JPH1098558A - ISDN terminal adapter device - Google Patents

Abstract

(57) [Summary] A setup message transmitted when switching connection between a telephone and a facsimile device or using the handset connected to the facsimile device as a telephone function in an ISDN terminal adapter device. Solves the interoperability problem because information such as BC / HLC differs from the user's request. SOLUTION: In a terminal adapter device having an S / T point interface including a call control unit for connecting to an ISDN network and an R point interface for connecting a non-ISDN terminal, the R point interface is:
The call control unit notifies a DTMF or DP detection unit for recognizing a called number and a unit for notifying the information to a call control unit of an S / T point interface when a preset prefix is detected. Means for generating a setup message based on the received information are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN terminal adapter device for connecting a non-ISDN terminal to an ISDN network, and more particularly to a call control function of the ISDN terminal adapter device and a PBX for accommodating an ISDN network on an outside line. It relates to a call control function.

[0002]

2. Description of the Related Art Conventionally, in a PBX in which an ISDN network is accommodated in an outside line, BC / HLC can be set for each extension. Further, in the case of an ISDN terminal adapter device or the like, when a facsimile device is called at the time of an incoming call, a device that does not ring at 1.6 kHz is commercially available.
Thus, an ISDN terminal adapter device for connecting a non-ISDN terminal to an ISDN network is known. Further, for example, there is known an ISDN terminal adapter device provided with a control signal output unit for setting a transmission speed of an image transmission device which is a terminal according to a transmission mode at the time of calling (Japanese Utility Model Laid-Open No. 4-78845). ).

Further, in order to prevent a long file transfer even when a large-capacity file transfer is performed, an out-band control unit (Dch control unit) determines whether the sub-address of information is normal data communication or file transfer at the time of an incoming call. In the case of normal data communication, the S / T switching unit is connected to the terminal adapter unit, and in the case of file transfer, FDD is used.
There is known an ISDN terminal adapter device to be connected to a unit (Japanese Utility Model Laid-Open No. 5-97160). Similarly,
DC is superimposed on the connection with the G3 facsimile machine,
By detecting the hook-up state of the 3 facsimile machine, receiving the dial pulse or DTMF signal to be transmitted, and converting the dial pulse or the DTMF signal into a calling procedure for the ISDN network,
An ISDN terminal adapter device that can be connected to an ISDN network without having to modify the device (Japanese Unexamined Patent Publication No.
No. 3-286050) or a procedure signal from a G3 facsimile and an image signal are converted into a digital signal, and the
By converting the G3 facsimile procedure signal and image signal transmitted and received through the N network into analog signals,
There is also known an ISDN terminal adapter device (Japanese Patent Application Laid-Open No. 63-283351) that enables mutual communication without having to modify a G3 facsimile device.

When an analog terminal is used in an ISDN network via an ISDN terminal adapter device, information such as BC / HLC added to a setup (SETUP) message at the time of calling is generated by the ISDN terminal adapter device. . At this time, ISD
The information types that can be added in the N terminal adapter device are only information set in advance for each port,
It simply adds that information as needed. But,
In such a conventional method, for example, when the connection between the telephone and the facsimile machine is switched, or when a handset connected to the facsimile machine is used as a telephone function, the BC of the setup message transmitted is
In some cases, the information such as / HLC differs from the user's request, which hinders the interconnectivity. And
In order to avoid such inconvenience, the IS
There is no countermeasure other than changing the setting of the DN terminal adapter device or transmitting only a minimum information element such as BC = “3.1 kHz Audio” / No HLC from the beginning (first prior art). Problem).

When an analog terminal is used in an ISDN network via an ISDN terminal adapter device,
Information elements such as UUI and sub-address that can be added to the setup message when making a call are usually ISDN
Since the addition is performed by operating the terminal adapter device, the addition cannot be performed by instructing from the analog terminal (the second problem of the prior art). Further, when using an analog terminal connected to ISDN via an ISDN terminal adapter device, information elements such as BC / HLC added to a setup message at the time of an incoming call are processed by the ISDN terminal adapter device, and the analog port is processed. Is not notified to the terminal connected to the R point interface (third problem of the prior art).

[0006]

As described in the prior art, in an ISDN terminal adapter device for connecting a non-ISDN terminal to an ISDN network, a connection between a telephone and a facsimile device is switched or a facsimile device is connected. When using the connected handset as a telephone function, there is a case where the information such as BC / HLC of the transmitted setup message is different from the user's request, so that the interoperability is hindered. And in order to avoid such inconvenience,
Each time, the setting of the ISDN terminal adapter device is changed, or BC = “3.1 kHz Audio” from the beginning.
There was no countermeasure other than transmitting only minimal information elements such as "o" / no HLC (first problem of the prior art). However, the operation of resetting the settings of the ISDN terminal adapter device every time communication is performed is very troublesome. Also, minimizing the information elements is not preferable because it adversely affects the interoperability of the ISDN terminals. An object of the present invention is to enable accurate information elements to be transmitted to ISDN by a simple operation (the invention of claim 1).

Similarly, when an analog terminal is used in an ISDN network via an ISDN terminal adapter device, information elements such as a UUI and a sub-address which can be added to a setup message at the time of a call are usually IS
Since the addition is performed by operating the DN terminal adapter device, the addition cannot be performed by instructing from the analog terminal (the second problem of the prior art). for that reason,
When using an analog terminal via an ISDN terminal adapter device while using ISDN,
The service of ISDN cannot be used efficiently. In this invention, with a simple operation from the analog terminal,
It is an object of the present invention to make it possible to use such ISDN services.

Finally, when an analog terminal connected to an ISDN network is used via an ISDN terminal adapter device, information elements such as BC / HLC added to a setup message at the time of an incoming call are transmitted by the ISDN terminal adapter device. It is processed and is not notified to the terminal connected to the R point interface such as an analog port (third problem of the prior art). As a result, for example, even if there is an incoming call as a telephone, there is a problem that the G3 facsimile machine responds and the ISDN service cannot be fully utilized. SUMMARY OF THE INVENTION It is an object of the present invention to enable terminal attribute information added to a setup message received by an ISDN terminal adapter device to be notified to a terminal connected to an R-point interface such as an analog port. 3 invention).

[0009]

According to the first aspect of the present invention, the I
In a terminal adapter device having an S / T point interface including a call control unit for connecting to an SDN network and an R point interface such as an analog port for connecting a non-ISDN terminal, the R point interface such as an analog port is , DTM for recognizing called numbers, etc.
F or DP detecting means, and means for notifying the information to the call control unit of the S / T point interface when detecting a preset prefix, and the call control unit performs the processing based on the notified information. This is a configuration having means for generating a setup message.

According to the second aspect of the present invention, the ISDN of the first aspect is provided.
In the terminal adapter device, an R point interface such as an analog port detects a DTMF or DP for recognizing a called number and the like, and when a preset prefix is detected, the information is transmitted to the S / T point interface for call control. Means for notifying the setup message based on the notified information, and the call control unit generating means by adding an information element such as a UUI and a subaddress to the setup message.

According to the third aspect of the present invention, there is provided the ISDN of the first aspect.
In a terminal adapter device, an R-point interface such as an analog port is provided with a ringing frequency control for controlling a ringing frequency to a ringer unit to ring a terminal connected to the R-point interface such as an analog port when an incoming call is detected. Means are provided to vary the ringing frequency based on the terminal attribute of the incoming call notified from the call control unit of the S / T point interface.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an ISDN terminal adapter device of the present invention will be described in detail with reference to the drawings. Since the hardware configuration of the ISDN terminal adapter device of the present invention is common to the first to third embodiments, first, the overall configuration of the ISDN terminal adapter device will be described.

FIG. 1 is a functional block diagram showing an example of an embodiment of a main part configuration of an ISDN terminal adapter device of the present invention. In the figure, 1 is a main control unit, 2 is an operation unit, 3 is a display unit, 4 is a storage unit, 5 is an out-band control unit, 6 is a CODEC, 7 is an analog port control unit, 8 is a layer 1 control unit, 9 Indicates an analog I / F circuit.

The ISDN terminal adapter device shown in FIG. 1 has basically the same configuration as that of the conventional device except that the main control unit 1 performs control according to the flow shown in FIGS. 2 and 3 described later. It is. First, the configuration and operation common to those of the related art will be briefly described. The main control unit 1 has a function of controlling the overall operation of the terminal. The operation unit 2 has a function of performing a desired operation in response to a user's access. The display unit 3 is a display unit that displays an operation state and various information. The storage unit 4 is a memory unit that previously stores data of a setup (SETUP) corresponding to the input prefix. Out-band control unit (Dc
h control unit) 5 has a function of controlling ISDN call control.

The CODEC 6 converts an analog signal into an ISDN signal.
It has a function of performing A / D conversion, D / A conversion, and the like for communication via a network. The analog port control unit 7 has a function of generating a ringing signal for the analog port and detecting input dial information and the like. The layer 1 control unit 8 has a function of controlling ISDN layer 1. The analog I / F (interface) circuit 9 is an interface that exchanges various information with the analog terminal connected to the ISDN terminal adapter device. The above is the outline of the configuration and operation common to those of the related art.

First Embodiment This first embodiment corresponds to the first aspect of the present invention. In the first embodiment, when a call is made from an analog terminal connected to ISDN via an ISDN terminal adapter device, a terminal attribute is designated by a predetermined prefix, so that a call can be made from a non-ISDN terminal. B could not be specified
The feature is that the C / HLC information can be specified for each call, and the interoperability with the ISDN terminal can be improved.

When detecting the off-hook of the analog terminal connected to the analog I / F (interface) circuit 9, the analog port control unit 7 shown in FIG. 1 sends out a dial tone to urge the user to input a dial. . Further, upon detecting a preset prefix, the analog port control unit 7 notifies the main control unit 1 of the prefix. The main control unit 1 searches for setup (SETUP) information corresponding to the input prefix, that is, setup information (information such as BC / HLC) stored in the storage unit 4 in advance, and reads out the corresponding data. . Then, the main control unit 1 instructs the out-band control unit (Dch control unit) 5 to map the corresponding data to the setup.

The display section 3 displays the setup information mapped sequentially. Analog port controller 7
Continues to detect the dial information thereafter, and notifies the main control unit 1 every time the dial information is detected. Therefore, when the detection of the dial information is completed, the called number of the setup is mapped. The out-band control unit 5 sends out the setup information (called number) thus obtained to the ISDN via the layer 1 control unit 8. The above operation is shown in the flow.

FIG. 2 is a flowchart showing the flow of main processing at the time of call control according to the first embodiment, for the ISDN terminal adapter device of the present invention. In the figure, # 1 to # 8 indicate steps.

In step # 1, it is monitored whether the hook is off-hook. If it is off-hook, a dial tone is transmitted in step # 2. In the next step # 3, it is checked whether a prefix has been detected. If no prefix is detected, the process returns to step # 2, and the same processing is performed. If the prefix is detected as a result of the check in step # 3, the process proceeds to step # 3.
Proceed to 4.

In step # 4, the relevant data is searched, and the process proceeds to step # 5, where the data is mapped to the setup. In the next step # 6, it is checked whether or not dial input has been completed. When the dialing is completed, a destination number mapping is generated in step # 7. Next step #
At step 8, the generated setup message is transmitted, and the flow of FIG. 2 ends.

Second Embodiment This second embodiment corresponds to the second aspect of the present invention. In the first embodiment, when a call is made from an analog terminal connected to an ISDN network via an ISDN terminal adapter device, a terminal attribute is specified by a predetermined prefix, and otherwise, a non- A case has been described in which BC / HLC information, which could not be specified from the ISDN terminal, can be specified for each call to improve the interoperability with the ISDN terminal. In the second embodiment, when a call is made from an analog terminal connected to the ISDN network via the same ISDN terminal adapter device, the terminal attribute is specified by a predetermined prefix, and otherwise, the non- The feature is that information such as UUI / subaddress that could not be specified from the ISDN terminal can be specified for each call. Simple operation from the analog terminal enables ISDN service. Are made more readily available. In particular, since the sub-address can be specified, I
The interoperability with the SDN terminal is improved.

The hardware configuration is the same as that of the facsimile apparatus shown in FIG. When detecting the off-hook of the analog terminal connected to the analog I / F (interface) circuit 9, the analog port control unit 7 sends out a dial tone to prompt the user to input a dial. Further, upon detecting a preset prefix, the analog port control unit 7 notifies the main control unit 1 of the prefix. The main control unit 1 searches for setup (SETUP) information corresponding to the input prefix, that is, setup information (information such as UUI / sub-address) stored in the storage unit 4 in advance, and reads out corresponding data. . Then, the main control unit 1 instructs the out-band control unit (Dch control unit) 5 to map the corresponding data to the setup. The display unit 3 displays the setup information mapped sequentially. The analog port control unit 7 continues to detect the dial information thereafter, and notifies the main control unit 1 every time the dial information is detected. Therefore, when the detection of the dial information is completed, the called number of the setup is mapped.

The out-band control unit 5 sends out the setup information (called number) thus obtained to the ISDN via the layer 1 control unit 8. The flow is also the same as in FIG. According to the above operation, according to the second embodiment, it is possible to specify information such as a UUI / sub address which cannot be specified from a non-ISDN terminal for each call, The service of ISDN can be used more easily. Especially,
By enabling the specification of sub-address, ISD
Interoperability with N terminals is improved.

Third Embodiment The third embodiment corresponds to the third aspect of the present invention. In the third embodiment, for example, at the time of an incoming call, if the HLC added to the setup is "telephone", the ringing frequency is set to a frequency at which a terminal such as a facsimile apparatus cannot automatically answer, and the telephone rings. The feature of this is that it is possible to limit the response of terminals such as facsimile machines to the obvious "incoming call to telephone", thereby improving the interoperability with ISDN terminals. Is done.

The hardware configuration is the same as that of the facsimile apparatus shown in FIG. When the out-band control unit 5 receives the setup (SETUP) and detects the incoming call, first,
The “BC” (and HLC) of the setup information is checked, and the result is notified to the analog port control unit 7. In the analog port control unit 7, "BC" gives a speech (& HLC = T
In the case of EL, the frequency is set to X Hz (X is a frequency at which the facsimile does not respond). Also, “BC” is changed to “3.1k
In the case of "Hz Audio"(& HLC = G2 / G3 facsimile machine), a ringing signal is generated at a normal 16 Hz. In the case of other "BC", it is determined that there is no interconnectivity with the analog terminal, and this incoming call is ignored. The above operation is shown in the flow.

FIG. 3 is a flow chart showing the flow of main processing at the time of incoming call according to the third embodiment of the ISDN terminal adapter device of the present invention. In the figure, # 11 to # 14 indicate steps.

In step # 11, it is checked whether an incoming call has been detected. If an incoming call is detected, step # 1
In 2, the BC is a speech or “3.1 of the speech”
kHz Audio ”or“ 3.1 kHz Au ”.
"dio". If the BC is a speech, it is sounded at XHz (X is a frequency at which the facsimile machine does not respond) in step # 13, and the flow of FIG. 3 ends. In addition, BC made the speech "3.1 kHz"
If it is other than "Audio", the flow of FIG. 3 ends. If BC is "3.1 kHz Audio", in step # 14, sound is made at 16 Hz, and the flow of FIG. 3 ends.

As described above, in the third embodiment, for example, at the time of an incoming call, H
If the LC is "telephone", the ringing frequency is set to a frequency at which a terminal such as a facsimile apparatus cannot automatically answer, and the telephone is ringed. It is possible to limit the response of the terminal. That is, in the conventional technique, when an analog terminal connected to an ISDN network via an ISDN terminal adapter device is used,
BC / H added to setup message at the time of incoming call
Information elements such as LC are processed by the ISDN terminal adapter device and are not notified to a terminal connected to the R point interface such as an analog port. For example, even if there is an incoming call as a telephone, the G3 facsimile apparatus responds. As a result, the services of ISDN could not be fully utilized. However, according to the third embodiment, the IS
The terminal attribute information added to the setup message received by the DN terminal adapter device can be notified to a terminal connected to the R point interface such as an analog port.

[0030]

According to the ISDN terminal adapter device of the first aspect, the ISD terminal adapter device is connected via the terminal adapter device.
When a call is made from an analog terminal connected to the N network, a terminal attribute is specified by a preset prefix. Therefore, originally non-ISD
BC / HLC that could not be specified from N terminal
Information can be specified for each call, and ISDN
Interoperability with a terminal can be improved.

[0031] In the ISDN terminal adapter device of the second aspect, the ISDN terminal adapter device is connected via the terminal adapter device.
When a call is made from an analog terminal connected to a network, a terminal attribute is designated by a preset prefix. Therefore, originally non-ISDN
Information such as UUI / sub address that could not be specified from the terminal can be specified for each call,
The service of ISDN can be used more easily. In particular, since the subaddress can be specified, the interoperability with the ISDN terminal can be improved.

In the ISDN terminal adapter according to the third aspect, for example, when the HLC added to the setup at the time of receiving a call is a "telephone", the ringing frequency is set to a frequency at which a terminal such as a facsimile apparatus cannot automatically answer. The phone rings. Therefore, it is possible to limit the response of a terminal such as a facsimile machine to an apparent “incoming call to the telephone”,
Interoperability with ISDN terminals can be improved.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing an example of an embodiment of a main part configuration of an ISDN terminal adapter device of the present invention.

FIG. 2 is a flowchart showing a flow of main processing at the time of call control according to the first embodiment for the ISDN terminal adapter device of the present invention.

FIG. 3 is a flowchart showing a flow of main processing at the time of receiving a call according to a third embodiment of the ISDN terminal adapter device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main control part 2 Operation part 3 Display part 4 Storage part 5 Outband control part 6 CODEC 7 Analog port control part 8 Layer 1 control part 9 Analog I / F circuit

Claims (3)

[Claims] 1. A terminal adapter device having an S / T point interface including a call control unit for connecting to an ISDN network and an R point interface such as an analog port for connecting a non-ISDN terminal. The R point interface includes: DTMF or DP detecting means for recognizing a called number, etc .; and, when a preset prefix is detected, means for notifying the information to the call control unit of the S / T point interface. The call control unit comprises means for generating a setup message based on the notified information.
DN terminal adapter device. 2. A terminal adapter device having an S / T point interface including a call control unit for connecting to an ISDN network and an R point interface such as an analog port for connecting a non-ISDN terminal. The R point interface includes: DTMF or DP detecting means for recognizing a called number, etc .; and, when a preset prefix is detected, means for notifying the information to the call control unit of the S / T point interface. The ISDN terminal adapter device, wherein the call control unit includes means for adding an information element such as a UUI and a subaddress to the setup message based on the notified information to generate the setup message. 3. A terminal adapter device having an S / T point interface including a call control unit for connecting to an ISDN network and an R point interface such as an analog port for connecting a non-ISDN terminal. The R-point interface includes a ringing frequency control means for controlling a ringing frequency in a ringer unit to ring a terminal connected to the R-point interface such as the analog port when an incoming call is detected. An ISDN terminal adapter device characterized by varying a ringing frequency based on a terminal attribute of an incoming call notified from a call control unit of a T point interface.