JPS58191541A - Informing system of caller number for incoming call during absence - Google Patents

Abstract

PURPOSE:To decrease the incompleted call rate, by storing a caller number and a called party member as to the call given to a mobile body during the absence of a subscriber and informing the numbers to a mobile body subscriber. CONSTITUTION:When the absence of a mobile body subscriber is confirmed at the calling of a mobile telephone set 21, a common controller 2 of a mobile body exchange 23 stores the caller number to a storage device 5 corresponding to the subscriber number of the absent mobile body. Further, when the called mobile body subscriber restores to the state using the telephone set 21 and dials a specific number, a radio system signal device 7 of the exchange 23 is received via a ratio base station 22. Since the received calling information includes the caller mobile body subscriber number, the device 2 reads out the caller number of the incoming call during the absence and transmits the caller number from the device 7. This number passes through the base station 22, is received at a handset of the telephone set 21 and displayed on a numerical display 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calling party ID notification system when a called mobile subscriber is absent in a storage program controlled mobile telephone switching system.

In mobile telephone switching systems, mobile subscribers do not always have their mobile telephones available for use.
Mobile phones are often left unattended or turned off when they are away from a mobile object.

During this time, all calls made to these mobile units will be treated as incomplete calls.

In the present invention, when an incomplete call as described above occurs, the calling party's number is collected and stored in the exchange, and when the corresponding mobile subscriber dials a specific number and makes a call, the calling party's number is collected and stored in the exchange. The caller's number is sent back to the mobile device and displayed on the mobile phone's display or by voice, making it possible to call back the caller and increasing the completion rate of the system. Its purpose is to provide a caller ID notification method for calls.

For this purpose, the present invention provides, in a storage program control type mobile telephone switching system, an incoming call to a mobile unit while the subscriber is absent, before the incoming call is processed as an incomplete call. The fixed calling party number is collected and stored together with the called party number of the incoming call, and when the corresponding absent mobile subscriber dials a specific number and makes a call, the exchange receives the specific number. The stored corresponding calling party number is returned to the calling mobile unit in a signal format according to the type of dialed number, and the mobile telephone transmits the received calling party number by means according to the type of the dialed specific number. For example, the mobile subscriber is notified by means such as displaying on a dial numeric display board on the handset or by sending voice to the handset.

Next, the present invention will be described in detail with reference to the drawings.

When a call is made from a general telephone 20 to a mobile telephone 21, the human trunk 1 is intercepted, and the common control device 12, which operates under storage program control, sends the signaling device 3 through the switch network 4 in order to receive the dialed number. Connect to the person's trunk l.

At this time, the calling party number is requested following the called party number and is temporarily stored in a specific area of the storage device 5. Depending on the signaling method, the calling party number can be requested using an NFC backward signal, or by an existing method such as sending back a second dial tone etc. after receiving the called number and then dialing the calling party number. applies.

The common control device 2 then captures the radio channel control trunk 6, connects the radio system signaling device 7, and sends the called number to the transceiver 8 of the radio base station 22. The called number is broadcast from the antenna 9 and monitored by the transceiver 10 located at the JI control panel 251 of the mobile telephone 21. When the mobile telephone detects that the monitored called number is its own mobile telephone 41, it automatically returns a call reception confirmation signal. Exchange 2
When the third side receives the confirmation signal, it determines the base station closest to the mobile object, instructs a new radio channel with good conditions for a call, and prepares a corresponding radio channel control trunk 6'.

Next, after disconnecting the incoming trunk 1 and the signaling device W3, connecting the radio system signaling device 7 and the new radio channel control trunk 6', and sending a bell ringing command signal to the mobile telephone 21,
The wireless signaling device 7 and the control trunk 6' are separated, and the incoming trunk 1 and the control trunk 6 are connected to prepare a communication path.

On the other hand, when the mobile magnetic telephone receives the bell ringing command signal,
A bell is rung to notify the subscriber of the incoming call, and when the subscriber picks up the handset 24, a response signal is sent back to the exchange 23 and a call is made with the general subscriber. However, if the mobile phone happens to be powered off when the mobile phone calls, the call reception confirmation signal is not sent back to the exchange, and the exchange plays a tone or talkie to inform the caller that the call is not completed. Process calls. Also, even if the mobile subscriber rings, there will be no response if the mobile subscriber is absent, and the exchange will hold the wireless channel invalid for a certain period of time and process it as an incomplete call in the same way as above.

The vertical punch system completes call processing with the above processing steps, but
In the present invention, the following processing is added in order to rescue the above-mentioned incomplete call.

That is, when the absence of a mobile subscriber as described above is confirmed and an incomplete call is processed, the common control device 2 of the mobile exchange 23 associates the already collected calling party number with the absent mobile subscriber number. The information is stored in the storage device 5, and an indication bit indicating that there is an incoming call while absent is set in a specific position of the subscriber information memory prepared for each mobile subscriber. After that, when the absent called mobile subscriber returns to a state in which he can use the mobile telephone 21, when the mobile subscriber dials a specific number and makes a call, the specific dialed number and call information are transferred to the wireless base station. It passes through the station 22, the newly specified radio channel control trunk 61 of the exchange 23, and is received by the radio signaling device 7 via the switch network 4. The calling information received at this time always includes the calling mobile subscriber number for use in billing. The above is a normal mobile call origination procedure. When the common control device 2 collects the received dial number and mobile subscriber number, it reads the subscriber memory assigned to the calling subscriber, and When there is an indication that there is an unattended incoming call in a specific bit position, the separately stored calling party number of the unattended incoming call corresponding to the mobile number is read out, and
The particular dialed number received is analyzed to determine the calling number return signal format for the missed call. Next, the common control device 2 selects a signaling device according to the return signal format and connects it to the radio channel control trunk 6' via the switch network 4.

As an example, to explain the case where the return signal is used as data format and the returned number data is to be displayed on a numeric display on a mobile phone, the common control device 2 connects the radio signal device 7 to the radio channel control trunk 6''. and instructs the signaling device 7 to transmit the calling party number of the missed call read from the specific memory.The calling party number is transferred in data form through the base station transceiver 8. received by the telephone transceiver 10 and transmitted to the display control circuit 12;
The circuit 12 forwards the received data to the numeric display 13 on the handset, thereby informing the mobile subscriber of the calling party number of the missed call. The numeric display 13 is one that is generally provided for the purpose of displaying the digits dialed by a mobile subscriber when making a call. If, as another display format, the return information is to be edited into voice and notified to the mobile subscriber, the common control device 2 connects a specially provided voice editing device 11 to the radio channel control trunk 6' and stores it. The caller number information of the missed incoming call set in 7 is sent to the voice editing device p, t'i, and the device 11 edits the information into voice and sends it back to the mobile phone 21 via the base station. do. In the mobile telephone, the received voice is received by the transmitter/receiver 10 in the same way as the answering voice of a normal call, and the received voice is transmitted from the receiving circuit 15 on the handset via the communication path control circuit 14 to notify the mobile subscriber of an absent incoming call. The calling number will be notified.

As explained above, according to the present invention, even if the mobile subscriber is absent or carelessly turns off the power of the mobile phone,
If the mobile subscriber dials the special number again, he can manually enter the caller number of the incoming call during his absence.
If necessary, the mobile subscriber can call back the absent caller, reducing the rate of missed calls throughout the system operation period.

[Brief explanation of the drawing]

Figure 1 shows system relay method 1 showing an embodiment of the present invention.
person trunk, 2...common side a device, 3...signal device,
4... Switch network, 5... Storage device, 6
...Radio channel control trunk, 7...Radio system signal device, 8...Transmitter/receiver, 9...Antenna, 10...
Transmitter/receiver, 11... Audio editing device, 12... Display control circuit, 13... Numerical display, 14-
- Call path control circuit, 15... Receiving circuit, 20... General telephone, 21... Mobile telephone, 22... Wireless base station, 23... Mobile switching equipment. Agent Patent Attorney Toshi Somekawa Blind

Claims (1)

[Claims] If a mobile telephone switching system using a storage program control system fails and an incoming call occurs to a mobile unit where the subscriber is not present and the call is treated as an incomplete call, the mobile telephone switching system will issue the incoming call. The calling party number is collected and stored in a storage device along with the called party's number, and when the called party dials a specific number and makes a call, the switching equipment stores the number in a signal format according to the type of the specific dialed number. The received caller number is returned to the mobile unit, and the mobile unit displays the received caller number in a display method according to the type of the specific dial number. Person ID notification method.