JPS5841025B2 - Automatic call forwarding method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic call transfer system for a crossbar automatic telephone exchange.

There have been some proposals for automatic call forwarding systems for crossbar automatic telephone exchanges, but they have been disadvantageous in terms of economy because they require the installation of many new devices dedicated to call forwarding.

The purpose of the present invention is to minimize the need for dedicated equipment for call forwarding, which was required in the conventional system, and to maximize the use of existing equipment.
It provides an economical automatic call forwarding method.

In order to achieve the above object, the present invention first uses a part of the storage unit used for the speed dial service as a storage unit for forwarding destination telephone numbers for the out-of-office notification service to register the start and stop of call forwarding. Uses memory during service.

Second, the service register and marker and forwarding destination phone number storage unit that receives the dial information of the call forwarding service requesting telephone used when registering the start or stop of call forwarding, and rewrites and writes the memory state during the service. A control unit will be provided to mediate the exchange of information with the

Thirdly, the transfer destination telephone number is registered using the same dialing specifications as the conventional speed dial service.

Fourth, to register the start and stop of the call forwarding service, the special number dial is connected to the service register, and when the start and stop dial information is sent to the service register, the service register writes or writes the memory state of the memory during the service depending on the dial state. When a registered telephone receives an incoming call, the number group returns the location information of the incoming telephone to the marker during the incoming call connection operation, and the number group starts the call forwarding service from the in-service memory. We will also send back information indicating that it has been registered.

Fifthly, the marker activates the control section based on the information and sends out the housing location information of the incoming telephone.Sixthly, the control section uses the housing location information to read out the forwarding destination telephone number from the forwarding destination telephone number storage section. , the information is transferred to the storage section, and the telephone number information of the forwarding destination telephone returned from the storage section is transferred to the marker.

Seventh, when the marker receives the forwarding destination telephone number information, it activates the number group again, obtains the accommodation location information of the telephone number of the forwarding destination telephone, and connects the incoming call and the forwarding destination telephone.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram of a comprehensive relay system according to an embodiment of the present invention.

In the figure, 5UBA1STJBB is a telephone, 5UBA is a telephone registered with a call forwarding service, and 5UBB is a forwarding destination telephone of 5UBA.

Double-framed SPR and C0NT indicate a service register and control unit newly established for the call transfer service.

CM is a marker, NG is a number group, and OR is a transmission register, which indicates conventional equipment.

CRlDTE, DTT, and storage are existing equipment for speed dial service, CR is a service register, DTE is an information transfer device, storage is a storage unit for speed dial service, and MES-R, M-CONT, and USM are existing equipment for speed dial service. In the absence guidance service equipment, MES-R indicates an absence guidance service register, M-CONT a memory controller, and USM a memory in service.

Others ORMC, CRC. DTC etc. indicate connectors that connect both devices.

As is clear from the diagram, the device dedicated to call forwarding service is SP.
It is composed of two points, R and C0NT.

The automatic call forwarding service operates as follows.

■ Registration operation of the phone number of the forwarding destination phone.

■ Registration action to start or stop call forwarding service.

■ Connection operation when a phone that is registered for call forwarding service receives an incoming call.

The individual operations will be explained below based on the relay system diagram of FIG. 1 with reference to FIGS. 2, 3, and 4.

First, FIG. 2 shows the relay method used when registering the telephone number of the transfer destination telephone.

The number of destination phone numbers stored in the speed dial service is currently 20, but when registering a forwarding destination phone number from a 5UBA phone, one of the destination phone numbers stored in the speed dial service is used as the forwarding destination. Used as a storage unit for phone numbers.

Therefore, the operation is the same as when a 5UBA telephone registers a destination telephone number for a shortened service.

For example, if the memory at address 18 out of memory addresses 0 to 19 of the speed dial destination telephone number memory is used as the memory address for the forwarding destination telephone number, 5UBA can be dialed as o*18÷the forwarding destination telephone number.

As described above, no new equipment is required to register the forwarding destination phone number.

Next, FIG. 3 shows a relay method for registering the start or stop of a call transfer service.

When a 5UBA phone goes off hook, it connects to the OR using normal connection operations.

5UBA listens to the dial tone from the OR and dials a special number to start or stop the call forwarding service.

When the OR receives that special number, it starts Omma CM and CM
connects the 5UBA to the SPR and sends the accommodation position information of the 5UBA received from the OR to the SPH.

The M-CONT uses the information to start or stop the memory state of the corresponding memory section of the USM.

This is the operation when registering the start or stop of the absence information service, that is, MES-R-+M-CONT +USM
This is similar to the flow of control information.

Further, FIG. 4 shows a relay method in which when a 5UBA telephone receives an incoming call while registering to start a call forwarding service, it does not connect to 5UBA but connects to the forwarding destination telephone 5UBB.

When there is an incoming call on ICT, the IR is 5UBA under normal method.
Receive the phone number and start the commercial.

When CM receives 5UBA phone number from IR, NG
and obtain caller accommodation location information of 5UBA.

At this time, if 5UBA is a target subscriber for the call forwarding service, the NG reads the memory status of the USM in the same way as the operation for the absentee notification service, and if the memory status indicates that the service is starting, the service will be started along with the accommodating location information of 5UBA. The information to that effect is also transferred to the CM.

When the CM receives the information that the call transfer service is in progress, it does not connect the ICT and SUBANJ, starts up C0NT, and transfers the accommodation location information of 5UBA to C0NT.

When the C0NT receives the information, it converts the designated address (for example, address 18) of the storage unit assigned to 5UBA of the storage unit where the forwarding destination phone number is stored into easy-to-read information, and sends it via the DTE to the station where the storage unit is installed. Send to.

The storage unit installation station returns the telephone number stored in the storage unit corresponding to the sent information to the C0NT.

This telephone number is the telephone number of the transfer destination telephone 5UBB.

C0NT transfers this 5UBH telephone number to CM.

When the CM receives the phone number of 5UBB, it restarts the number group, obtains the accommodation location information of 5UBH, and sends the ICT
and 5UBB.

In other words, an incoming call to 5UBA is automatically transferred to 5UBB.

As explained above, the present invention makes it possible to provide an automatic call forwarding service in an economical and simple manner by utilizing existing equipment for the speed dial service and the absentee notification service. The effect is great.

[Brief explanation of drawings]

Figure 1 is a diagram of a relay system showing an embodiment of the present invention, Figure 2 is a diagram of a relay system when registering a forwarding destination telephone number, and Figure 3 is a diagram of a relay system when registering a call forwarding service to start or stop. ,
FIG. 4 shows a relay system diagram when a call is received on a telephone set in which a call transfer service is being started. 5UBA is a phone that receives call forwarding service, 5UBB
is the forwarding destination phone for 5UBA, ICT is the incoming trunk, ■
R is input register, OR is output register, CM is marker,
NG is the number group, MES-R is the absence guidance service register, M-CONT is the memory controller, US
M is memory in service, CR is service control register,
DTE is information transfer equipment, SPR is register for call transfer service, C0NT is control unit for call transfer service, DT
T is information transfer trunk, ORMC, MESRMS, SP
RMpeIRMC, IRL, CRC, DTC, etc. indicate connectors that connect the same devices.

Claims (1)

[Claims] 1. Stores the start or stop of the service from the absentee guidance service register, sends control information to the memory connected to the number group, receives the accommodating location information of the requesting subscriber from the marker, and stores the same information as the absentee guidance service register and the calling register. A call forwarding register accommodated in the switch frame, and a control device connected between the data transfer device and the marker when making a speed dial connection, transfer the service memory, number group, and marker from the call forwarding register during automatic forwarding registration. and IIJ
#Storing the registration information from the data transfer device to the speed dial storage unit via the device route, and when reading the incoming call transfer, read out the information of the registered transfer destination subscriber to the marker via the route via the control device. , an automatic call forwarding system characterized by automatically forwarding incoming calls to subscribers registered for forwarding.