JP3134201B2 - Communication processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to communication for enabling communication between a terminal connected to a public telephone network and a terminal connected to a digital communication network such as ISDN. It relates to a processing device.

(Prior art) In recent years, with the spread of digital communication networks such as ISDN, as a communication processing device for connecting a non-ISDN interface terminal device (hereinafter referred to as a non-ISDN terminal) which is a conventional analog communication terminal to the ISDN network, ISDN communication processors have been used.

FIG. 3 is a model configuration diagram for explaining the concept of communication on the ISDN network. Reference numerals 1 and 2 denote an ISDN network and a public telephone network which is a non-ISDN network, respectively. The communication information can be mutually transmitted and received. 4 (a subscript such as a, b or c indicates a separate device; the same applies hereinafter) is an ISDN terminal, 5 is a non-ISDN terminal, 6 is a modem, and 7 is an ISDN terminal.
It is a DN communication processing device.

In order for the non-ISDN terminal 5a and the ISDN terminal 4 connected to the ISDN network 1 to perform communication, an ISDN communication processing device 7a for converting an interface between the non-ISDN interface and the ISDN interface is required.

In order for the non-ISDN terminal 5c connected to the public telephone network 2 via the modem 6a to communicate with the non-ISDN terminal 5b, it is necessary to provide the modem 6b in front of the ISDN communication processing device 7b. is there.

FIG. 4 is a functional block diagram showing the configuration of the ISDN communication processing device 7 shown in FIG. Reference numeral 8 denotes a terminal interface unit for transmitting / receiving information to / from the non-ISDN terminal 5, 9 an interface conversion unit for converting between the non-ISDN interface and the ISDN interface, and 10 a network interface unit for exchanging information signals with the ISDN network 1. Also, a indicates that the communication partner
The connection path between devices when connected to the DN network, b,
It shows a connection path in which a communication partner is connected to a public telephone network connected to an ISDN network.

The ISDN communication processing device configured as described above operates as follows.

First, in the communication from the non-ISDN terminal 5, after the non-ISDN information is notified from the terminal interface unit 8 to the interface conversion unit 9 and the interface conversion into the ISDN information is performed, the communication is performed via the network interface unit 10 through the ISDN network. 1 is sent.

Conversely, the ISDN information from the ISDN terminal 4 is notified from the network interface unit 10 to the interface conversion unit 9, and after being converted as non-ISDN information in the interface conversion unit 9, is notified to the non-ISDN terminal 5. .

That is, in the conventional network configuration, when the communication partner is directly connected to the ISDN network, the non-ISDN terminal 5 and the ISDN communication processing device 7 communicate with each other via the directly connected path a. When the public telephone network is connected to the public telephone network, the non-ISDN terminal 5 and the ISDN communication processing device 7 need to be connected via the modem 6 to the path b.

By the way, the ISDN information as described above is a progress identifier,
According to INS Net Service Interface Volume 3 (Layer 3 Circuit Conversion Edition) (1989 edition, NTT technical reference materials), the progress identifier and
The transmission capacity is specified as follows.

(A). Regarding the progress identifier, the progress content # 1 is notified when interworking with a non-ISDN occurs in a network or when a call passes through a plurality of networks.

Progress content # 2 indicates that the called user is not ISDN.

Progress content # 3 indicates that the calling user is not ISDN.

Progress # 4 indicates that the call once leaving the ISDN has returned to the same location where it left off for transfer in non-ISDN.

(B). Regarding the transmission capability [when used only as a telephone] The information transfer capability is "voice" and the layer 1 identification is μ-1a
w.

[When 3.1 kHz bandwidth is required, such as when using G3 fax and telephone] Information transfer capability is set to "3.1 kHz audio" and layer 1
The identification is μ-1aw.

[Transmission capability coding when receiving a call from the network]-When receiving a call from an INS net user The information transfer capability is "voice", "3.1kHz audio",
In the case of any of “unrestricted digital” or “voice” and “3.1 kHz audio”, the layer 1 identification is μ-1a
Transfer as w.

-In the case of an incoming call from a telephone network user, the information transfer capability is set to "3.1 kHz audio" and layer 1
The identification is transferred as μ−1aw.

(Problems to be Solved by the Invention) However, in the above-described conventional configuration, the interface is simply converted between the ISDN network and the non-ISDN network, and whether the communication partner is directly connected to the ISDN network, IS
It did not have a function to determine whether or not it was connected to the public telephone network connected to the DN network.

Therefore, in the above conventional configuration, as shown in FIG.
When performing data communication from the DN terminal 5, for example, if a communication partner via the modem 6a such as the non-ISDN terminal 5c is connected to the public telephone network 2 which is connected to the ISDN network 1, the ISDN network
Since it is necessary to perform communication between the communication processing device 7 and the non-ISDN terminal 5 via the modem 6, if the communication partner is directly connected to the ISDN network 1 like the ISDN terminal 4, the modem Since the communication must be performed without passing through the communication network 6, the other party is directly connected to the ISDN network 1 or is connected to the public telephone network 2 which is connected to the ISDN network 1 when the communication is performed. It is necessary for the user to judge whether the communication is performed or not, and perform communication.

An object of the present invention is to provide a communication processing apparatus for a digital communication network such as ISDN, which eliminates the above-mentioned problems.

(Means for Solving the Problems) In order to achieve the above object, a communication processing apparatus according to the present invention comprises a network interface unit for transmitting / receiving a digital communication network and an information signal, and a terminal for communicating with an analog communication terminal. An interface unit, a data input unit for inputting external data, and a data output unit for outputting data to the outside; an interface conversion unit for performing interface conversion between a network interface unit and a terminal interface unit; Analyzes the information received via the network interface unit notified from the digital communication network and the modem for communicating with another analog communication terminal connected to the public telephone network connected to the communication network. The network to which the communication partner is connected is a digital communication network, or a public telephone connected to the digital communication network A network type determining unit that determines whether the network is a network, and a connection switching unit that performs connection switching between a state of performing communication between analog communication terminals using a modem or a state of not using a modem according to a determination output of the network type determining unit. And the data input from the data input unit is sent to the connection switching unit, and the data from the connection switching unit is output to the outside from the data output unit.

(Operation) According to the present invention described above, it is automatically determined whether the network type to which the partner terminal is connected is a digital communication network or a public telephone network (non-ISDN network). Reduces the mental burden for network type determination received at the time of a call, and moreover, since the determination is made correctly, communication becomes accurate. Further, according to the present invention, a data input section and a data output section are added to the communication processing apparatus, and if there is a terminal apparatus for a digital communication network, communication is performed by connecting the terminal apparatus to the output section and the input section of the terminal apparatus. It is possible to obtain an advantage that it is not necessary to prepare a terminal device (non-ISDN terminal device) for a public telephone network.

(Example) Hereinafter, an example of the present invention is described using a drawing.

FIG. 1 is a block diagram showing the configuration of an ISDN communication processing apparatus according to an embodiment of the present invention. Reference numeral 11 denotes a network type determining unit that analyzes network information to determine a network type. The connection switching units 13 and 14 for switching are an input unit and an output unit, respectively, and the other reference numerals refer to the corresponding reference numerals described in the previous figures.

In this configuration, at the time of a call or an incoming call operation, the network interface unit 10 uses the progress identifier element specified in the INS network service and the transmission capability information element from the information signal notified from the ISDN network 1. Is notified to the network type determination unit 11.

The network type determination unit 11 analyzes the notified progress contents and the information transfer capability information according to the procedure of FIG.
The network type information is output to the connection switching unit 12.

The connection switching unit 12 switches the path inside the ISDN communication processing device 7 according to the network type information input from the network type determination unit 11, and if the network type information is a public telephone network, the non-ISDN terminal 5 is connected to the terminal interface unit 8 via the modem 6, and if the network type information is an ISDN network, the non-ISDN terminal 5 is directly connected to the terminal interface unit 8.

The data input unit 13 is for inputting data without using the external non-ISDN terminal 5.
Is transmitted from the connection switching unit 12 to the interface conversion unit 9, converted into the ISDN data format, and transmitted from the network interface unit 10 to the ISDN network 1.

The data output unit 14 is for outputting data without using an external non-ISDN terminal. Data received from the ISDN network 1 is input from the network interface unit 10 to the interface conversion unit 9 to perform data conversion. After that, the connection switching unit 12 notifies the data output unit 14.

FIG. 2 is a flowchart showing an outline of the processing of the network type determination unit 11. FIG. 2, steps (hereinafter abbreviated as S)
In step 1, first, the progress is determined based on the above-described INS network communication rules. It is determined whether the progress is a connection to a non-ISDN network (S1 / Y) or an ISDN end-to-end connection (S1 / N).

Non-ISDN when progress content judgment is "Yes (Y)" in S1
Next, since the connection with the network is established, the information transfer capability is determined. If the call is data communication (3.1 kHz audio) from the public telephone network (S2 · Y), network type information (public telephone network) Is notified to the connection switching unit 12 (S3).

If the information transfer capability is other than 3.1kHz audio (S2
N), consider that the call is not data communication, and determine the network type
11 does not output the network type information (S4).

If the progress content determination is “none” (S1 · N), the connection to the ISDN network is established.
Calling ISDN end-to-end data communication (unrestricted digital) (S5Y), network type information (ISDN network)
Is notified to the connection switching unit 12 (S6).

When the information transfer capability is other than unrestricted digital (S5
N), consider that the call is not a data communication, and
Does not output network type information (S7).

That is, the present invention is provided with a configuration for automatically determining the network type as described above.

(Effect of the Invention) As described above, the present invention analyzes the information notified from the ISDN network at the time of outgoing or incoming call, and
Judgment whether the connection to the ISDN network or to the public telephone network connected between the networks via a modem is made, and the communication means suitable for the network is automatically selected inside the device. This eliminates the need for the user to confirm the destination before performing communication. In addition, by adding a data input unit and a data output unit, non-IS
IS connected to ISDN network without connecting DN terminal device
This has the effect that it is possible to directly communicate with a DN terminal or a non-ISDN terminal connected via a modem to a public network connected to an ISDN network.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of an embodiment of the present invention, and FIG.
FIG. 11 is a flowchart of the network type determining unit according to the present invention,
FIG. 1 is an overall configuration diagram of the ISDN, and FIG. 4 is a functional block diagram in the related art. 1 ISDN network 2 Public telephone network 3 Network connection 4
... ISDN terminal, 5 ... non-ISDN terminal, 6 ... modem, 7 ...
... ISDN communication processing device, 8 ... terminal interface unit, 9
... Interface conversion unit, 10 network interface unit, 11 network type determination unit, 12 connection switching unit, 13 data input unit, 14 data output unit.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 11/00-11/10 G06F 13/00 354

Claims (1)

(57) [Claims] 1. A network interface unit for transmitting and receiving information signals to and from a digital communication network, a terminal interface unit for communicating with an analog communication terminal, a data input unit for inputting external data, and outputting data to the outside. A data output unit, an interface conversion unit for performing interface conversion between the network interface unit and the terminal interface unit, and another analog communication connected to a public telephone network connected to the digital communication network. A modem for communicating with a terminal and information received via the network interface unit notified from the digital communication network are analyzed, and a network to which a communication partner is connected is a digital communication network or a digital communication network. A network type determining unit that determines whether the network is a public telephone network connected to the network, Use dem communication processing apparatus characterized by comprising a connection switching unit for switching connection to the state of not using the state or the modem, communication between analog communication terminals.