JPS6147465B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a representative selection system in an automatic switching system.

Conventionally, in the representative selection method, based on the accommodation location information of the called side and the representative selection group information, only the order of the extension accommodation location information stored in the representative selection memory within each representative selection group is used. Incoming calls were distributed and furthermore, when one representative selection group was all busy, they were only forwarded to a specific extension. Therefore, incoming calls are not evenly distributed among the extensions within each extension representative group, and even when one representative selection group is all busy, incoming calls concentrate on a particular extension.

SUMMARY OF THE INVENTION An object of the present invention is to provide a representative selection method that can evenly distribute incoming calls to extensions belonging to the same extension representative selection group and allow calls to be properly terminated even when all lines are busy.

The representative selection method of the present invention includes a circuit for identifying receiving side accommodation location information, a memory for storing representative selection information, a representative selection memory reading circuit, and a memory for storing accommodation location information of the extension that received the previous call corresponding to the representative selection group. and a circuit for collating accommodation position information of the extension that received the last time corresponding to the representative selection information and the representative selection group, an extension status identification circuit, and a memory for storing transfer light information when all calls are busy, and based on the output of the collation circuit. The incoming call is selected, and the extension state identification circuit checks whether the extension is idle or busy, and when all the extensions in the representative selection group are busy, the incoming call is transferred. .

Embodiments of the present invention will be described below with reference to the drawings. When an incoming call is received in FIG. 1, the receiving side accommodation location identifying circuit 1 transfers the extension accommodation location information stored in the internal extension accommodation location information storage register 21 to the extension accommodation location information storage in the representative selection memory reading circuit 3. Output to register 22. The representative selection memory read circuit 3 outputs the extension accommodation position information in the extension accommodation position information storage register 22 to the extension accommodation position information storage register 23 in the representative selection group information memory 4. The representative selection group information memory 4 stores representative selection group information to which the extension belongs in response to the extension accommodation position information input to the extension accommodation position information storage register 23 via the memory address control circuit 51. The representative selection group information to which the extension belongs is read out and stored in the representative selection group information storage register 71. Representative selection group information storage register 7 in representative selection group information memory 4
The representative selection group information stored in 1 is stored in the representative selection group information storage register 72 in the representative selection memory readout circuit 3.
is output to. Next, the representative selection group information input to the representative selection group information storage register 72 in the representative selection memory readout circuit 3 is transferred to the representative selection group information storage register 73 in the temporary storage memory 8 and the representative selection group information in the representative selection memory 9. It is output to the storage register 74.
In the temporary storage memory 8, according to the representative selection group information input to the representative selection group information storage register 73, the accommodation position information of the extension that received the previous call corresponding to the representative selection group information is stored via the memory address control circuit 52. The storage location information of the extension that received the previous call in the representative selection group is stored in the extension storage location information storage register 24. Further, the accommodation position information of the previously arrived extension corresponding to the representative selection group stored in the extension accommodation position information storage register 24 in the temporary storage memory 8 is output to the extension accommodation position information storage register 25 in the verification circuit 11. On the other hand, in the representative selection memory 9, accommodation position information of extensions belonging to each representative selection group is stored for each representative selection group via the memory address control circuit 53 based on the representative selection group information input to the representative selection group information storage register 74. The memory 12 which is divided into and stored is referred to and stores the accommodation position information 1 of the extensions belonging to the representative selection group.
One by one, they are read out and stored in the extension accommodation position information storage register 26. Further, the representative selection memory 9 outputs the extension accommodation position information stored in the extension accommodation position information storage register 26 to the extension accommodation position information storage register 27 in the matching circuit 11. Next, verification circuit 1
1, the accommodation position information of the extension that received the previous call stored in the extension accommodation location information register 25 is internally compared with the accommodation location information of the extension read from the representative selection memory 9 stored in the extension accommodation location information storage register 27. Verification is performed by circuit 13. If the comparison results do not match, the representative selection group information stored in the representative selection group information storage register 72 in the representative selection memory reading circuit 3 is outputted again to the representative selection group information storage register 74 in the representative selection memory 9; The storage position information of the next extension read earlier for the extension belonging to the representative selection group in the memory 12 which stores the storage position information of the extension belonging to each representative selection group divided for each representative selection group is stored. It is stored in the position information storage register 26 and further outputted to the extension accommodation position information storage register 27 in the verification circuit 11. The verification circuit 11 again compares the accommodation location information of the extension that arrived last time stored in the extension accommodation location information storage register 25 and the accommodation location of the extension newly read out from the representative selection memory 9 and stored in the extension accommodation location information storage register 27. The position information is verified by an internal verification circuit 13. On the other hand, if there is a match as a result of the first or several re-verifications, new extension accommodation position information is read out from the representative selection memory 9 as in the case where there is no match, and the extension accommodation position information is transferred to the representative selection memory reading circuit. It is output to the extension accommodation position information storage register 22 in 3. The extension accommodation position information stored in the extension accommodation position register 22 in the representative selection memory reading circuit 3 is sent to the extension accommodation position information storage register 28 of the extension status identification circuit 14 and the extension accommodation position information storage register 25 in the matching circuit 11. Output. The extension status identification circuit 14 checks whether the extension is idle or busy based on the extension accommodation location information stored in the extension accommodation location information storage register 28. If the extension is empty as a result of the check, the extension is set as the extension for the current call, and at the same time, the representative selection group information stored in the representative selection group information storage register 72 in the representative selection memory reading circuit 3 is stored in the temporary storage memory 8. The representative selection group information is outputted to the representative selection group information storage register 73 of the memory 10 which stores the accommodation position information of the extension that received the last call corresponding to the representative selection group via the memory address control circuit 52. Extension accommodation position information storage register 2 in memory readout circuit 3
2, the accommodation location information of the extension that will receive the call this time is stored. If the extension is busy as a result of checking whether the extension is empty or busy in the extension status identification circuit 14, the representative selection group information stored in the representative selection group information storage register 72 in the representative selection memory reading circuit 3 is read into the representative selection memory 9.
output to the representative selection group information storage register 74 in
Through the memory address control circuit 53, the memory 12 which stores the accommodation position information of the extensions belonging to each representative selection group is divided and stored for each representative selection group, and is first read out to perform an empty/busy check. The storage position information of the extension next to the extension that has been selected is stored in the extension storage position information storage register 26 in the representative selection memory 9, and the stored extension storage position information is stored in the extension storage position information storage register 27 in the matching circuit 11. Output. In the verification circuit 11, the extension accommodation position information storage register 2
The internal checking circuit 13 compares the extension accommodation position information that was first checked for empty/busy in step 5 with the newly read extension accommodation position information stored in the extension accommodation position information storage register 27. If there is no match as a result of matching,
The newly read extension accommodation position information stored in the extension accommodation position information storage register 27 is output to the extension accommodation position information storage register 22 in the representative selection memory reading circuit 3. Based on the extension accommodation position information inputted to the extension accommodation position information storage register 22, the representative selection memory reading circuit 3 uses the extension status identification circuit 14 to again check whether the extension is idle or busy. If the extension is empty as a result of the check, the extension is set as the extension to which the call will arrive this time and is stored in the corresponding location in the temporary storage memory 8. If the result of the empty/busy check is that the call is busy again,
The extension accommodating position information is read out from the representative selection memory 9 again and output to the internal accommodating position information storage register 27 in the matching circuit 11. If the comparison results in a match, the representative selection group information stored in the representative selection group information storage register 72 in the representative selection memory reading circuit 3 is output to the representative selection group information storage register 75 in the all-busy transfer destination memory 15. Transfer destination memory 1 when all calls are busy
5, the representative selection group information stored in the representative selection group information storage register 75 is used to refer to the memory 16 for storing transfer destination information when all calls are busy for each representative selection group via the memory address control circuit 54. The transfer destination information when busy is stored in the transfer destination information storage register 17 when all busy. If the stored conversation transfer destination information is extension accommodation location information, the extension of the extension accommodation location information is the extension that will receive the call this time, and if the all busy transfer destination information is representative selection group information, the representative selection group information. is output to the representative selection group information storage register 72 in the representative selection memory reading circuit 3, and the above-described processing is repeated.

The embodiments of the present invention have been described above, but in short, incoming calls are evenly distributed to extensions belonging to the same representative selection group, so calls can be properly received even when a call is busy.

As explained above, the present invention provides a memory for storing the accommodation location information of the extension that received the last call and a memory for storing the forwarding destination information when all calls are busy for each representative selection group. Incoming calls are evenly distributed among the extensions belonging to the group, and calls can be properly received even when all the extensions in the representative group are busy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention. 1... Receiving side accommodation position identification circuit, 21 to 28...
...Extension accommodation position information storage register, 3...Representative selection memory read circuit, 4...Representative selection group information memory, 51-54...Memory address control circuit, 6
...Extension representative selection group information storage memory, 71-75
. . . Representative selection group information storage register, 8 . . . Temporary storage memory, 9 . . . Representative selection memory, 10 . ... Extension accommodation location information division storage memory, 13 ... Internal verification circuit, 14 ... Extension status identification circuit, 15 ... Transfer destination memory when all calls are busy, 16 ... Transfer destination information storage memory, 17 ... All calls Time transfer destination information storage register.

Claims (1)

[Claims] 1. An incoming call accommodation location information identification circuit, a representative selection memory read circuit, a memory for storing representative selection information, a memory for storing accommodation location information of the extension that received the previous call corresponding to the representative selection group, and the representative selection information and the representative selection group. For this purpose, a verification circuit that verifies the accommodation location information of the extension that received the last call, an extension status identification circuit, and a memory that stores transfer information when all calls are busy are provided. The next incoming extension is selected, and the extension status identification circuit checks whether the extension is idle or busy, and when all extensions in the representative selection group are busy, the incoming call is transferred. A representative selection method featuring: