JPH05236121A - User-user information transfer system - Google Patents

Abstract

PURPOSE:To transfer the user-user information of the ISDN service without deteriorating the call processing capability of a central processing control unit of a digital electronic exchange. CONSTITUTION:When a call setup message by a terminal equipment 11 includes user-user information(UUI), a call control message is separated from the UUI inside an interface device 2-1, the call control message is sent to a central processing control unit 5 and the UUI is sent to a UUI distributer 6 via a time division switch 3. At the time of receiving the call control message, the central processing control unit 5 receives also information representing the presence of the UUI and sends transfer destination information to the UUI distributer 6. The UUI distributer 6 sends the UUI sent through the time division switch 3 to an interface device 2-2 being a relevant transfer destination through the time division switch 3 again. The interface device 2-2 of the transfer destination links the call control message and the UUI and sends the result to a terminal equipment 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a user / user information transfer system, and more particularly to a user / user information transfer system for a digital electronic exchange having an ISDN function.

[0002]

2. Description of the Related Art Conventionally, in this type of user / user information transfer system, user / user information (hereinafter referred to as UUI) from a terminal accommodated in a digital electronic exchange and UUI from an ISDN network are all central to the digital electronic exchange. It is transferred via the processing control device.

UUI is classified into the following three types.

(1) User / user information exchanged in a call control message in the call setup and disconnection recovery phase.

(2) User / user information between a "call" message and a "answer" message during call setup, user / user information contained in and exchanged with the message.

(3) User-user information that is included and exchanged when the call is in the "busy" state.

[0007]

In this conventional user-user information transfer method, since all the UUIs are processed and transferred by the central processing control unit of the digital electronic exchange, the UUIs between the terminals or between the terminals and the ISDN network are processed. When the transfer amount increases, there is a possibility that the normal call processing control in the central processing control device may be affected, leading to a decrease in the call processing capacity of the entire system.

[0008]

According to the user-user information transfer method of the present invention, in a digital electronic exchange connected to an ISDN network, the interface is provided in a first interface device for interfacing with a plurality of ISDN terminals and to the ISDN network. User / user information detection / transmission means for detecting and transmitting user / user information on the D channel signal from the ISDN terminal and the ISDN network in the second interface device, and the user / user information is call control information. And user / user information separating / combining means for separating or combining the call control information and the user / user information, and user / user information separated from the call control information or a single user / user. Information is multiplexed on a plurality of lines accommodated in the first and second interface devices. And a first transmitting / receiving means for transmitting / receiving the multiplexed user / user information through a time division switch, the first user / user information distribution device being connected to the time division switch. ，
Second transmitting / receiving means for transmitting / receiving the user / user information through the second interface device and the time division switch, and the first or second interface according to a distribution destination instruction from a central processing control device in the digital electronic exchange. And sending means for sending said user-user information to the device.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a digital electronic exchange to which an embodiment of the present invention is applied.

In FIG. 1, a digital electronic exchange 10 of this application example has an interface device 2-1 for interfacing ISDN terminals (hereinafter, terminals) 1 and 11, and a terminal 1.
Interface device 2 for interfacing 2 and 22
2, an interface device 4 for interfacing with the ISDN network 9, and received user / user information (hereinafter referred to as UUI).
Is transmitted and received) and the interface devices 2-1 and 2-
2, a UUI distributor 6 for distributing signals, a time division switch 3 for connecting a call signal and UUI, and a central processing controller 5 for controlling the entire digital electronic exchange 10 of this application example. There is.

The UUI distribution device 6 has a plurality of interface circuits for interfacing with the time divisional switch 3, each of which is 64k through the interface devices 2-1 and 2-2, the interface device 4 and the time divisional switch 3.
It is assumed that the information transfer path of bps is fixedly connected.

Next, the transfer operation of the UUI according to the embodiment of the present invention in this application example will be described.

First, for example, when the terminal 11 makes a call and the UUI is included in the call setting message, the call control message and the UUI are separated inside the interface device 2-1, and the call control message is controlled by the central processing. Send to device 5 UU
I is sent to the UUI distributor 6 through the time division switch 3.

When the central processing control device 5 receives the call control message from the interface device 2-1, it also receives information on the presence / absence of UUI, and the transfer destination information is sent to the UUI distribution device 6
Send to. In the UUI distribution device 6, according to the UUI distribution destination information received from the central processing control device 5, the U sent from the interface device 2-1 through the time division switch 3 is sent.
The UI is sent again to the interface device 2-2 of the transfer destination through the time divisional switch 3.

In the transfer destination interface device 2-2, the incoming call control message sent from the central processing control device 5 and the UUI sent from the UUI distribution device 6 are combined and sent to the terminal 12.

The above is the case where UUI is included in the (1) call control message in the above-mentioned three categories of UUI. In the case of a single UUI that is not added to the call control messages of (2) and (3) of the three classifications, the central processing control device 5 causes the UUI distribution device 6 to notify the service request by the call setting message of the calling side. The transfer destination is notified, and the UUI distribution device 6 distributes the UUI accordingly. The interface devices 2-1 and 2-2 do not need message separation and combination processing.

The UUI that actually flows here is given the identification numbers of the lines accommodated in the interface devices 2-1 and 2-2.
The configuration is such that multiplex / separation within -2 is possible.

FIG. 2 is a functional block diagram showing the interface devices 2-1 and 2-2 in this application example, and FIG. 3 is a functional block diagram showing the UUI distribution device 6 in this application example.

Next, the interface devices 2-1 and 2-2 and the UUI distribution device 6 in this application example will be described with reference to FIGS. 1, 2 and 3.

In FIG. 2, the interface device 2-1 is provided.
2-2 is an extension ISDN layer 1 interface circuit 2
8, a D channel signal processing circuit 23, a time divisional switch interface circuit 24, a central processing controller interface circuit 25, a UUI transmitting / receiving circuit 26, and a control circuit 27.

D channel signals from the terminals 1, 11, 12, and 22 are processed by the D channel signal processing circuit 23 and analyzed as message information by the control circuit 27, and UUI is added to the above-mentioned call control message. If so, separate,
The call control message passes through the central processing control unit interface circuit 25 to the central processing control unit 5, and UUI is U
It is sent to the UUI distribution device 6 via the UI transmission / reception circuit 26 and the time divisional switch interface circuit 24.

The flow of information is the same in the opposite direction.

In FIG. 3, the UUI distributor 6 comprises a time division switch interface circuit 61, a central processing controller interface circuit 63, a UUI transmitting / receiving circuit 62 and a control circuit 64.

The operation of the UUI distribution device 6 is only to transfer the UUI sent thereto to the corresponding route according to the distribution destination instruction from the central processing control device 5. However, at this time, the line identification number in the interface device of the other party must be changed by the information sent from the central processing control device 5.

[0026]

As described above, according to the present invention, the user
By adopting a method of transferring the user information from the user / user information distribution device through a time-division switch instead of transferring it through the central processing control device of the digital electronic exchange, the addition of the central processing control device becomes lighter and This has the effect that the user-user information transfer service can be implemented without burdening the processing capacity.

[Brief description of drawings]

FIG. 1 is a block diagram of a digital electronic exchange to which an embodiment of the present invention is applied.

FIG. 2 is a functional block diagram of an interface device for an ISDN terminal in this application example.

FIG. 3 is a functional block diagram of a user / user information distribution device in the present application example.

[Explanation of symbols]

 1, 11, 12, 22 ISDN terminal (terminal) 2-1, 2-2 Interface device 3 Time division switch 4 Interface device 5 Central processing control device 6 User / user information (UUI) distribution device 9 ISDN network 10 Digital electronic exchange 23 D channel signal processing circuit 24, 61 Time division switch interface circuit 25, 63 Central processing controller interface circuit 26, 62 UUI transmitting / receiving circuit 27, 64 Control circuit 28 ISDN layer 1 interface circuit

Claims (1)

[Claims] 1. In a digital electronic exchange connected to an ISDN network, the I is provided in a first interface device that interfaces with a plurality of ISDN terminals and in a second interface device that interfaces with the ISDN network.
User / user information detection / transmission means for detecting and transmitting user / user information on the D channel signal from the SDN terminal and the ISDN network, and the call when the user / user information is added to the call control information. User / user information separating / combining means for separating or combining control information and the user / user information, and the first and second user / user information separated from the call control information or single user / user information. And a first transmitting / receiving means for transmitting / receiving the multiplexed user / user information through a time division switch. In the user / user information distribution device connected to the switch, the user / user information is passed through the first and second interface devices and the time division switch. A second transmitting / receiving means for transmitting / receiving information, and a transmitting means for transmitting the user / user information to the first or second interface device according to a distribution destination instruction from a central processing control device in the digital electronic exchange. A user-user information transfer method characterized by: