SK36696A3 - Charge recording in a telephone network - Google Patents

Abstract

The invention concerns a method of transmitting charge data to the subscriber connectors and for emitting charge pulses to the subscriber connector a/b interface in a local switching and transmission system which is arranged as a local radio cell, consisting of a central stationary radio station and a plurality of decentralized subscriber connectors, and, as a local or private branch exchange, is connected to the public telecommunication system. According to the invention, the base station of each radio cell stores a distance zone table which is adapted to the location and which contains the clock pulse data for calculating the charges, for the local area and all telecommunication connections outside the local area. During an outgoing communication from a radio subscriber, the call number selected by this subscriber is compared automatically with the distance zone table and the appropriate clock pulse data is removed and transmitted to the subscriber connector which generates standard charge pulses according to the clock pulse transmitted and emits them to the a/b interface. The standard charge pulse of 12 kHz or 16 kHz cannot be transmitted via radio channels whose transmission band-width is restricted to the speech band from 300 Hz to 3400 Hz. As a result of the solution applied, the charge pulse does not have to be transmitted, as in as other, conventional processes, as a substitute signal embedded in the speech band, which, according to experience, would disturb the transmission of modem and fax machine signals.

Description

How to set charges on the phone network

Technical field

The invention relates to a method for transmitting toll information to subscriber apparatuses and for transmitting charge pulses to an A / B interface of subscriber apparatuses in a local switching and transmission system, which is organized as a local radio cell that consists of one central radio base and a larger number of distributed subscriber devices. This system is connected to the public communications network as a local exchange or branch office.

A similar local connection and transmission system is known from WO 94/13112 (respectively DE 42 20 2499 *).

BACKGROUND OF THE INVENTION

From the prospectus fi. COMTEL Telephone und Datentechnik GmbH & Co. KG, Brucker str. 53, 82205 Gilching b. Munchen is a well-known system in which a coin-operated fax and telephone are equipped with an integrated toll-counter, which eliminates the phone's dependence on 16 kHz pulses from the telephone company. For the purposes of determining charges, either 16 kHz charging pulses or charging units are calculated on the basis of the selected number according to the following distinguishing points: local, near, state or long distance calls in three tariff zones, mobile phone services, with special services (eg receiving a telegram) are blocked, free of charge (police, physician) and unit numbers including basic charges are freely programmable.

In the arrangement according to the above-mentioned method, which is known from German patent application P 4y 20 24y, in particular in special arrangements, it is difficult under certain operating conditions to transmit toll information to the subscriber radio apparatus of said radiotelephone system and to transmit it to the A / B interface. of these radio devices as a standard charge pulse for their needs. The default situation is that a standard 12 kHz or 16 kHz charge pulse cannot be transmitted over a radio channel, and that a replacement signal set in the 300 Hz to 3400 Hz speech band would interfere with the transmission of modem or fax signals.

SUMMARY OF THE INVENTION

The essence of the invention of the telephone network method consists in enabling the calculation of the fees at the location of the polling subscriber a radio channel.

the setting of charges in the mode of operation, respectively their determination even when used

The task is solved according to claim 1 in that in the base station, each cell of tariff tariffs. It contains a tapestry of the straddle cell bands that corresponds to clock information for local area charges and for all communications connections outside the local area. The base station, while the telephone subscriber is in service, automatically compares the selected number with the tariff table, subtracts the corresponding clock information and transmits it to the subscriber, which generates standard charge pulses in the corresponding transmitted clock, which are transmitted to the A / B interface.

This achieves the fact that the above-mentioned device can still provide the subscriber with the charge information even if it damages or disables the transmission of the standard charge pulses.

The invention also relates to a method of operation (claim S) when clock information is transmitted from a base station when a start signal is given on the other side (subscriber B picked up). This will ensure that charging starts only when the other party answers the call, as is usual with most networks.

The invention also relates to a method of operation (claim 3), when the clock information is transferred from the base station immediately after the Trunk is occupied to the notification network, in those cases where no initial indication is given on the other hand.

The invention also relates to a method of operation according to claims 1 and 5, wherein the subscriber apparatus takes the transmission of the clock information at the same time as an initial sign.

The invention also relates to a method of operation (claims 1 and 3) wherein an extension between the reception of the clock information and the onset of the first charge pulse can be programmed in the subscriber apparatus, generally taking into account the time between busy connection to the reporting network and pickup by subscriber B.

As mentioned above, the default situation is that a standard charge pulse with a frequency of 1S kHz or 16 kHz cannot be transmitted over the radio channel because the transmission bandwidth of the channel is limited to the speech band from 300 Hz to 3400 Hz. The default situation is also that a substitute signal set in the speech band from 300 Hz to 3400 Hz would interfere with the transmission of modem or fax signals and that the parallel additional transmission path (second radio channel) is not available or financial reasons acceptable.

The state of the art is that, in cases where, for various reasons, impulses cannot be transmitted, special coin-operated phones (Intelligent Payphones) are used. They compare the number chosen by the subscriber with the stored tariff table and calculate the charges based on the clock selected from the table. The disadvantage of this procedure is that corresponding hardware and software resources are required for each terminal. Another disadvantage is that, as a consequence of the aforementioned disadvantages, a limited grading of charges is usually employed (the greater the depth of the gradation, the stronger the dependence of the tariff table on the band and the higher the procurement and update costs are in operation). In addition, this mode of operation does not offer any solution when using private customer telephones that can display call charge data based on charge impulses. A typical representative of the above-mentioned mode of operation and this category of apparatus is the aforementioned arrangement according to the prospectus fi. Comté region.

According to the invention, therefore, in the telephone network according to the above arrangement (such as in DE 4S 40 S49 A1), a base station table is stored in the base station containing the corresponding toll clock information for all possible local and state telephone numbers, mobile telephone numbers. As this table is only one for the whole radio cell, the cost of first installation and upgrade costs during operation are scarce. This allows for greater depth scaling of the table and thus more accurate fee calculations than is the case with the aforementioned method. Owing to the mode of operation claimed by us, the charge information can be provided not only to the coin telephone but also to all other subscribers, so that it is also possible to provide this information to private customers who would use phones with appropriate equipment during the call.

Overview of the figures in the drawing

The invention is explained in more detail on the basis of the exemplary embodiments shown in the figures.

Fig. 1 shows a tariff tree table search tree.

Fig. S shows a block diagram of a clock information transmission apparatus.

DETAILED DESCRIPTION OF THE INVENTION

The table of tariff zones is organized as a search tree - fig. 1. Search levels 1,1, 1.8, 1.3, etc. correspond to the selected numbers 1, 8, 3, etc. The search algorithm is the same for all branching points, as shown in the example. The choice leads to the branching point 1.6. where further dialing of the next number is expected, it will be evaluated whether this number would continue to the next lower level. If the number does not continue to the next lower level, the search is terminated and the numeric value is 1.? (clock information) associated with this branch point. If the following number is 3 in the example, continue through transition 1.8 to the next point 1.9.

If the end point is reached, such as 1.10, then the numeric value corresponding to that point is immediately valid and the search is terminated so that the next digit is not expected.

In FIG. 1 also shows that in the first level 1.1 the local tariff applies if the following digit is neither 0 nor 1. If the next digit is 1, the free case 1.11 applies. This allows for high search speeds, and shortest path searches will be interrupted until there are additional transitions or another valid transition.

Once in the radio network according to the above arrangement, e.g. according to DE 48 40 849 A1, the subscriber apparatus registers in an organizational channel, thus following the connection of the apparatus by the base station to a free channel according to the radio connection protocol recorded in the basic patent. The digits selected by the subscriber (or automatically by the terminal) are transmitted over this speech channel. The selected digits detect the channel component that is assigned to this speech channel S.1 (see Fig. S). Two detectors are required for this.

a) The first detector 8S is a modem which is connected by its receiving input to the output of the channel receiver RX S.4. This detects the selected digits, which are transmitted from the subscriber unit by a modem signal in the BGD code. This applies to all dialed digits that come from the subscriber memory and the pulse dial terminals. The detected information is transferred from the modem 2.8 to the channel controller

8.5. Therefore, the data output of the modem 8.S is connected to the data input of the channel controller 8.5. The dial-up dialed numbers are transmitted to the Dual Tone Transmitter 8.7 via the channel controller 2.5, which outputs a DTMF-select signal which will be transmitted to the PCM-Godec 8.9 by the merger 8.8. During this operation, the switch 8.6 opens the switch 8.6 to prevent interference with the DTMF dialing by the modem signal.

b) The second detector 8.5 is a Dual Tone Reciever (DTR) which is connected to the output of the channel receiver 8.4 by its receiving input. This detects the selected digits that come from the DTMF terminal. The detected information is transmitted from DTR 2.5 to the channel controller 8.5. Therefore, the data output DTR 8.3 is connected to the data input of the channel controller

8.5. During this operation, the switch S.6 is switched on by the channel controller S.5 so that the selected digits can be transferred to the PCM-Codec S.9 via the merger S.8 without a new design.

The result of the search is clock information that is stored in the channel controller 2.5. Once a start signal has been given from PCM-Codec 2.9 of the channel assembly 2.1, the clock information is transmitted by radio path from the channel controller 2.5 to the subscriber. Therefore, the data output of the channel controller 2.5 is coupled to the transmit input of modem 2.2. The transmit output of modem 2.2 is connected to the input of merge 2.10. The output of the merger 2.10 is connected to the TX transmitter input, whereby the modem signal is applied to the broadcast path.

The receiving information is evaluated as a start signal by the subscriber. Then, a polarity switching is made on the A / B-connection of the subscriber, if any. this additional function programmed. After the programmable extension, the first charge pulse is generated. Other charge pulses are generated to match the specified clock.

A programmable extension, specifying the time that elapses before the first charge pulse is transmitted, and which is entered when the subscriber is first initialized, is necessary to achieve two different meanings of the initial sign.

1. The base station shall be connected to the notification network by the call line. These can be analogue state lines for call-through operation (IKZ-Impulz-Kennzeichen-Verfahren, DID-Direct Invard Dialing, analog E&M cross-links) or digital call-systems (So-ISDN basic connection, S2M-ISDN primary multiplex connection, PCM / E & M) -configured, MFC / R2 and others). In these cases, an initial indication is given from the notification network when Subscriber B picks up and may be followed by the delayed transmission of the first charges.

2. If the base station is connected by the local loop to the local exchange (HKZ - HauptanschluB Kennzeichen - Verfahren), no initial indication shall be given from the subscriber when picked up by subscriber B. In this case, the time at which it is occupied shall be taken as the initial indication. connection to the local exchange (local loop). In this case, an extension between the start signal and the transmission of the first charge pulses, which usually takes time into account, may be programmed in the subscriber apparatus. between the busy connection to the notification network and the pickup of subscriber B.

The charge pulses may be transmitted as 12 or 16 kHz pulses. Here, therefore, a programmable sine generator is usually used, which can be set to the required frequency by the subscriber control and operates in the Start / Stop mode. The output of the programmable sine generator is connected to a SLIC (Subscriber Line Interface Circuit), which amplifies the signal and transmits it to the subscriber's A / B-connection.

The variant currently in use will be programmed when the subscriber is first initialized.

Industrial usability

The method of determining charges in the telephone network can be used in the field of telecommunications to indicate participation fees.

Claims (3)

PATNETOVÉ POHOVKY 1. A method of determining charges in a telephone network for transmitting charge information to subscriber apparatuses and transmitting charge pulses to an A / B interface of subscriber apparatuses in a local switching and transmission system organized as a local radio cell consisting of: and is connected to the public communications network as a local exchange or a branch device, characterized in that a base station table of each radio cell is stored in the base station of each radio cell, corresponding to the location of the base station and containing a clock station. deduction information for the local area and for all communication links outside the local area; while the telephone subscriber is in operation, the selected number is automatically compared with the tariff zone table, the corresponding clock information is subtracted and transmitted to the subscriber, which generates standard charge pulses in the corresponding transmitted clock, which it transmits to the A / B interface, Method according to claim 1, characterized in that the clock information is not transmitted from the base station until the start signal (subscriber B has picked up) from the other side. Method according to claim 1, characterized in that the clock information from the base station starts to be transmitted as soon as the connection beam is connected to the remote reporting network, in those cases in which no initial indication is given on the other hand. 4. A method according to claims 1 and 2, characterized in that the subscriber apparatus takes the transmission of the clock information at the same time as an initial sign. to be in a subscriber between tak5 revenue. Method according to claims 1 and 3, characterized in that the device can be programmed to extend the turging information and the onset of the first charge pulse, which generally takes into account the time between the cable being connected to the notification network and the pickup of subscriber B.