JP3654215B2 - Packet network voice network complex system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packet network voice network complex system, and more particularly to a packet network voice network complex system that performs voice communication on a packet network represented by an Internet Protocol (IP) network.
[0002]
[Prior art]
A technique for performing a voice call on a packet network typified by an IP network is being established. Until now, voice communication has been used properly such that a public telephone line network (PSTN) is used, and data communication that does not require real-time performance other than voice is used using a packet network represented by an IP network. However, with the advancement of IP network technology, network control technology that reduces transmission delay, delay fluctuation, and the like is about to enter a practical stage.
[0003]
When performing a voice call on a packet network typified by an IP network, a dedicated terminal (such as an IP telephone terminal) is required. On the other hand, in order to perform a voice call using an IP network with an existing telephone terminal without using a dedicated terminal such as an IP telephone terminal, a device called a media gateway is required. That is, as shown in FIG. 6, an analog telephone 11 that is an existing telephone terminal is usually connected to the telephone network 13 via a subscriber exchange 12 to make a voice call. In order to make a voice call using the IP network 16 using an analog telephone 14, a media gateway 15 is required.
[0004]
The media gateway 15 has a function of packetizing a signal (DP, PB, or signal message) used in an existing telephone and sending the packet to an opposite device installed in the IP network 16 or a server for call control. Further, it is necessary to have a function of packetizing and transmitting a voice signal, and a function of reproducing voice when receiving packetized voice data and transmitting the voice signal to an existing telephone terminal.
[0005]
As a device for connecting an existing telephone terminal to an IP network, there is already a subscriber exchange incorporating a media gateway function in addition to the media gateway 15 described above. However, these devices are used by changing the connection or setting to use either one of the networks in advance. For this reason, the network cannot be properly used by the user. For example, in the case of a commercial telephone, it is impossible to use a network for each call, such as using a telephone network with high sound quality and using an IP network with a low call charge for private use. Therefore, there is a need for a system that can properly use a network for each call, that is, determine a route based on a telephone number input by a user.
[0006]
The incoming telephone number notification method input by the user can be classified into two types. The first method is a system typified by DP and PB signals of analog telephones. This is a method in which one digit and one digit are notified each time. This is now called a sequential notification method. The second method is the ISDN Q. A system represented by 931 is a system in which a telephone number input by a user is accumulated and an incoming telephone number is notified by one message. This is now called a collective notification method.
[0007]
H.264 is a signaling protocol used in VoIP (Voice over Internet Protocol), which is a technology for transferring voice data over IP, which is a data communication protocol. 323, H.H. 248, MGCP (Media Gateway Control Protocol), SIP, and the like. H.323 and SIP are batch notification methods. 248 and MGCP are sequential notification methods. In addition, the above Q.3 as a signaling protocol used in the existing telephone network. There are V5 etc. in addition to 931. When V5 signaling is used for an analog telephone that generates a DP, a sequential notification method is used in which one digit and one digit are notified each time.
[0008]
Since analog telephones are a sequential notification system, when connecting to a batch notification system network, a one-digit signal transmitted by the sequential notification system is accumulated inside the network connection device, and the input of the telephone number is completed. It must be detected and communicated to the network as a single message. On the other hand, in order to transmit the incoming telephone numbers received by the collective notification system to the network of the sequential notification system, it is necessary to transmit one digit of the incoming telephone number at a certain interval.
[0009]
[Problems to be solved by the invention]
In the case of a system that selects a network to be used based on a telephone number entered by a user, some of the routes may use sequential notification method signaling, and others may use a collective notification method. . In this case, the device that controls the route switching function temporarily stores a sequential notification type signal input from an analog telephone, and determines a route based on the stored incoming telephone number.
[0010]
On the other hand, when the determined route is the sequential notification method, it is necessary to transmit one by one from the first number of the incoming telephone number. For this reason, the device that manages the route switching function temporarily stores the sequential notification method signal input from the analog telephone, determines the route based on the stored incoming phone number, and determines the incoming phone number as 1 after the route is determined. It takes time to tell the network digit by digit. From the user's point of view, after the telephone number is input, the user waits longer than necessary until the other party is called.
[0011]
The present invention has been made in view of the above points, and an object of the present invention is to provide a packet network voice network complex system capable of determining a route based on a telephone number input by a user and reducing waiting time.
[0012]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention uses an analog telephone to make a call between a selected partner terminal or a partner server among a partner terminal of a telephone network and a partner server of one or more packet networks. This is a packet network voice network complex system that performs signal and voice only on the determined route by selecting the network to be used from the telephone network and one or more packet networks based on dial signals from analog telephones. A distribution device that transmits data and a signal and voice data from the determined route to an analog telephone, and one or two or more packet networks are provided, and the voice data from the distribution device is packetized. In addition, the signal from the distribution device is converted to a signaling protocol used in the corresponding packet network and set accordingly. One or two or more first media gateways that transmit to a designated packet network, convert voice packets from the corresponding packet network to voice data, and send the voice packets to the distribution device, and corresponding to the telephone network A second media gateway configured to transmit voice data from the sorting device, convert a signal from the sorting device into a signal used in a telephone network, and send the received voice data to the sorting device; And a subscriber exchange that terminates voice data and signals transmitted from the second media gateway, determines a route in the telephone network, exchanges voice data, converts signals, and transfers them. Is.
[0013]
According to the present invention, in the distribution device, all media until the route to be selected is selected from the telephone network and one or more packet networks based on the dial signal from the analog telephone. Notify the gateway (sequentially) of the signal (number), and when the backward path that has received several digits of the number is determined, call processing abandonment processing is performed for the media gateway in other directions other than the determined path As a result, it is possible to shorten the time until the call is received as compared with the conventional system in which the dial signal is transmitted to the network one digit at a time after the route is determined after all the telephone numbers are accumulated.
[0015]
In order to achieve the above object, the present invention uses an analog telephone between a partner terminal of a telephone network and a partner server of one or two or more packet networks between a selected partner terminal or a partner server. A packet network voice network complex system for making a call, which terminates a dial signal from an analog telephone and transmits a signal using a dedicated signaling protocol, and a telephone network and one or two based on the signal from the line concentrator. A distribution device that selects a network to be used from the above packet networks, transmits signals and voice data only to the determined route, and transmits signals and voice data from the determined route to an analog telephone; Or, it is provided corresponding to two or more packet networks, and converts voice data from the sorting device into packets and receives signals from the sorting device. Is converted into a signaling protocol used in the corresponding packet network and transmitted to the corresponding packet network, and voice packets from the corresponding packet network are converted into voice data. One or two or more first media gateways to be transmitted to the distribution device and the telephone network are provided corresponding to the telephone network, the voice data from the distribution device is transmitted, and the signal from the distribution device is a signal used in the telephone network The voice data received is converted to a second media gateway that is sent to the distribution device, and the voice data and signals sent from the second media gateway are terminated to determine the route within the telephone network. And a subscriber exchange for exchanging and transferring voice data and signals.
[0016]
In the present invention, based on a distribution device, based on a dial signal from an analog telephone, a network to be used is selected from a telephone network and one or more packet networks, a route is determined, and a voice path is established. As a result, the time until the incoming call can be shortened as compared with the conventional system that transmits the dial signal to the network one digit at a time after the route is determined.
[0018]
In order to achieve the above object, the sorting apparatus according to the above invention is registered in advance in the storage means for storing the inputted telephone numbers one by one, the number sequence stored by the storage means, and the database. A route determination means for determining a route by comparing and comparing with a route selection number sequence, and the storage means is input to the first and second media gateways until the route is determined by the route determination means. When the route is determined by the first notification means for notifying the telephone number and the route determination means, the call processing is performed for the first or second media gateway in a route other than the determined route. When the route is determined by the transmission unit that transmits the abandonment / rejection rejection instruction signal and the route determination unit, it is stored by the storage unit in the first or second media gateway of the determined route. And having a second notifying means for notifying the input telephone number following the number column.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a system configuration diagram of an embodiment of a packet network voice network complex system according to the present invention. In this embodiment, the analog telephone 21 is connected to the media gateways 23, 24 and 25 via the distribution device 22, the media gateways 23 and 24 are connected to the IP network 26 and the IP network 27, and the media gateway 25 is subscribed. Is connected to the telephone network 29 via the exchange 28 and the analog telephone 21 uses not only the telephone network 29 but also the IP network 26, the IP network 27 and the telephone network 29 via the media gateways 23, 24 and 25. Voice calls.
[0020]
The analog telephone 21 is a telephone terminal that can generate dial signals such as DP (dial pulse) signals and PB (push button) signals. The distribution device 22 is a device that selects a network to be used based on the DP signal or PB signal received from the analog telephone 21 and transmits the signal and voice only to the determined route. In addition, the distribution device 22 notifies the media gateway other than the selected route that it is in a busy state or performs processing for preventing incoming calls.
[0021]
The first and second media gateways 23 and 24 convert the voice data received from the distribution device 22 into IP packets, convert the received signals into signaling protocols used in the IP networks 26 and 27, and perform call control. It transmits to the servers 30 and 31 or the opposite device. Further, the first and second media gateways 23 and 24 restore the voice packets received from the IP networks 26 and 27 to voice data and transmit the voice data to the distribution device 22.
[0022]
The third media gateway 25 transmits the voice data received from the analog telephone 21 via the distribution device 22 to the telephone network 29 and simultaneously transmits the voice data received from the telephone network 29 to the distribution device 22. Therefore, the third media gateway 25 does not need an IP packetization function for voice data. Further, the third media gateway 25 converts the signal received from the distribution device 22 into a signal used in the telephone network 29 and transmits it to the subscriber exchange 28.
[0023]
The subscriber exchange 28 terminates the voice data and signal received from the media gateway 25, determines a route in the telephone network 29 based on the received signal, exchanges voice data, converts the signal, and transfers it. Device.
[0024]
FIG. 2 shows a block diagram of an embodiment of the sorting device 22 described above. As shown in the figure, the distribution device 22 includes a signal detection device 221, a signal discrimination transfer device 222, and a switch circuit 223. The signal detection device 221 detects a DP signal or a PB signal from the analog line, converts it into an internal signal, and transmits it to the signal determination transfer device 222.
[0025]
The signal discriminating / transferring device 222 selects a route, that is, a media gateway based on the received internal signal, and then sends a signal to the selected media gateway using the device internal signal means. An instruction is given to the switch circuit 223 so as to create an audio path. For the media gateway other than the selected route, processing is performed to make it impossible to receive incoming calls. The switch circuit 223 switches a voice path with an analog line connected via the signal detection circuit 221 based on an instruction from the signal determination transfer device 222.
[0026]
Next, the operation of the above embodiment will be described. The user dials a desired telephone number using the analog telephone 21. That is, a PB signal or a DP signal is generated. It is possible to select a network to be used according to the dialed telephone number. For example, when a normal telephone number (for example, 03-1234-5678) is dialed, the telephone network 29 is dialed, and when a number with 111 added to the beginning of the telephone number (111-03-1234-5678) is dialed. Is assumed to make a call using the IP network 27 when the IP network 26 is dialed with a number (222-03-1234-5678) with 222 added to the beginning of the telephone number. In this case, it is not determined which network is used until the upper three digits of the telephone number are input.
[0027]
The signal detection device 221 in the distribution device 22 detects the PB signal or DP signal of the above telephone number input from the analog telephone 21 via the analog line, and supplies it to the signal discrimination transfer device 222 as an internal signal. . Thereby, the signal discrimination transfer device 222 performs the operation according to the flowchart of FIG.
[0028]
That is, when the signal discrimination transfer device 222 first receives an internal signal corresponding to the PB signal or DP signal from the signal detection device 221, that is, a signal corresponding to one digit of the telephone number (step S 1), the received number is stored. (Step S2). Next, the signal discriminating / transferring device 222 checks whether the accumulated number sequence can be determined by comparing with the number sequence registered in the database (step S3).
[0029]
If the route cannot be determined, the received number is notified to all the media gateways 23 to 25 (step S4), and then the process returns to step S1 to receive the next one-digit number input, and the following steps S2, S3, The operation of S4 is repeated until the route can be determined by comparing and collating the accumulated number sequence with the number sequence registered in the database. That is, the signal discriminating / transferring device 222 accumulates the received number one digit at a time and repeats the notification of the received number one digit to all the media gateways 23 to 25 until the route can be determined.
[0030]
Here, it can be determined as route A when the upper three digits of the telephone number are “111”, route B when “222”, and route C otherwise. Therefore, as an example, assume that the user dials “1”, “1”, and “1” in succession. By inputting “1” for the third time, the three-digit number “111” is accumulated. Then, in the signal discrimination transfer device 222, the accumulated number sequence “111” is the same as the route selection number sequence “111” registered in the database, and the route is the route A of the first IP network 26. Is determined. When the signal discriminating / transferring device 222 discriminates the route A, the signal discriminating / transferring device 222 subsequently interrupts the calling process for the routes other than the route A, that is, the second IP network 27 and the telephone network 29 and rejects the incoming call. As described above, an instruction to abandon call processing / reject call is issued to media gateways 24 and 25 in routes B and C other than route A using the internal signal (step S5).
[0031]
The media gateways 24 and 25 which have received the call processing abandonment / rejection rejection instruction use the signaling protocol used in each network to perform the same call processing abandonment / rejection rejection on the IP network 27 and the telephone network 29. Give instructions. The instruction method differs depending on the signaling protocol used in the IP network 27 and the telephone network 29. For example, in the case of the telephone network 29, a signal corresponding to off-hook is transmitted, and then the port block processing is performed.
[0032]
Next, the signal discrimination transfer device 222 instructs the switch circuit 223 to direct the audio path to the first media gateway 23 (step S6). A voice signal input from the analog telephone 21 by this instruction is connected to the IP network 26 via the switch circuit 223 and the media gateway 23. Thereafter, the signal discrimination transfer device 222 receives the signal (one digit of the telephone number) from the signal detection device 221 (step S7), and notifies the first media gateway 23 of the received telephone number (step S8). Repeat until all remaining phone numbers are received and notified.
[0033]
Similarly, when the user tries to dial in a normal telephone number (for example, 03-1234-5678) of the telephone network 29, the first three digits, i.e., "0", "3", "1" are continuously dialed. At this point, the signal discriminating / transferring device 222 is addressed to the route C because the accumulated number sequence “031” is different from any of the route selection number sequences “111” and “222” registered in the database. A route is determined (step S3), and then the call processing is interrupted for routes other than the route C, that is, the first and second IP networks 26 and 27, and the incoming call is rejected. An instruction to abandon the calling process / reject incoming call is issued to the media gateways 23 and 24 in the routes A and B other than the route C using the internal signal (step S5).
[0034]
On the other hand, at this time, since the upper three digits “031” of the telephone number has already been notified to the media gateway 25 in the route A by the process of step S4, the media gateway 25 continues to the upper four digits of the telephone number. Input from the eyes (steps S7, S8). Therefore, according to the present embodiment, compared with the conventional method in which all digits of the telephone number are temporarily stored and the route is determined, and then the telephone number is notified to the telephone network one digit at a time, according to the present embodiment, Line connection is possible.
[0035]
In this way, according to the present embodiment, the user can select the network to be used, and can eliminate unnecessary time due to number discrimination by the distribution device 22 provided to realize the network. You can call the other party in a shorter time than before.
[0036]
Next, another embodiment of the present invention will be described. FIG. 4 shows a system configuration diagram of another embodiment of a packet network voice network complex system according to the present invention. In the figure, the same components as those in FIG. The embodiment shown in FIG. 4 is characterized in that the concentrator 33 is used. An analog telephone may use a concentrator for transmission from a concentrator or for long-distance transmission. In this embodiment, the concentrator 33 may terminate the DP signal generated by the analog telephone 21 and transmit the signal using a dedicated signaling protocol. Examples of signaling protocols include V5.1 (ETS 300 324-1), V5.2 (ETS 300 347-1), GR-303 (Telcordia GR-303-CORE), and the like.
[0037]
In this embodiment, the distribution device 34 connected between the line concentrator 33 and the media gateways 23 to 25 includes a signal discrimination transfer device 341 and a switch circuit 342 as shown in FIG. Since the signal discrimination transfer device 341 accommodates the signaling protocol, the signal detection device is unnecessary. In the present embodiment, the same operation as that of the embodiment of FIG. 1 is performed, and the user can select the network to be used, and is unnecessary due to the number discrimination by the sorting device 34 provided to realize the network. Time can be lost.
[0038]
The present invention is not limited to the above embodiment. For example, one IP network or three or more IP networks may be used. Also, although it has been decided which of the IP networks 26 and 27 should be selected by the three-digit route selection number string added to the beginning of the telephone number, the number for selecting the telephone network 29 is also set. In addition, the number of digits in the route selection number string is not limited to three digits (however, the number of digits is smaller than that of a normal telephone number).
[0039]
【The invention's effect】
As described above, according to the present invention, the distribution device selects a network to be used from the telephone network and one or more packet networks based on a dial signal from an analog telephone, and determines a route. Until all the media gateways are notified of the signal (number) sequentially, and when the backward path that has received several digits of the number is determined, to the media gateways in other paths other than the determined path By performing call processing abandonment processing, the time to receive is shortened compared to the conventional system in which all the telephone numbers are accumulated and the route is determined and the dial signal is transmitted to the network one digit at a time. Time can be saved and the waiting time until the opponent is called can be shortened.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of an embodiment of the present invention.
FIG. 2 is a block diagram of an embodiment of a sorting apparatus in FIG.
FIG. 3 is a flowchart for explaining the operation of the signal discrimination transfer device in FIG. 2;
FIG. 4 is a system configuration diagram of another embodiment of the present invention.
FIG. 5 is a block diagram of an embodiment of the sorting apparatus in FIG. 4;
FIG. 6 is a configuration diagram of a conventional example.
[Explanation of symbols]
21 Analog phone 22, 34 Sorting device 23, 24, 25 Media gateway 26, 27 IP network 28 Subscriber switch 29 Telephone network 30, 31 Call control server 33 Concentrator 221 Signal detector 222, 341 Signal discrimination transfer device 223, 342 Switch circuit

Claims (2)

A packet network voice network complex system for making a call with a selected one partner terminal or partner server among a partner terminal of a telephone network and a partner server of one or more packet networks using an analog telephone,
Based on the dial signal from the analog telephone, select the network to be used from the telephone network and one or more packet networks, and transmit the signal and voice data only to the determined route. A distribution device for transmitting signals and audio data from the road to the analog telephone;
Provided for the one or more packet networks, converts voice data from the distribution device into packets, and uses the signals from the distribution device in the corresponding packet network One or two or more of which is converted to a signaling protocol and transmitted to the corresponding packet network, and voice packets from the corresponding packet network are converted to voice data and transmitted to the distribution device A first media gateway of
Provided corresponding to the telephone network, transmitting voice data from the sorting device, transmitting a signal from the sorting device into a signal used in the telephone network, and receiving the voice data A second media gateway for transmitting to the distribution device;
A subscriber exchange that terminates the voice data and signals transmitted from the second media gateway, determines a route in the telephone network, exchanges the voice data and converts the signals, and transfers them. The sorting device compares and collates the storage means for storing the inputted telephone number one digit at a time, the number sequence stored by the storage means and the route selection number sequence registered in the database in advance. Route determining means for determining the route, and a first number for notifying the first and second media gateways of the telephone number input to the storage means until the route is determined by the route determining means. When the route is determined by the notification unit and the route determination unit, the call processing abandonment / rejection rejection instruction is given to the first or second media gateway in a route other than the determined route. signal And when the route is determined by the route determination unit, for the first or second media gateway of the determined route, following the number sequence stored by the storage unit A packet network voice network composite system comprising: second notification means for notifying an input telephone number . A packet network voice network complex system for making a call with a selected one partner terminal or partner server among a partner terminal of a telephone network and a partner server of one or more packet networks using an analog telephone,
A line concentrator that terminates the dial signal from the analog telephone and transmits the signal using a dedicated signaling protocol;
Based on the signal from the line concentrator, select the network to be used from the telephone network and one or more packet networks, transmit the signal and voice data only to the determined route, and from the determined route A sorting device for transmitting the signal and voice data to the analog telephone;
Provided for the one or more packet networks, converts voice data from the distribution device into packets, and uses the signals from the distribution device in the corresponding packet network One or two or more of which is converted to a signaling protocol and transmitted to the corresponding packet network, and voice packets from the corresponding packet network are converted to voice data and transmitted to the distribution device A first media gateway of
Provided corresponding to the telephone network, transmitting voice data from the sorting device, transmitting a signal from the sorting device into a signal used in the telephone network, and receiving the voice data A second media gateway for transmitting to the distribution device;
A subscriber exchange that terminates the voice data and signals transmitted from the second media gateway, determines a route in the telephone network, exchanges the voice data and converts the signals, and transfers them. The sorting device compares and collates the storage means for storing the inputted telephone number one digit at a time, the number sequence stored by the storage means and the route selection number sequence registered in the database in advance. Route determining means for determining the route, and a first number for notifying the first and second media gateways of the telephone number input to the storage means until the route is determined by the route determining means. When the route is determined by the notification unit and the route determination unit, the call processing abandonment / rejection rejection instruction is given to the first or second media gateway in a route other than the determined route. signal And when the route is determined by the route determination unit, for the first or second media gateway of the determined route, following the number sequence stored by the storage unit A packet network voice network composite system comprising: second notification means for notifying an input telephone number .

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