CA2172833A1 - Charge recording in a telephone network - Google Patents
Charge recording in a telephone networkInfo
- Publication number
- CA2172833A1 CA2172833A1 CA002172833A CA2172833A CA2172833A1 CA 2172833 A1 CA2172833 A1 CA 2172833A1 CA 002172833 A CA002172833 A CA 002172833A CA 2172833 A CA2172833 A CA 2172833A CA 2172833 A1 CA2172833 A1 CA 2172833A1
- Authority
- CA
- Canada
- Prior art keywords
- subscriber
- charge
- local
- equipment
- time clock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/24—Accounting or billing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/32—Charging, billing or metering arrangements for satellites or concentrators which connect one or more exchange lines with a group of local lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/34—Charging, billing or metering arrangements for private branch exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/83—Notification aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
- H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/20—Technology dependant metering
- H04M2215/2026—Wireless network, e.g. GSM, PCS, TACS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/32—Involving wireless systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/82—Advice-of-Charge [AOC], i.e. notify subscriber of charges/cumulative charge; meter at the substation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Meter Arrangements (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Described is a process for the transmission of charge information to the subscriber switch-in equipment and for the output of charge pulses at the a/b interface of the subscriber switching equipment in a local communications and transmission system which is organized as a local radio cell comprising a central fixed radio site and a plurality of decentralized subscriber switch-in devices and is connected to the public telecommunications network as a local exchange office or as a private branch exchange facility. According to the invention, a distance zone table which is adapted to the location is stored in the base station of every radio cell and contains the time clock information for charge accounting for the local zone and all communications outside the local zone, and the telephone number dialed by a radiotelephone subscriber is automatically compared with the distance zone table during the ongoing communication of the radiotelephone subscriber, the applicable time clock information is obtained and transmitted to the subscriber switch-in equipment which generates standard charge pulses corresponding to the transmitted time clock and gives out this information at the a/b interface.
The standard charge pulse of 12 kHz or 16 kHz cannot be transmitted over radio channels whose transmission bandwidth is restricted to the voice band from 300 Hz to 3400 Hz. As a result of the applied solution, in contrast to conventional processes, the charge pulse need not be transmitted as a substitute signal which is embedded in the voice band and which would cause interference in the transmission of signals from modems and facsimile devices as experience has shown.
The standard charge pulse of 12 kHz or 16 kHz cannot be transmitted over radio channels whose transmission bandwidth is restricted to the voice band from 300 Hz to 3400 Hz. As a result of the applied solution, in contrast to conventional processes, the charge pulse need not be transmitted as a substitute signal which is embedded in the voice band and which would cause interference in the transmission of signals from modems and facsimile devices as experience has shown.
Description
ILE, PL`J 1;~
-- TE~TR~ r~ 172833 CHMGE DETECTION IN A TELEPHONE NETWORK
The invention is directed to a process for the tr~n~mission of charge i~ nalion to the subscriber access equipment or switch-in equipment and the output of charge pulses at the a/b interface of the subscriber switching equipment in a local communications and ll ~n~ c~ion system which is organized as a local radio cell comprising a central fixed radio site and a plurality of decentralized subscriber switch-in devices and is connected to the public telecommunications network as a local exchange office or as a private branch exchange facility.
A local communications and transmission system ofthis kind is known from WO
94/13112 (or DE 42 20 249 Al).
Further, it is already known from a brochure issued by COMTEL Telefon und Datçntechnik GmbH & Co. KG, Brucker Str. 53, 82205 Gilching b. Munchen, to provide a coin-operated facsimile device and a coin-operated telephone with a charge computer which is integrated in the telephone and which frees the telephone from dependence upon the 16 kHz pulse of the telephone network operating company. Charges are detected either by forming the 16 kHz charge pulse or by calcul~ing the charge units based on the dialed telephone number with the following distinctive characteristics: local call, local area call, domestic call, international call in 3 rate zones, and mobile comrnllnications services, wherein special services (e.g., telegram reception) are blocked and toll-free telephone numbers (110, 112) are taken into account and the charges, inclu(1inz base charges, can be freely progr~mme~
In an arrangement of the type mentioned above, but particularly in a special arrangement known from German Patent Application P 42 20 249, it is difficult under certain operating conditions to transmit charge information to the subscriber's radiotelephone equipment in the radiotelephone system described in this reference and to output this charge information at the a/b interface of the subscriber's radiotelephone equipment as a standard charge pulse for the use of this connec~ed end equipment. The initial situation is such that the standard charge pulse of 12 kHz or 16 kHz cannot be tr~n.cmitted over the radio channel and a substitute signal in the voice band of 300 Hz to 3400 Hz would interfere with the ll~n~ ;on of signals from modems and facsirmile devices.
The object of the present invention is to indicate a procedure whereby it is possible to calculate and detect charges at the location where the call is dialed, also when a radio channel is used.
This object is met according to claim 1 in that a distance zone table which is adapted to the location is stored in the base station of every radio cell and contains the time clock information for charge accounting for the local zone and all communications outside the local zone, and in that the telephone number dialed by a radiotelephone subscriber is automatically compared with the distance zone table during the ongoing communication of the radiotelephone subscriber, the applicable time clock information is obtained and tr~n~mitted to the subscriber switch-in equipment which generates standard charge pulses corresponding to the transmitted time clock and gives out this information at the a/b interfàce.
In this way, the system mentioned above can also easily provide the subscriber with charge information when a radio channel impairs or renders impossible the tr~nsmi~sion of standard charge pulses.
According to a second embodiment form (claim 2) of the process according to the invention, the time clock information is transmitted from the base station in the presence of an off-hook signal at the remote station (the called subscriber or subscriber B has picked up).
Accordingly, as iS customary in most networks, accounting of charges begins only when the other subscriber has answered the call According to a third embodiment form (claim 3) of the process according to the invention, the time clock information is transmitted from the base station in cases when no identification signal is sent from the remote station with the holding or seizing of the trunk to the communic~tions network.
According to a fourth embodiment forn~ of the process according to invention as set forth in claims 1 and 2 (second embodiment form), the subscriber switch-in equipment ~csesses the tr~n~mission of the time clock information simultaneously as an off-hook signal.
Finally, according to a fi~h embodiment form of the process according to the invention as set forth in claims 1 and 3 (third embodiment form), a waitina period car. be programmed in the subscril)er switch-in equipmetlt between reception uf the time clock information and the output of the first charge pulses, this waiting period taking into account, as a lump sum, the period between the tiMe that a trunk to the communications network is seized and the time that subscriber B picks up.
The invention is described more fully with reference to embodiment examples which are shown in the drawings.
Fig. I shows an access tree or search tree of a distance zone table;
Fig. 2 shows a block diagram of the time clocl; transmission arrangement.
As was already mentioned, the initial situation consists in that the standard charge pulse of 12 kHz or 16 kHz cannot be transmitted over the radio channel since its tr~n~mi~.~ion bandwidth is limited to the voice band of 300 Hz to 3400 Hz, a substitute signal in the voice band of 300 Hz to 3400 Hz would interfere with the tr~nsmi~sion of signals from modems and facsimile devices, and a parallel additional transmicsion path (second radio channel) is not available or is not acceptable for reasons of cost.
It is known in the art to use special coin-operated telephones (intelligent pay phones) in cases where charge pulses cannot be transmitted for various reasons. These special pay telephones compare the telephone number dialed by the subscriber with a stored distance zone table and calculate the charoes based on the time clock taken from this table. The disadvantages of this ,urocess consist in that each end apparatus must contain the required hardware and software, that, as a consequence of this, a generally limited dilrerellliation of charges is worked with (the greater the depth of di~ere~ltiation, the greater the location-dependence of the distance zone table and the higher the costs for initial outfitting and for ~pdating in operation), and finally that the process does not offer a solution for the use of convenience telephones by private clients where the call charges are displayed on the basis of charge pulses. A typical e~ample of this solution and of this category of equipment is the COMTEL arrangement mentioned above.
According to the invention, a distance zone table cont~ining the respective charge clock information for all country codes, local codes, and codes for mobile networks and special services, etc. is stored in a radio network of the type mentioned in the introduction (as is described in DE 42 40 249 Al) in the base tation. Since only one table is provided for the entire radio cell, the cost of initial inst~ tion and updating (costs for updating during on-going operation) is low in proportion to the numl)er of subscribers. This enables a greater depth of differentiation of the table and accordingly a more exact accounting of charges than was possible in the processes mentioned above. In addition to coin-operated telephones, all other radio subscribers can also be provided with charge information as a result of the process '- 2172833 described in the following, so that charges can be displayed during the conversation also for private customers using convenience telephones.
The distance zone table is organized as a search tree as is shown in Fig. 1. The search levels 1.1, 1.2, 1.3, etc. correspond to the first, second, and third telephone number dialed, etc.
The search algorithm is the same for all branch points as will be shown in an example. Having arrived at branch point 1.6, the next digit selection is awaited and checked to determine whether or not this digit will require a transition to the next deepest level. If no such transition is required for the next digit, the search is terminated and the numerical value 1.7 allocated to the branch point (time clock informatioll) is valid. If the ne~t digit in the example is a "3", the next point 1.9 is jumped to ~ia the transition 1.8. If the point arrived at, e.g., 1.10, is an end point, the numerical value associated with this point is immediately valid and the search will be termin~ted without having to wait for the next digit to be selected.
Fig. 1 also shows, by way of example, that the local rate is applicable in the first level 1.1 provided the following digit is not "O" or " 1". If the lollo~ing digit is " 1", the call will be "toll-free". Tl1is process enables fast search speeds and the search is interrupted based on the principle of the shortest distance if there is no further transition or no further valid transition.
When a dialing req~lest on the part of tlle subscriber switch-in equipment in the or~ni7~tion channel is detected in the radio network of the type mentioned in the introduction or according to DE 42 40 249 Al, the base station orders the equipment into an unoccupied call channel correspondin~ tv the communications protocol described in the basic patent. The digits dialed by the subscriber (or selected automa~ically by the end equipment) are ~ ed in this call char,nel. The channel compollent group 2.1 associated with this call channel (see ~ig. 2) detects the dialed digi~-s. Two detectors are required for this purpose:
a) A first detector 2. 2 is a modem whose receiver input is com1ected to the output of the channel receiver RX 2.4. The dialed digits transmitted in BCD code by the subscriber switch-in equipment per modeln signal are detected by this detector. This applies to all dialed digits origill2til1g in the memory of the subscribe.r switch-in equipment and from the end equipment with pulse dialinO. The de!ected information is t~ s.~ (ed from the modem 2.2 to the channel controller 2.5. For this purpose, the data output ofthemodem 2.2 is comlected with a data input ofthe channel controller 2.5. The dial digits transmitted by modem are fed to a dual tone transmitter 2.7 by the channel controller 2.5, this dual tone transmitter 2.7 sends a DTMF dial signal which is transmitted to the PCM codec 2.9 via a combiner 2.8. ~uling this process, the channel controller 2.5 opens a switch 2.6 to prevent interference in the DTM~ dialing by the modem signal.
b) A second detector 2.3 is a dual tone receiver (DTR) whose receiver input is connected to the output of the channel receiver 2.~. This detects the dialed digits origin~ting from the end equipment with DTI~qF dialing. The detected information is delivered to the channel controller 2.5 fro:n the DTR 2.3 . For this purpose, the data output of the DTR 2.3 is connected with a data input ofthe channel controller 2.5. During thisprocess, the switch 2.6 is closed by the chamlel controller 2.5 so that these dialed digits are transmitted via a combiner 2.8 to the PCM codec 2.9 without further conversion.
The detected data are transmitted from tlle channel controller 2.5 via a data bus 2.12 to the radio control servel 2.13 whicll condilcts the search in the distance zone table 2.14 for all channel component groups. The search results are transmitted from the FLS 2.13 to the channel controller 2.~.
The search results contain time clock information which is first stored in the channel controller 2.5. As soon as the off-hook signal is received from the PCM codec 2.9 ofthe channel component group 2.1, the time clock information is transmitted from the channel controller 2.5 via the radio channel to the subscriber s~itch-in equipment. For this purpose, a data output of the channel controller 2.5 is colmected with the transmitter input of the modem 2.2. The transmitter output of the modem 2.2 is connected to the input of a combiner 2.10.
The output of the combiner 2.10 is connected to the input of the tr~nsmitter TX 2.1 1 by means of which the modem signal is fed into the tr~ micsion path at this point.
The reception of the time cloclc information is assessed by tlle subscriber switch-in equipment as an off^hook signal. Subsequently, insofar as this optional function is programmed, the polarity reversal is carried out at the a/b connection of the subscriber switch-in equipment. After the expiration of a prograrnmable waiting period, the first charge pulse is generated. The additional charge pulses are generated corresponding to the given time clock.
-`~ 2172833 A programmable waiting period preceding the output of the first charge pulse which is fed in during the first initi~li7:~tion of the subscriber switch-in equipment is required in order to take into account two di~renl meanings of the off-hook signal.
1) The base station is connected with the communications network via direct-dialing lines.
These may be analog exchange lines for direct-dialing operation (IKZ - pulse-signal process, DID - direct inward dialing, analog tie line or interconnection E&M) or digital direct dialing systems (SO - ISDN base connection, S2M - ISDN primary multiplex connection, PCM/E&M-configured, MFC/R2, etc.). In such cases, an off-hook signalis given by the communications network when subscriber B picks up and the first charge pulses can be sent without a delay.
2) Provided the base station is connected with a local exchange via subscriber connection lines (HKZ - main connection signal process), no off-hook signal is given when subscriber B picks up. In this case, the base station assesses the time at which it carries out the seizing of the trunk (subscriber connection line) to the local exchange as an off-hook signal. In this case, a waiting period can be programmed in the subscriber switch-in equipment between the of ~hook signal and the output of the first charge pulse, which waiting period takes into account the total time between the seizing of a trunk to the communications network and the time that subscriber B picks up.
The charge pulses can be sent as 12 kHz or 16 kHz pulses as needed. For this purpose, a prog~an,l,lable sine wave generator is provided, as is conventional, which can be a~ljusted by the controller of the subscriber switch-in equipment to the required frequency and is operated in the start-stop system. The output of the programmable sine wave generator is com1ecled to a SLIC (subscriber line interface circuit) which amplifies the signal and outputs it at the al/b connection of the subscriber switch-in equipment.
The variant to be applied in the respective case is programmed during the first initi~li7~tion of the subscriber switch-in equipment.
-- TE~TR~ r~ 172833 CHMGE DETECTION IN A TELEPHONE NETWORK
The invention is directed to a process for the tr~n~mission of charge i~ nalion to the subscriber access equipment or switch-in equipment and the output of charge pulses at the a/b interface of the subscriber switching equipment in a local communications and ll ~n~ c~ion system which is organized as a local radio cell comprising a central fixed radio site and a plurality of decentralized subscriber switch-in devices and is connected to the public telecommunications network as a local exchange office or as a private branch exchange facility.
A local communications and transmission system ofthis kind is known from WO
94/13112 (or DE 42 20 249 Al).
Further, it is already known from a brochure issued by COMTEL Telefon und Datçntechnik GmbH & Co. KG, Brucker Str. 53, 82205 Gilching b. Munchen, to provide a coin-operated facsimile device and a coin-operated telephone with a charge computer which is integrated in the telephone and which frees the telephone from dependence upon the 16 kHz pulse of the telephone network operating company. Charges are detected either by forming the 16 kHz charge pulse or by calcul~ing the charge units based on the dialed telephone number with the following distinctive characteristics: local call, local area call, domestic call, international call in 3 rate zones, and mobile comrnllnications services, wherein special services (e.g., telegram reception) are blocked and toll-free telephone numbers (110, 112) are taken into account and the charges, inclu(1inz base charges, can be freely progr~mme~
In an arrangement of the type mentioned above, but particularly in a special arrangement known from German Patent Application P 42 20 249, it is difficult under certain operating conditions to transmit charge information to the subscriber's radiotelephone equipment in the radiotelephone system described in this reference and to output this charge information at the a/b interface of the subscriber's radiotelephone equipment as a standard charge pulse for the use of this connec~ed end equipment. The initial situation is such that the standard charge pulse of 12 kHz or 16 kHz cannot be tr~n.cmitted over the radio channel and a substitute signal in the voice band of 300 Hz to 3400 Hz would interfere with the ll~n~ ;on of signals from modems and facsirmile devices.
The object of the present invention is to indicate a procedure whereby it is possible to calculate and detect charges at the location where the call is dialed, also when a radio channel is used.
This object is met according to claim 1 in that a distance zone table which is adapted to the location is stored in the base station of every radio cell and contains the time clock information for charge accounting for the local zone and all communications outside the local zone, and in that the telephone number dialed by a radiotelephone subscriber is automatically compared with the distance zone table during the ongoing communication of the radiotelephone subscriber, the applicable time clock information is obtained and tr~n~mitted to the subscriber switch-in equipment which generates standard charge pulses corresponding to the transmitted time clock and gives out this information at the a/b interfàce.
In this way, the system mentioned above can also easily provide the subscriber with charge information when a radio channel impairs or renders impossible the tr~nsmi~sion of standard charge pulses.
According to a second embodiment form (claim 2) of the process according to the invention, the time clock information is transmitted from the base station in the presence of an off-hook signal at the remote station (the called subscriber or subscriber B has picked up).
Accordingly, as iS customary in most networks, accounting of charges begins only when the other subscriber has answered the call According to a third embodiment form (claim 3) of the process according to the invention, the time clock information is transmitted from the base station in cases when no identification signal is sent from the remote station with the holding or seizing of the trunk to the communic~tions network.
According to a fourth embodiment forn~ of the process according to invention as set forth in claims 1 and 2 (second embodiment form), the subscriber switch-in equipment ~csesses the tr~n~mission of the time clock information simultaneously as an off-hook signal.
Finally, according to a fi~h embodiment form of the process according to the invention as set forth in claims 1 and 3 (third embodiment form), a waitina period car. be programmed in the subscril)er switch-in equipmetlt between reception uf the time clock information and the output of the first charge pulses, this waiting period taking into account, as a lump sum, the period between the tiMe that a trunk to the communications network is seized and the time that subscriber B picks up.
The invention is described more fully with reference to embodiment examples which are shown in the drawings.
Fig. I shows an access tree or search tree of a distance zone table;
Fig. 2 shows a block diagram of the time clocl; transmission arrangement.
As was already mentioned, the initial situation consists in that the standard charge pulse of 12 kHz or 16 kHz cannot be transmitted over the radio channel since its tr~n~mi~.~ion bandwidth is limited to the voice band of 300 Hz to 3400 Hz, a substitute signal in the voice band of 300 Hz to 3400 Hz would interfere with the tr~nsmi~sion of signals from modems and facsimile devices, and a parallel additional transmicsion path (second radio channel) is not available or is not acceptable for reasons of cost.
It is known in the art to use special coin-operated telephones (intelligent pay phones) in cases where charge pulses cannot be transmitted for various reasons. These special pay telephones compare the telephone number dialed by the subscriber with a stored distance zone table and calculate the charoes based on the time clock taken from this table. The disadvantages of this ,urocess consist in that each end apparatus must contain the required hardware and software, that, as a consequence of this, a generally limited dilrerellliation of charges is worked with (the greater the depth of di~ere~ltiation, the greater the location-dependence of the distance zone table and the higher the costs for initial outfitting and for ~pdating in operation), and finally that the process does not offer a solution for the use of convenience telephones by private clients where the call charges are displayed on the basis of charge pulses. A typical e~ample of this solution and of this category of equipment is the COMTEL arrangement mentioned above.
According to the invention, a distance zone table cont~ining the respective charge clock information for all country codes, local codes, and codes for mobile networks and special services, etc. is stored in a radio network of the type mentioned in the introduction (as is described in DE 42 40 249 Al) in the base tation. Since only one table is provided for the entire radio cell, the cost of initial inst~ tion and updating (costs for updating during on-going operation) is low in proportion to the numl)er of subscribers. This enables a greater depth of differentiation of the table and accordingly a more exact accounting of charges than was possible in the processes mentioned above. In addition to coin-operated telephones, all other radio subscribers can also be provided with charge information as a result of the process '- 2172833 described in the following, so that charges can be displayed during the conversation also for private customers using convenience telephones.
The distance zone table is organized as a search tree as is shown in Fig. 1. The search levels 1.1, 1.2, 1.3, etc. correspond to the first, second, and third telephone number dialed, etc.
The search algorithm is the same for all branch points as will be shown in an example. Having arrived at branch point 1.6, the next digit selection is awaited and checked to determine whether or not this digit will require a transition to the next deepest level. If no such transition is required for the next digit, the search is terminated and the numerical value 1.7 allocated to the branch point (time clock informatioll) is valid. If the ne~t digit in the example is a "3", the next point 1.9 is jumped to ~ia the transition 1.8. If the point arrived at, e.g., 1.10, is an end point, the numerical value associated with this point is immediately valid and the search will be termin~ted without having to wait for the next digit to be selected.
Fig. 1 also shows, by way of example, that the local rate is applicable in the first level 1.1 provided the following digit is not "O" or " 1". If the lollo~ing digit is " 1", the call will be "toll-free". Tl1is process enables fast search speeds and the search is interrupted based on the principle of the shortest distance if there is no further transition or no further valid transition.
When a dialing req~lest on the part of tlle subscriber switch-in equipment in the or~ni7~tion channel is detected in the radio network of the type mentioned in the introduction or according to DE 42 40 249 Al, the base station orders the equipment into an unoccupied call channel correspondin~ tv the communications protocol described in the basic patent. The digits dialed by the subscriber (or selected automa~ically by the end equipment) are ~ ed in this call char,nel. The channel compollent group 2.1 associated with this call channel (see ~ig. 2) detects the dialed digi~-s. Two detectors are required for this purpose:
a) A first detector 2. 2 is a modem whose receiver input is com1ected to the output of the channel receiver RX 2.4. The dialed digits transmitted in BCD code by the subscriber switch-in equipment per modeln signal are detected by this detector. This applies to all dialed digits origill2til1g in the memory of the subscribe.r switch-in equipment and from the end equipment with pulse dialinO. The de!ected information is t~ s.~ (ed from the modem 2.2 to the channel controller 2.5. For this purpose, the data output ofthemodem 2.2 is comlected with a data input ofthe channel controller 2.5. The dial digits transmitted by modem are fed to a dual tone transmitter 2.7 by the channel controller 2.5, this dual tone transmitter 2.7 sends a DTMF dial signal which is transmitted to the PCM codec 2.9 via a combiner 2.8. ~uling this process, the channel controller 2.5 opens a switch 2.6 to prevent interference in the DTM~ dialing by the modem signal.
b) A second detector 2.3 is a dual tone receiver (DTR) whose receiver input is connected to the output of the channel receiver 2.~. This detects the dialed digits origin~ting from the end equipment with DTI~qF dialing. The detected information is delivered to the channel controller 2.5 fro:n the DTR 2.3 . For this purpose, the data output of the DTR 2.3 is connected with a data input ofthe channel controller 2.5. During thisprocess, the switch 2.6 is closed by the chamlel controller 2.5 so that these dialed digits are transmitted via a combiner 2.8 to the PCM codec 2.9 without further conversion.
The detected data are transmitted from tlle channel controller 2.5 via a data bus 2.12 to the radio control servel 2.13 whicll condilcts the search in the distance zone table 2.14 for all channel component groups. The search results are transmitted from the FLS 2.13 to the channel controller 2.~.
The search results contain time clock information which is first stored in the channel controller 2.5. As soon as the off-hook signal is received from the PCM codec 2.9 ofthe channel component group 2.1, the time clock information is transmitted from the channel controller 2.5 via the radio channel to the subscriber s~itch-in equipment. For this purpose, a data output of the channel controller 2.5 is colmected with the transmitter input of the modem 2.2. The transmitter output of the modem 2.2 is connected to the input of a combiner 2.10.
The output of the combiner 2.10 is connected to the input of the tr~nsmitter TX 2.1 1 by means of which the modem signal is fed into the tr~ micsion path at this point.
The reception of the time cloclc information is assessed by tlle subscriber switch-in equipment as an off^hook signal. Subsequently, insofar as this optional function is programmed, the polarity reversal is carried out at the a/b connection of the subscriber switch-in equipment. After the expiration of a prograrnmable waiting period, the first charge pulse is generated. The additional charge pulses are generated corresponding to the given time clock.
-`~ 2172833 A programmable waiting period preceding the output of the first charge pulse which is fed in during the first initi~li7:~tion of the subscriber switch-in equipment is required in order to take into account two di~renl meanings of the off-hook signal.
1) The base station is connected with the communications network via direct-dialing lines.
These may be analog exchange lines for direct-dialing operation (IKZ - pulse-signal process, DID - direct inward dialing, analog tie line or interconnection E&M) or digital direct dialing systems (SO - ISDN base connection, S2M - ISDN primary multiplex connection, PCM/E&M-configured, MFC/R2, etc.). In such cases, an off-hook signalis given by the communications network when subscriber B picks up and the first charge pulses can be sent without a delay.
2) Provided the base station is connected with a local exchange via subscriber connection lines (HKZ - main connection signal process), no off-hook signal is given when subscriber B picks up. In this case, the base station assesses the time at which it carries out the seizing of the trunk (subscriber connection line) to the local exchange as an off-hook signal. In this case, a waiting period can be programmed in the subscriber switch-in equipment between the of ~hook signal and the output of the first charge pulse, which waiting period takes into account the total time between the seizing of a trunk to the communications network and the time that subscriber B picks up.
The charge pulses can be sent as 12 kHz or 16 kHz pulses as needed. For this purpose, a prog~an,l,lable sine wave generator is provided, as is conventional, which can be a~ljusted by the controller of the subscriber switch-in equipment to the required frequency and is operated in the start-stop system. The output of the programmable sine wave generator is com1ecled to a SLIC (subscriber line interface circuit) which amplifies the signal and outputs it at the al/b connection of the subscriber switch-in equipment.
The variant to be applied in the respective case is programmed during the first initi~li7~tion of the subscriber switch-in equipment.
Claims (5)
1. Process for the transmission of charge information to the subscriber switch-in equipment and for the output of charge pulses at the a/b interface of the subscriber switch-in equipment in a local communications and transmission system which is organized as a local radio cell comprising a central fixed radio site and a plurality of decentralized subscriber switch-in devices and is connected to the public telecommunications network as a local exchange office or as a private branch exchange facility, characterized in that a distance zone table which is adapted to the location is stored in the base station of every radio cell and contains the time clock information for charge accounting for the local zone and all communications outside the local zone, and in that the telephone number dialed by a radiotelephone subscriber is automatically compared with the distance zone table during the ongoing communication of the radiotelephone subscriber, the applicable time clock information is obtained and transmitted to the subscriber switch-in equipment which generates standard charge pulses corresponding to the transmitted time clock and gives out this information at the a/b interface.
2. Process according to claim 1, characterized in that the time clock information is transmitted from the base station in the presence of an off-hook signal at the remote station (subscriber B
has picked up).
has picked up).
3. Process according to claim 1, characterized in that the time clock information is transmitted from the base station in cases when no off-hook signal is sent from the remote station with the seizing of the trunk to the communications network.
4. Process according to claims 1 and 2, characterized in that the subscriber switch-in equipment assesses the transmission of the time clock information simultaneously as an off-hook signal.
5. Process according to claims 1 and 3, characterized in that a waiting period can be programmed in the subscriber switch-in equipment between the off-hook signal and the output of the first charge pulse, this waiting period taking into account, as a lump sum, the period between the time that a trunk to the communications network is seized and the time that subscriber B picks up.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4426689.8 | 1994-07-28 | ||
| DE19944426689 DE4426689A1 (en) | 1994-07-28 | 1994-07-28 | Billing in a telephone network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2172833A1 true CA2172833A1 (en) | 1996-02-08 |
Family
ID=6524322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002172833A Abandoned CA2172833A1 (en) | 1994-07-28 | 1995-07-12 | Charge recording in a telephone network |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0721723A1 (en) |
| CN (1) | CN1131493A (en) |
| CA (1) | CA2172833A1 (en) |
| CZ (1) | CZ74096A3 (en) |
| DE (1) | DE4426689A1 (en) |
| PL (1) | PL313789A1 (en) |
| SK (1) | SK36696A3 (en) |
| WO (1) | WO1996003832A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2337181B (en) * | 1994-10-25 | 2000-01-12 | Kokusai Denshin Denwa Co Ltd | Communication system having charging unit price information function |
| US5978456A (en) * | 1994-10-25 | 1999-11-02 | Kokusai Denshin Denwa Co., Ltd. | Charging unit price determination/information apparatus and communication system having charging unit price information function |
| FI100498B (en) * | 1995-04-13 | 1997-12-15 | Nokia Telecommunications Oy | A radio system that implements a wireless subscriber interface and a subscriber device |
| FI963142A (en) * | 1996-08-12 | 1998-02-13 | Nokia Mobile Phones Ltd | Method and apparatus for determining tariff in wireless pay phone |
| DE10056523B4 (en) * | 2000-11-15 | 2006-06-01 | Tenovis Gmbh & Co. Kg | A method for generating charge information in a telecommunications network |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5857832A (en) * | 1981-09-30 | 1983-04-06 | Fujitsu Ltd | Relaying system for charging signal |
| US5046085A (en) * | 1990-05-15 | 1991-09-03 | Godsey Randall D | Interfacing system for an international-type pay-telephone |
| DE4240249C1 (en) * | 1992-11-25 | 1994-05-05 | Andreas Hachencerger | Switching device and method for a radio telephony system with the character of a local or branch exchange |
-
1994
- 1994-07-28 DE DE19944426689 patent/DE4426689A1/en not_active Withdrawn
-
1995
- 1995-07-12 CA CA002172833A patent/CA2172833A1/en not_active Abandoned
- 1995-07-12 PL PL95313789A patent/PL313789A1/en unknown
- 1995-07-12 WO PCT/EP1995/002733 patent/WO1996003832A1/en not_active Application Discontinuation
- 1995-07-12 CZ CZ96740A patent/CZ74096A3/en unknown
- 1995-07-12 CN CN 95190703 patent/CN1131493A/en active Pending
- 1995-07-12 EP EP95943997A patent/EP0721723A1/en not_active Withdrawn
- 1995-07-12 SK SK366-96A patent/SK36696A3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN1131493A (en) | 1996-09-18 |
| SK36696A3 (en) | 1996-11-06 |
| CZ74096A3 (en) | 1996-07-17 |
| WO1996003832A1 (en) | 1996-02-08 |
| PL313789A1 (en) | 1996-07-22 |
| EP0721723A1 (en) | 1996-07-17 |
| DE4426689A1 (en) | 1996-02-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 19980713 |