JPH02217062A - Automatic transfer system for incoming message - Google Patents

Abstract

PURPOSE:To extremely shorten a transfer time and to reduce communication cost by including an incoming message in inter-user information to be transmitted together with a call control message for call setting and sending the combined message to a transmission destination through the D channel of an ISDN network. CONSTITUTION:The incoming message is included in the inter-user information to be transmitted from a telephone set receiving an incoming call to the transferred telephone set by means of the inter-user information to be transmitted together with the call control message to be transmitted at the time of setting up a call or releasing it between both the telephone sets connected to the ISDN network. Thereby, the incoming message can be instantaneously transferred from the incoming telephone set to the transferred telephone set at the time of controlling call setting to the ISDN network between both the telephone sets.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention utilizes the inter-user information transmission function of telephone devices connected to an ISDN network to transmit an incoming message to one telephone device to another telephone device. Conventionally, methods for forwarding incoming messages to one telephone device to another telephone device include a method using a so-called forwarding telephone device or an automatic facsimile forwarding method. Methods etc. are known.

In both of these methods, the device that receives the call automatically dials the forwarding destination's phone number, establishes a communication path between the caller's device and the forwarding destination, and then sends the message from the caller to the forwarding destination. It is designed to allow incoming calls.

(Problems to be Solved by the Invention) In all of the above conventional systems, the telephone device is connected to an analog network, so it takes a long time to transfer messages, and two telephone lines are required. There is a problem that communication costs increase.

In addition, in telephone equipment that serves as a relay device for messages,
There is a problem in that it takes a long time to automatically dial the transfer destination after receiving a call and to establish a communication path between the transfer destination and the telephone device, resulting in a long transfer time.

The present invention has been proposed to solve the above-mentioned problems, and an object of the present invention is to provide an automatic forwarding system for incoming messages that has extremely fast forwarding time and low communication costs.

[Means to solve the problem]

In recent years, the digitalization of telephone line networks has been put into practical use, and the so-called 1I
The SDN network has been constructed.

The present invention solves the above problems by using this ISDN network, and provides call control messages that are transmitted between telephone devices connected to the ISDN network when a call is set up or released. In this system, the incoming message is included in the user-to-user information that is sent from the telephone device that received the call to the forwarding destination telephone device, using the user-to-user information that can be transmitted along with the call.

[For production]

The incoming message is transferred from the telephone device that received the call to the forwarding destination instantly when the telephone device controls the call setting to the 1ISDN network, so the transfer time is extremely short and the communication cost is extremely low. becomes.

〔Example〕

Each of the drawings explains the present invention in detail, and FIG. 1 is a block diagram of a telephone device, and FIG. 2 shows a sequence of information exchange between an ISDN network and a telephone device, and a processing flow in the telephone device. FIG. 3 is a block diagram of the message save memory.

Each part of the telephone device shown in FIG. 1 will be explained.

1 is an S interface that is a connection device with the 1ISDN network, and separates information transmitted from the 1ISDN network on its B channel and D channel, or
It operates so that the information to be transmitted to the network is applied to the B channel or the D channel depending on the type of information.

Reference numeral 2 denotes a central control unit (hereinafter referred to as CPU) which collectively controls the telephone device including automatic transfer control of incoming messages, and is usually constructed mainly of a microprocessor.

Reference numeral 3 is a communication circuit network, and 4 is a handset and receiver, which are provided for use in voice communication, and are not directly related to the present invention.

Reference numeral 5 indicates a mode setting operation section for setting the operation mode of the telephone device including the automatic transfer mode according to the present invention, 6 indicates a message display section for visually displaying incoming messages, etc., and 7 indicates a forwarding destination telephone. A forwarding destination registration memory is used to register numbers, a message memory 8 is used to store incoming messages, and a dial 9 is used to enter the forwarding destination number manually when registering the forwarding destination number.

As shown in FIG. 3, the message save memory 8 is configured to store and save a plurality of messages, with storage areas Ml, M2 . . . . are each provided with an area for storing the date and time of incoming call, caller ID (caller ID), and message content.

Next, the operation will be explained with reference to FIG.

As shown in Figure 2, the ISDN network has terminal A, terminal B
Terminal A, terminal B, and terminal C are each a telephone device shown in FIG. 1, terminal A is a calling terminal, terminal B is a call transfer terminal, and terminal C is a transferee terminal. shall be. That is, a message sent from terminal A to terminal B will be transferred from terminal B to terminal C.

When automatically forwarding an incoming message, terminal B registers the forwarding destination telephone number and sets the automatic forwarding mode. That is, in FIG. 1, first operate the mode setting operation section 5 to set the transfer destination registration mode, then turn the dial 9.
If you enter the phone number of terminal C, which will be the forwarding destination,
The telephone number is stored in the transfer destination registration memory 7 under the control of the CPU 2. Next, the automatic transfer mode is set by operating the mode setting operation section 5 again.

When terminal A sends a message to terminal B, terminal A
A call control message (call setup message) for call setup is sent to the 1ISDN network from 1ISDN via the D channel, and the 1ISDN network receives this and performs control for call setup between terminal A and terminal B. At the same time, a call control message (call setup acceptance message) for confirming that the call has been accepted is sent to terminal A, and the same call setup message as above is sent to terminal B via the D channel. As described above, when a call is set up, there is a call control message that is sent from calling terminal A to called terminal B via the D channel, and it is generally said that call control messages can include user-to-user information. Therefore, the above terminal A
The message from Terminal B is sent to terminal B along with the call setup message using the user-to-user information.

As described above, when user-to-user information including messages is sent from the 1ISDN network via its D channel, at terminal B on the receiving side, the above-mentioned user-to-user information is read into the CPU 2 via the S interface 1, and the CPU 2 determines whether the incoming call is a message incoming call. If the incoming call is a general incoming call, the CPU 2 performs general incoming call processing;
That is, the process for making a voice call with the calling terminal via the B channel (this process is not directly related to the present invention and will not be described in detail) is performed, but in this case, since a message has been received, the CPU 2 A process (incoming message receiving process) for storing a message sent based on the above-mentioned user-to-user information in the message memory 8 is performed.

As shown in FIG. 3, the message save memory 8 has an incoming date and time area, a caller ID area, and a message content area for each message storage area.
(Caller number, in this case, the telephone number of terminal A, this caller ID is sent to terminal B in a call setup message.) Along with the number, the number is stored in the 1 message storage area M1 in the order of incoming calls. .

When the message sent from terminal A is stored in the message storage area M1 of the message save memory 8, for example, No. 1 message as described above, the CPU 2 then checks whether or not it is in the absentee mode, and if it is not in the absentee mode. performs line release control and sends a call control message (release completion message) indicating release completion to the ISDN network via the S interface 1, displays the incoming message on the message display section 6, and completes the series of controls. However, in this case, since terminal B is in absentee mode (automatic transfer mode is also absentee mode), CPU 2 performs the same line release control as above, and then determines whether it is in transfer mode or not. .

When the ISDN network receives the above-mentioned release completion message from terminal B, it sends and receives three types of call control messages, ie, a disconnection message, a release message, and a release completion message, to and from terminal A via the D channel. Release the connection with terminal B. Line release processing in this network hierarchy is normal processing in ISDN networks.

In determining whether or not the transfer mode is set, if the CPU 2 is not in the transfer mode, the CPU 2 performs other processing such as sending an absentee notification message, but in this case, since terminal B is in the transfer mode, Reads the telephone number of the forwarding destination terminal (transferred terminal) C from the forwarding destination registration memory 7,
The incoming message is read from the N011 message storage area M1 of the message save memory 8, a call setting message including the above-mentioned telephone number and user information including the above-mentioned incoming message are created, and the above-mentioned call is sent via the S interface 1. Setting messages and inter-user information are sent to the 1ISDN network via the D channel.

1 The ISDN network performs call setup with terminal C based on the telephone number information included in the call setup message from terminal B, and also uses the same control as when setting up a call between terminal A and terminal B. The call setup message and user information from the terminal B are sent to the terminal C, and the CPU 2 of the terminal C receives them via the S interface 1, and displays the message in the same manner as the incoming message display control in the terminal B. The incoming message included in the user-to-user information is displayed in section 8.

Along with displaying this incoming message, terminal C and ID
Line release control with the network is performed, which is the same as the line release control between terminal A and terminal B.

In the above operation, terminal A, terminal B, terminal C and I
With respect to the SDN network, only line control is performed for the D channel, and no line control is performed for the B channel.

〔Effect of the invention〕

As explained above, the present invention includes an incoming message in inter-user information that can be transmitted together with a call control message for call setup via the D channel of an ISDN network, and sends the message to a registered forwarding destination. and
According to the present invention, the transfer of an incoming message is instantaneously performed at the call setup control stage to the transfer destination, so the transfer time is extremely fast.
Since only the channel is set and the B channel is not set, the effect is that the communication cost is extremely low.

[Brief explanation of the drawing]

The drawings all explain the present invention in detail, and FIG. 1 is a block diagram of the telephone device, FIG. 2 is an operational diagram, and FIG. 3 is a block diagram of the message save memory. (Main symbols) 2... CPU 5... Mode setting operation section 6... Message display section 7... Transfer destination registration memory 8... Message save memory 5 Other 4 people σ message request method)

Claims (1)

[Scope of Claims] 1. In a telephone device connected to an ISDN network, the telephone device has a storage means for storing a textual message sent from the other party, and a storage means for storing the message stored in the storage means. Read out I
The mode setting means includes a transmission means for transmitting data to an SDN network, a mode setting means for setting the telephone device to an automatic forwarding mode for incoming messages, and a forwarding destination number registration means for registering a forwarding destination telephone number. When a message is received on a telephone device which is set to automatic forwarding mode and whose forwarding destination is registered in the forwarding destination number registration means, the telephone device stores the incoming message in the storage means and transfers the incoming message to the forwarding destination registered in the forwarding destination number registration means. It is possible to send a call control message for call setup to the transferred destination on the D channel of the ISDN network, read the incoming call message stored in the storage means, and transmit it to the ISDN network together with the call control message. An automatic forwarding method for incoming messages in which the incoming message is included in the user-to-user information and sent to the forwarding destination.