11 is a call between the IP phone and the analog phone, the control unit 11 converts the voice data packet output from the IP phone 8 and input from the extension connection unit 12 to the data processing unit 14 into an analog voice signal. The analog voice signal transmitted from the external line termination unit 13 to the analog telephone network 3 and input from the analog telephone network 3 to the data processing unit 14 via the external line termination unit 13 is converted into a voice data packet, and the internal line connection unit 12 The data processing unit 14 is operated so as to be sent to the IP telephone 8.

  When the user of the IP telephone 8 makes a call with the user of the ISDN compatible telephone 7 connected to the ISDN 4, the telephone number of the ISDN compatible telephone 7 is input by operating the dial key of the IP telephone 8. This telephone number is notified to the control unit 11 from the extension connection unit 12 of the gateway 1. The control unit 11 refers to the table stored in the storage unit 16 to identify that the telephone number notified from the extension connection unit 12 is that of an ISDN compatible telephone connected to the ISDN 4. Based on this identification, the control unit 11 sends the telephone number of the ISDN-compatible telephone 7 from the external line termination unit 13 to the ISDN 4. When the ISDN compatible telephone 7 is received and the user performs a response operation, the use of the IP telephone 8 and the user of the ISDN compatible telephone 7 can make a call via the gateway device 1 and the ISDN 4.

  At this time, since the control unit 11 is a call between the IP telephone and the ISDN compatible telephone, the voice data packet output from the IP telephone 8 and input from the extension connection unit 12 to the data processing unit 14 is converted into an analog voice signal. Then, the data is sent from the external line termination unit 13 to the ISDN 4, and the analog voice signal input from the ISDN 4 to the data processing unit 14 via the external line termination unit 13 is converted into a voice data packet and transmitted from the extension connection unit 12 to the IP telephone 8 Thus, the data processing unit 14 is operated.

  Next, the hold sound transmission control of the gateway 1 when a call is put on hold by the IP telephone 8 will be described. In the gateway device 1 of the present embodiment, either the first hold sound transmission control or the second hold sound transmission control can be selected by setting from the operation unit 15.

  FIG. 3 is a flowchart of the first hold sound transmission control. This flow starts when the control unit 11 detects a hold operation of the IP telephone 8 via the extension connection unit 12. When the control unit 11 detects the hold operation of the IP phone 8, the control unit 11 reads the connection destination information of the IP phone 8 from the storage unit 16 (step S1). This connection destination information is information indicating whether the IP telephone 8 is talking to a telephone connected to the IP network 2, the analog telephone network 3, or the ISDN 4. It is stored in the storage unit 16.

  Next, it is determined whether or not the connection destination is the IP network 2 (step S2). If the connection destination is the IP network 2, a hold command is generated and transmitted to the IP telephone of the connection destination via the IP network 2 ( Step S3). Based on the reception of the hold command, the connected IP telephone causes the hold sound source to output a hold sound. If the connection destination is not the IP network 2, that is, the analog telephone network 3 or ISDN 4, a holding sound is generated from the holding sound source 17 and transmitted to the connection destination telephone via the connection destination network. The connection destination telephone outputs the received hold sound from the handset.

  FIG. 4 is a flowchart of the second hold sound transmission control. This flow starts when the control unit 11 detects a hold operation of the IP telephone 8 via the extension connection unit 12. When detecting the hold operation of the IP telephone 8, the control unit 11 generates a hold command and sends it to the connection destination telephone via the connection destination network (step S11). Next, it is determined whether or not a rejection response to the sent hold command has been returned (step S12), and if it has been returned, a hold sound is output from the hold sound source 17 and the connection destination via the connection destination network is output. The message is sent to the telephone (step S13).

  Here, when the destination of the hold command is the IP telephone 5, since the hold sound is output from the built-in sound source of the IP telephone 5 based on the hold command, the rejection response is not returned. However, if the destination of the hold command is either the analog telephone 6 or the ISDN-compatible telephone 7, the switch in the analog network 2 and the switch in the ISDN 4 cannot interpret the hold command, so a rejection response is made. Return it. As a result, when the connection destination of the IP telephone 8 is either the analog telephone 6 or the ISDN-compatible telephone 7, the hold sound is transmitted from the gateway device 1.

  Thus, according to the gateway device 1 of the embodiment of the present invention, when an IP telephone is put on hold, a hold command is sent if the held telephone is an IP telephone connected to the IP network, and the analog telephone network In the case of a telephone connected to either ISDN or ISDN, a hold sound is transmitted, so that a hold sound can be transmitted to a telephone under a network other than the IP network, and an increase in traffic on the IP network is suppressed. Is possible.

1 is a diagram illustrating a configuration of a system in which an IP telephone can be connected to an IP network, an analog telephone network, and an ISDN by a gateway device which is a network connection device according to an embodiment of the present invention. It is a block diagram which shows the internal structure of the gateway apparatus of embodiment of this invention. It is a flowchart of the 1st hold sound transmission control in the gateway apparatus of embodiment of this invention. It is a flowchart of the 2nd holding tone transmission control in the gateway apparatus of embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Gateway apparatus, 2 ... IP network, 3 ... Analog telephone network, 4 ... ISDN, 5, 8, 9 ... IP telephone, 6 ... Analog telephone, 7 ... ISDN-compatible telephone, 11... Control unit, 13.

Claims (2)

A network connection device capable of switching and connecting an IP telephone to an IP network , an analog telephone network, and an ISDN ,
In response to detection of the hold operation , a connection destination information storage unit that stores connection destination information indicating a connection destination network, a hold command generation unit, a hold sound source, a hold operation of the IP telephone , the reference to the connection destination information storage unit, a connection destination detection means which detects the connection of network, when the connection destination is an IP network sends a hold command generated by said holding command generating means, said connection A network connection device comprising: a hold information sending means for sending a hold sound generated by the hold sound source when the destination is an analog telephone network or ISDN . The network connection device according to claim 1,
In response to the detection of the hold operation , the hold command sending means for sending the hold command generated by the hold command generating means to the connection destination network, and the reception of the rejection response from the connection destination network, Selectively operates a hold sound sending means for sending the hold sound generated by the hold sound source to the connection destination network, the connection destination detecting means and the hold information sending means, or the hold command sending means and the hold sound sending means. network connection device being characterized in that a means for.

Images