JPH02288451A - Adaptor for talking - Google Patents

Abstract

PURPOSE:To decrease the data transmission total required time and to reduce the cost required for data transmission by sending the presence of an error in transmission of a talking route selection data to a base station. CONSTITUTION:An adaptor 10F uses an antenna 12 and a reception section 13 to receive a talking route selection data, which is stored in a memory 14. A transmission data from a public network b21 includes designation information representing it that its content is the talking route selection data and the reception section 13 identifies the data. Then the talking route selection data is sent from a base station of the public network b21 repetitively for plural number of times, stored in the memory 14 and a deciding section 15 uses majority decision logic to decide a correct data, which is stored in a memory 17. The deciding section 15 outputs a data representing the presence of an error in the reception data to an error signal transmission section 18. Thus, the time required for data transmission is decreased and the cost is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone call adapter that is attached to a telephone and performs call route selection.

[Conventional technology]

A conventional telephone adapter will be explained with reference to the drawings.

FIG. 3 is a block diagram showing an example of a conventional telephone adapter.

When multiple public networks are provided by multiple telecommunications carriers, multiple call routes exist for one call. When a telephone subscriber makes a call, he or she must select one of several call routes, but it is sometimes difficult to decide which route to take. A call adapter is used that automatically selects a call route.

Conventional call adapters have been configured to receive call route selection data transmitted via a call path for each call adapter from telephone office equipment within the public network.

That is, in FIG. 3, the telephone office equipment in the public network b21 is connected to the conventional telephone adapter 30 attached to the telephone 1 via the public network a20.

The conventional telephone adapter 30 connects the modem 3 through the control section 31.
2 and the communication control device 33 receive call route selection data transmitted from the public network a20 according to a predetermined communication procedure, and correct data is stored in the memory 31. The control unit 31 selects a call route for each call according to the call route selection data stored in the memory 34.

[Problem to be solved by the invention]

The conventional call adapter described above is configured to receive and store call route selection data transmitted via a wired transmission line of the public network, so the time required for data transmission is reduced when the amount of data is large. For example,
-If a company has a large number of call adapters connected to the public network, the time required for data transmission increases, so the time required to transmit the call route selection data increases, resulting in a large amount of billing costs. .

[Means to solve the problem]

The communication adapter of the present invention is a call adapter that is attached to a telephone and selects a call route, and includes a first storage means for receiving and temporarily storing call route selection data transmitted from a wireless base station; error detection means for detecting errors in the call route selection data stored in the storage means;
a second storage means for storing the call route selection data when the call route selection data is received without error;
and transmitting means for transmitting to the base station whether or not there is an error in data transmission of the call route selection data from the base station as a result of the check by the error detection means.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of the present invention.

In FIG. 1, a call adapter 10 of the first embodiment is connected to a telephone 1 and receives call route selection data from an antenna 21 of a wireless base station (not shown) in telephone station equipment in a public network b21. a receiver 13 that receives the call route selection data via the antenna 12; a memory 14 that temporarily stores the call route selection data received by the receiver 13; A determination section 15 that makes a determination, a memory 17 that stores correct call route selection data, an error signal transmission section 18 that transmits a signal indicating the presence or absence of an error based on the determination result of the call route selection data, and a call adapter connected to the telephone 1. a public network a20 that controls the entire 10 and connects a signal indicating the presence or absence of an error in the received data from the error signal transmitter 18 to the public network b21;
and a control section 19 for transmitting data to.

Next, the operation of the first embodiment will be explained.

In FIG. 1, the telephone adapter 10 of this embodiment receives telephone call route selection data via radio from a base station in telephone station equipment in a public network b21.

That is, the call route selection data is transmitted all at once from the antenna 22 of the base station in the telephone office equipment in the public network b21 to a plurality of call adapters 10 existing in a certain area within the radio wave effective range. Ru.

The telephone adapter 10 of the first embodiment receives the telephone route selection data using the antenna 12 and the receiving section 13 and stores it in the memory 14 . The transmission data from the public network b21 includes designation information indicating that the content is false call route selection data, and is identified by the receiving unit 13.

In the first embodiment, as a transmission data error control method, the transmission data is repeatedly transmitted multiple times, and the reception side uses majority logic to determine the correct data. Call route selection data is repeatedly sent multiple times. A plurality of pieces of call route selection data are stored in memory 14. The plurality of pieces of data are determined to be correct by majority logic in the determining section 15 and are stored in the memory 17. The determining unit 15 outputs a determination result based on majority logic, that is, data indicating the presence or absence of an error in the received data to the error signal transmitting unit 18.

After the transmission of the call route selection data is completed, the telephone office equipment in the public network b21 is connected to the call adapter 10 attached to the telephone set 1 via the public network a20, and an error signal is transmitted from the error signal transmitter 18 through the control unit 19 of the call adapter 10. Receive a signal indicating whether there is an error in the received data. If there is an error, the public network b21 retransmits the data or performs a maintenance test.

FIG. 2 is a block diagram showing a second embodiment of the invention.

The difference between the second embodiment and the first embodiment is that the public network b2
As an error control method for the transmission data from 1, an error correction detection section 16 is provided, which adds an error correction code to the transmission data and transmits the data, and corrects and detects the error in the telephone adapter 10a of the embodiment of the bookcase. .

Next, the operation of the embodiment of the bookcase 2 will be explained using FIG. 2.

When call route selection data with an error correction code added is transmitted from the base station in the telephone office equipment in the public network b21,
In the call adapter 10a, the call route selection data is received by the antenna 12 and the receiver 13, and is stored in the memory 14. The error correction detection unit 16 performs error correction or detection on the received data using a method using a generator polynomial or the like, and outputs error-free data to the memory 17. Further, the error correction detection section 16 outputs the result of the error correction detection, that is, data indicating the presence or absence of an error in the received data to the error signal transmission section 18.

In this second embodiment, since the call route selection data is transmitted from the base station of the public network b21 once, there is an advantage that the wireless channel occupation time is shorter than in the first embodiment.

〔Effect of the invention〕

As explained above, the present invention receives call route selection data transmitted from a base station of a public network, performs a majority decision on the content when the call route selection data is transmitted multiple times, and , when the call route selection data is transmitted with an error correction code added, error correction detection is performed on the contents, and when the call route selection data is received without error, the data is stored, and the data is stored for transmission of the call route selection data. By transmitting the presence or absence of an error to the base station, the base station can collectively transmit call route selection data to multiple call adapters existing in a certain area, and then check whether or not there is an error in data transmission. Since it can be confirmed individually, even if the amount of call route selection data is large and the number of call adapters is large, the total time required for data transmission can be shortened compared to the conventional case, and therefore the cost required for data transmission can be reduced. The effect is that it can be done for a small amount of money.

15... Judgment unit, 16... Error correction detection unit, 17.
...Memory, 18...Error signal transmission unit, one...Control unit, 20...Public network a, 21...Public network b, 22
...Antenna, 30...Call adapter, 31...
Control unit, 32...modem, 33...communication control device,
34...Memory.

Claims (1)

[Claims] A telephone adapter that is attached to a telephone and performs call route selection includes a first storage means for receiving and temporarily storing call route selection data transmitted from a wireless base station; an error detection means for detecting an error in the call route selection data; a second storage means for storing the call route selection data when the call route selection data is received without error; and a result of checking by the error detection means. 1. A telephone adapter comprising: transmitting means for transmitting to the base station whether or not there is an error in data transmission of the telephone call route selection data from the base station.