CN1181868A - Method and device for of voice and data multiplexing - Google Patents

Method and device for of voice and data multiplexing Download PDF

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Publication number
CN1181868A
CN1181868A CN 96193316 CN96193316A CN1181868A CN 1181868 A CN1181868 A CN 1181868A CN 96193316 CN96193316 CN 96193316 CN 96193316 A CN96193316 A CN 96193316A CN 1181868 A CN1181868 A CN 1181868A
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Prior art keywords
transmission line
channel
sequence
transmission
data
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Chinese (zh)
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P·布罗姆奎斯特
J·赖曼
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1682—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13034—A/D conversion, code compression/expansion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13174—Data transmission, file transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1322—PBX
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13292—Time division multiplexing, TDM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13332—Broadband, CATV, dynamic bandwidth allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13367—Hierarchical multiplexing, add-drop multiplexing

Abstract

A method and device for multiplexing voice and data information onto at least one transmission line of a first type in a communication system, said method comprising the steps of: dividing the transmission line into a plurality of channels, compressing and/or dividing the voice information into one or more streams, each stream transmitting at a rate corresponding to the transmission capacity of one of the divided channels of the transmission line, dividing the data information into one or more streams, each stream transmitting at a rate corresponding to the transmission capacity of one of the divided channels of the transmission line, and dynamically allocating and deallocating the streams of voice and data information to the channels of said transmission line depending on demand.

Description

The method and apparatus of speech and data multiplexing
The present invention relates generally to the information multiplexing field in the telecommunications, relate to the method for speech and data multiplexing particularly and at the speech and the data multiplexing device that are used for speech and the data multiplexing switch to the transmission line.
Owing to have the increase of the information processor of " network capabilities ", the demand that sends voice signal (for example telephone relation) and data-signal (for example, computer data being transferred to another computer from a computer) by shared telecommunication apparatus is just becoming and is becoming more and more important.General solution is to be that speech (phone) connects so that carry out data communication (that is, the transmission of the data different with speech information) by existing traditional communication link, and uses a kind of communicator that is used for these two kinds of purposes.
But causing, this to provide the problem that effectively to handle the switch of the different kinds of information that is sent.Speech information and data message come down to different and have different transmission characteristics.The latter is because speech information generally can compress and is divided into the part with different importance, and being the individual character institute of understanding message or identification speech must received pith and influence sound quality but can ignore and do not cause the message can not accessible more inessential part.And on the other hand, data message normally its all parts all must be sent out, and wherein any loss all will cause problem.
Thereby basic problem in this respect is how to send different information on one group of given circuit.A possibility is to send data message and speech information on the circuit that separates, and another possibility is to allow the shared circuit of two category informations.
A material circumstance in this respect is also to have dissimilar being used to send the circuit of information in public wide area network (WAN) system.First type circuit (fixed fee type, for example leased line) is collected nontraffic sensitive, thereby can be often available, but this type circuit is very expensive usually, even and have the shortcoming that does not also generate expense in use especially.Second type (by using charge type, for example isdn line) only according to using the generation expense, but have a shortcoming, even the expense of time spent will finally surpass the expense of leased line.
In using the interchanger of speech and the different circuits of data message, first type circuit had both sent speech and had also sent data message.If send speech and data on a circuit, this circuit is divided into each channel so, and specific channel sends data message and remaining channel transmission speech information.Two kinds of systems all this situation may occur, promptly at second type of circuit in use, make type circuit of winning (for example, leased line) uneconomical, because it still has idle transmission capacity.For example, because speech and the transfer of data demand is different this situation may occur.Prepare for speech transmissions if having the circuit of 64kb/s transmission capacity, but only require 32kb/s to satisfy the demands, the capacity of half just might slattern so.
An object of the present invention is to provide a kind of method and apparatus that is used on the transmission line of speech and data message multiplexing to the first type, wherein this method and apparatus guarantees that the best of these circuits uses.
This purpose is the method on the transmission line of first type of speech and data message multiplexing at least one to be reached in communication system by a kind of, and described method comprises the following steps:
-the transmission line that will have a specific transmission capacity is divided into a plurality of channels, and each channel has a specific transmission capacity;
-compression and/or to divide speech information be one or more sequences (stream), each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line;
-dividing data information is one or more sequences, and each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line; With
-distribute and go to distribute speech and data information sequence to the dynamics of channels of described transmission line ground according to demand.
This purpose also realizes that to the switching equipment on the transmission line of at least one first kind this equipment comprises with speech and data message multiplexing by a kind of being used for:
-the first circuit classification apparatus, the transmission line that is used for having specific transmission capacity is divided into a plurality of channels, and each channel has a specific transmission capacity;
-voice compression/classification apparatus, being used for compression and/or dividing speech information is one or more sequences, each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line;
-data classification apparatus, being used for dividing data information is one or more sequences, each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line; With
-sequence allocation device is used for the sequence of distributing and removing to distribute speech and data message to the dynamics of channels ground of described transmission line according to demand.
Because the transmission capacity of the circuit of the first kind is divided into the channel of a plurality of less transmission capacities and dynamically distributes speech and the data message that has been divided into the sequence that is suitable for the Channel Transmission capacity subsequently, might use first type of circuit most effectively, because circuit is flexibly by this in its transmission capacity.Mat uses method and apparatus of the present invention, might at first use the channel of first type of circuit before having to utilize All other routes, promptly before having to use any other circuit, can fill up all channels of first kind circuit.
An importance of the present invention is: dividing first kind circuit is that a plurality of channels, division information are that sequence and the Channel Transmission capacity that makes first type of channel on the circuit adapt to mutually with the transmission rate of information sequence, this feasible any waste that might avoid the transmission capacity of first kind circuit.
According to preferred embodiment, the first kind circuit with specific transmission capacity (Nkb/s) is divided into a plurality of (n) and equates that the channel of transmission capacity (N/n kb/s) and all sequences have the equal speed corresponding to each channel capacity.It is to make the transmission capacity of each channel and the simplest possibility that each information sequence adapts to mutually that such capacity is divided.Therefore, even only remaining a certain capacity (for example on first type of circuit, the channel of a N/n kb/s), have simultaneously more multicapacity () demand for example, 2N/n kb/s, by divide desired capacity for the capacity sequence of the channel of corresponding first type of circuit (for example, 2), can distribute a sequence to the residue channel on first type of circuit, and another sequence must be placed on another circuit (for example, second type of circuit).Use first type of circuit to come capacity fill by this way.And, by using dynamic assignment, might give a channel on the first kind circuit with second sequence allocation in moment that a channel becomes available (that is, a former occupied channel becomes available).Like this, will be reduced to the use of second type of circuit minimum and may the time always at the circuit that uses first type.
Fig. 1 represents an embodiment according to switching equipment of the present invention;
Fig. 2 represents the internal structure of sequence allocation device;
Fig. 3 represents second embodiment according to switching equipment of the present invention;
Fig. 4 represents the illustrative examples of the transmission line that is divided;
Fig. 5 represents the flow chart according to multiplexing method of the present invention.
Fig. 5 represents to be used to illustrate the flow chart according to multiplexing method of the present invention.In step S1, dividing first type of transmission line is a plurality of channels, and each channel has a specific transmission capacity.Then, in step S2, the transmission demand of specified data and voice messaging.In step S3, speech information is divided and/or is compressed to sequence, thereby the transmission rate of sequence is suitable for the transmission capacity of the channel that transmission line is divided into.In step S4, data message is divided into the sequence that has corresponding to the transmission rate of the Channel Transmission capacity of dividing similarly.At last, in step S5, each sequence is dynamically allocated to channel.
Again the assembly of information on receiving terminal (speech and data) is finished in a similar manner, and promptly the sequence on each channel is become data or speech information sequence corresponding to those sequences that are fed to the switch on transmitting terminal by assembly again (with may be decompressed).Then, export these sequences by the switch on the receiving terminal, as schematically shown in Figure 3.
According to the present invention, at least one the first types circuit is divided into a plurality of channels, and wherein each channel has a specific transmission capacity.As mentioned above, vital point of the present invention is to make Channel Transmission capacity and the coadaptation mutually of information sequence transmission rate.Generally speaking, thus channel needn't have equal transmission capacity.Only importantly sequence transmission speed and the coadaptation mutually of Channel Transmission capacity.
This can be that what how to divide is how to be divided into sequence to finish with writing down input information simultaneously by the record transmission line generally.The main points of this adaptation are to make the transmission rate of sequence to adjust to the transmission capacity of idle channel then.An example of this respect be the transmission line that will have the transmission capacity of Nkb/s be divided into have Nn1/p kb/s respectively, Nn2/p kbs ..., Nnk/p kb/s transmission capacity a plurality of channels (for example, k channel, k is an integer), wherein n1 ..., nk and P be integer and n1+n2+ ... + nk=P.Then, input information (data and speech) be divided into have Nn1/p kb/s respectively, Nn2/p kb/s ..., Nnk/p kb/s transmission rate sequence, and these sequences are assigned to the respective channel with suitable transmission capacity.
But for all channels, identical transmission capacity (is n1=n2=...=nk=1, and k=P) selection be preferable and useful because it is to obtain above-mentioned the simplest and coadapted effective means.Therefore, the following examples all will be described with the system form of channel with equal transmission capacity, but as explained above, the present invention is not restricted to this.
Fig. 1 represents one embodiment of the present of invention, the figure shows to be used for the switching equipment 1 of exchange message between transmission line 10,20 and 30,40 respectively.Circuit 30 is the transmission lines that are used to transmit speech information, and circuit 40 is the transmission lines that are used for data information.Circuit 10 is the transmission lines such as the first kind of leased line.The circuit 10 of the first kind is the fixed fee circuit, and promptly it is operational consistently for the user, and circuit fee is irrelevant through this circuit transmission with how many data.The transmission line 20 of second type is by the circuit that uses charge, such as isdn line.This means that expense only just generates and these expenses depend on through this circuit to transmit how many data when circuit uses.
Should note: the term in this specification " transmission line " meaning is meant the transmission path of any kind that is used to communicate by letter with specific transmission rate.Therefore, " transmission line " of Miao Shuing can be physical circuit herein, but they are not limited to so.For example, all " circuits " can be the parts of wall scroll optical cable.
Should note: for simplicity, Fig. 1 only represents 4 circuits 10,20,30,40.Actual switching system will use a large amount of transmission lines naturally, wherein 4 circuits 10,20,30,40 represent separately many circuit of given type.
Circuit 10 and 20 has given transmission capacity N kb/s.General transmission capacity is 64kb/s.Two kinds of circuits 10,20 of first and second type can have different transmission capacities, but preferably have the equal circuit of transmission capacity of two circuits.Circuit 10 is linked the circuit classification apparatus 11 that is used for transmission line 10 is divided into a plurality of channels that all have the identical traffic capacity.For example, the circuit with 64 kb/s is divided into four equal channels with 16 kb/s.This schematically is illustrated among Fig. 4.The method that circuit is divided into different channels can be any known method, such as TDMA (time division multiple access).
Should note: will be preserved for sending the state information of connection by dividing one of each channel produced, such as the D channel.This is illustrated by the rightmost channel among Fig. 4.Data can send by the ISDND-channel or through data path.
Voice lines 30 is linked a voice compression/classification apparatus 31.For example can import with different rates according to the communication device types of using from the input voice data of telephone set.Voice compression/classification apparatus is divided into each data sequence to these input data.Finishing to divide makes the speed of each data sequence be applicable to the transmission capacity of the channel that circuit classification apparatus 11 is divided into transmission line 10.According to the example that provides above, voice compression/classification apparatus 31 will be imported speech information and be divided into the information sequence with 16kb/s speed.According to the present invention, device 31 not only can be divided into different data sequences with the input speech information, also can compress the speech information of transmission.Preferably, the speech information that device 31 is divided and compression is imported, compression will cause the more effective use of transmission line subsequently.
Data circuit 40 is linked data classification apparatus 41.Data classification apparatus 41 is divided into each sequence with input data information.Each information sequence has the speed of the transmission capacity that is adapted to those channels that circuit classification apparatus 11 is divided into transmission line 10.Data are carried out assembly again on the other end.
Should note: the transmission rate of information flow is adapted to the transmission capacity of channel.This does not mean that transmission rate must equal transmission capacity, but they are that what to equate is preferable.
Because sending the division of information and the compression of the information of transmission all is to know in this area, and information divides with the accurate technology of handling and has nothing to do with the present invention, so its description is omitted.
Switching equipment 1 also comprises a sequence allocation device 50.This sequence allocation device 50 is linked circuit classification apparatus 11, voice compression/classification apparatus 31 and data classification apparatus 41.This sequence allocation device 50 is the channel that dynamically is assigned to from the sequence of installing 31 and 41 on transmission line 10 or 20.Dynamic assignment is carried out as requested, and promptly only when expression causes connection that transferring queued input new data sequence will look for novelty, sequence allocation device 50 is just determined idle channel and distributed new sequence to that channel subsequently.Whether the process of dynamic assignment makes sequence allocation device 50 will at first determine to have on first type transmission line 10 idle channel available and distribute corresponding sequence to give the idle channel of the transmission line 10 of the first kind subsequently.When only not having channel available on the transmission line 10 of the first kind, sequence allocation device 50 is just distributed to list entries the transmission line 20 of second type.Thereby effective use of the transmission capacity of the transmission line 10 of the above embodiments assurance first kind.
According to a preferred embodiment, switching equipment 1 also comprises the second circuit classification apparatus 21, and it is used for the circuit 20 of second type is divided into the channel of specific quantity.Preferably, circuit 20 also is divided into the channel that each has the transmission capacity the same with the channel of the circuit 10 of the first kind.This has advantage: data information sequence not only is adapted to the circuit channel of the first kind mutually, also is adapted to the channel on the circuit of second type.Thereby also phase coadaptation of the channel of two types of circuits.This makes might more effectively use transmission capacity.
According to another preferred embodiment of the invention, sequence allocation device 50 will preferably distribute the sequence of corresponding data information to give the transmission line 10 of the first kind.This means the at first communication requirement of specified data information of sequence allocation device 50, and the corresponding sequence of distribute data information is given the idle channel of the transmission line 10 of the first kind subsequently.Only after that, Shu Ru speech information sequence is just distributed to the remaining idle channel of transmission line 10 recently.If the channel capacity of transmission line 10 is not enough to use for the speech information of input, the speech information sequence that can not be assigned to the channel of transmission line 10 so will be distributed to the channel of transmission line 20.This overflows function corresponding to one, according to this function, overflows speech information and opens up channel by transmission line 20.
Preferably, if the idle channel in the transmission line 10 can not satisfy the demand of data message channel, then distributor 50 will be redistributed the speech information sequence of distributing to transmission line 10 upper signal channels to the channel on the transmission line 20.This means that the speech information sequence is removed the channel from transmission line 10 and lay equal stress on to be newly assigned to channel on the transmission line 20, so that therefore give the transmission slot milling of the data information sequence on transmission line 10 channels.According to this embodiment, when connection was held foundation, the speech information sequence in the connection of setting up was reallocated.
According to still a further embodiment, sequence allocation device 50 is the channel distribution of transmission line 10 to keep to give a specific quantity that it is believed that the breath transmission and keep a specific quantity that transmits to speech information.Distributor 50 can change the channel quantity that keeps to data information sequence according to the demand of data communication.Distributor 50 for example also compares this quantity to determine for the desired quantity of data communication by the necessary channel quantity of the transmission rate that is calculated as processing requirements subsequently with a predetermined threshold.If determined requirement surpasses threshold requirement, keeping the channel quantity of giving data information sequence so increases.Preferably, this increase will only proceed to a predetermined maximum quantity.This increase can be increase progressively or a step be increased to described maximum quantity.
If determined requested number does not surpass given thresholding, so it is compared with second thresholding, and if it drop on below this second thresholding, keep channel quantity minimizing so to data information sequence transmission usefulness.Preferably, this reduces and only to proceed to predetermined minimum number, this minimizing can be successively decrease or a step drop to predetermined minimum number.
In the above embodiments, to preferably cause the speech information sequence from the channel of transmission line 10, to redistribute channel keep for increase in the channel quantity of data information transmission, thereby allow some leeway for the increase in the data message channel to transmission line 20.To preferably cause the speech information sequence from the channel of transmission line 20, to redistribute channel keep for minimizing in the channel quantity of data information transfer, if the channel of transmission line 20 just is used at that time to transmission line 10.
Preferably distribute data information is to the advantage of the circuit channel of the first kind: speech information connect (callings) generally be lack and have a stiff end (on-hook).On the other hand, data message connects that to keep for a long time and therefore unnecessarily to occupy its use usually be by a dial line of minute collecting the charges.Therefore, preferably distribute data information is good to first kind circuit and the route of overflowing voice call of setting up the circuit by second type subsequently.
Fig. 2 provides the more detailed description of sequence allocation device 50.One requires to determine that device 51 is linked data classification apparatus 41 and required necessary sequence quantity to determine the quantity that requires by the computing data information transfer.Require to determine that 51 quantity relevant with requested number of device (for example for handling for the necessary channel quantity of data information transfer) offer comparison means 53, this comparison means 53 is used for the quantity that will require and compares from the thresholding of reading such as the memory cell of ROM or RAM.According to comparative result, number of channel setting device 55 receives a signal and keeps the channel quantity of giving data information transfer to increase or to reduce from comparison means 53, as mentioned above.There is not signal to mean that channel quantity remains unchanged.Number of channel setting device is linked central distributor 52, and this central authorities' distributor 52 receives data sequence separately from voice compression classification apparatus 31 and data classification apparatus 41.Central authorities' distributor distributes, goes to distribute and reallocation to the data sequence according to the quantity that is provided with in the number of channel setting device 55 with according to the allocation table that is stored in the memory cell 54.This allocation table will be separately data sequence and the respective channel on first or second transmission line 10,20 connect.Central authorities' distributor 52 is also linked the Nonvolatile memory devices 56 such as EEPROM, and this device 56 comprises the operation sequence of moving central distributor.Central authorities' distributor 52 preferably comprises the microprocessor (not shown).According to program stored, distribute to each transmission lines 10 and 20 by central distributor 52 from the information sequence of device 41 and 31.Fig. 3 represents another preferred embodiment of the present invention, wherein with prior figures in the same label represent part identical or equivalence.According to this embodiment of the invention, switching equipment 1 is that private branch exchange (PBX) and speech information circuit 30 carry call, and packet switch (PFA) 2 is used for data message is offered data circuit 40.Packet switch 2 comprises CPU201, and this CPU201 is linked circuit 40 so that measure the data volume that is just sending with assessment.At this embodiment, whether CPU201 determines to send the data volume that increases needs new channel, and promptly CPU201 determines described requirement.
Fig. 3 also schematically is illustrated in the arrangement at the receiving terminal place of circuit 10 and 20.Receiver side is the mirror image of transmitter side, represents by being used to represent the chain-dotted line of receiving terminal.
CPU201 is also linked sequence allocation device 50 by circuit 210.Thereby it can be requiring information to offer sequence allocation device 50.Perhaps, CPU201 also can determine the necessary number of channel and send subsequently to ask sequence allocation device 50 accordingly.In two kinds of situations, the sequence allocation device 50 that wherein preferably also includes the microprocessor (not shown) can be handled this requirement or solicited message so that correspondingly dynamically distribute new sequence to idle channel subsequently.Therefore, in this embodiment, transfer of data requires to handle and will be shared between switching equipment 1 (sequence allocation device 50) and packet switch 2 (CPU201).
Multiplexing method among the top embodiment is basically: PBX1 is divided into a plurality of channels with the transmission line of the first kind, and its each channel has a specific transmission capacity, and one of them channel is only kept the usefulness that only supplies data service.Packet switch 2 is determined the data service on outlet line 40 then, and sends the request that a request more is used for the channel of sequence of data channels to PBX1 when the data service that detects surpasses a predetermined restriction.PBX1 receives solicited message and detects the request whether call is arranged simultaneously.Then, according to desired transmission to data and speech information, distributor 50 is to each dynamics of channels ground distribution and go distribute data and speech information sequence.
At another embodiment according to top embodiment, to the distribution of each sequence of particular channel be with previous embodiment in carry out the samely, be about to each sequence and preferentially distribute to the circuit (for example leased line) of the first kind, and the sequence relevant with data message then preferentially distributed to the circuit of the first kind, the speech sequence that to overflow simultaneously is through another circuit, for example the second type circuit as the isdn line and set up route.

Claims (21)

  1. One kind in communication system with speech and the data message multiplexing method to the transmission line of at least one first kind, may further comprise the steps:
    The transmission line that division has specific transmission capacity is a plurality of channels, and each channel has a specific transmission capacity;
    Compression and/or to divide speech information be one or more sequences, each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line;
    Dividing data information is one or more sequences, and each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line; With
    Distribute and go to distribute speech and data information sequence to the dynamics of channels of described transmission line ground according to demand.
  2. 2. according to the method for claim 1, it is characterized in that:
    The transmission line of the described first kind is divided into the channel that all has the identical traffic capacity, and described sequence all has the single transmission rate corresponding to described identical traffic capacity.
  3. 3. according to the method for claim 1, it is characterized in that:
    Provide the transmission line of at least one the second types and according to demand dynamically to the channel allocation of the described transmission line of first and second type with go to distribute speech and data information sequence, thereby make information sequence be assigned to the idle channel on the first kind circuit, and just information sequence is assigned to the circuit of second type when only on first kind circuit, not having operational channel subsequently.
  4. 4. according to the method for claim 3, it is characterized in that:
    The described second type transfers circuit is divided into a plurality of channels, and each channel has the transmission capacity identical with each channel of described first kind transmission line.
  5. 5. according to the method for claim 1, it is characterized in that:
    Preferentially distribute the transmission line of described data information sequence than described speech information sequence to the described first kind.
  6. 6. according to the method for claim 3, it is characterized in that:
    The transmission line of the described first kind is that leased line and the described second type transfers circuit are isdn lines.
  7. 7. according to the method for claim 2, it is characterized in that:
    The transmission line of the described first kind has the capacity of 64kb/s, and it is divided into 4 channels, and each channel has the transmission capacity of 16kb/s.
  8. 8. according to the method for claim 1, it is characterized in that:
    -number is set represents that how many channels in the described first kind transmission line are used to transmit the sequence corresponding to data message;
    -when the requirement of transfer of data is scheduled to first thresholding above one, increase described number; With
    -under transfer of data requires to drop on predetermined second thresholding time, reduce described number.
  9. 9. method according to Claim 8 is characterized in that:
    The described minimizing that the described increase of carrying out described number is performed until a predetermined threshold limit value and carries out described number is performed until a predetermined minimum limit value.
  10. 10. method according to Claim 8 is characterized in that:
    When described number increases, from first kind transmission line, be re-assigned to the transmission line of second type corresponding to the sequence of speech information.
  11. 11. one kind is used for speech and the data message multiplexing switching equipment to the transmission line of at least one first kind is comprised:
    The first circuit classification apparatus, the transmission line that is used for having specific transmission capacity is divided into a plurality of channels, and each channel has a specific transmission capacity;
    Voice compression/classification apparatus, being used for compression and/or dividing speech information is one or more sequences, each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line;
    The data classification apparatus, being used for dividing data information is one or more sequences, each sequence is sent out with the speed corresponding to the transmission capacity of one of channel of the division of transmission line; With
    The sequence allocation device is used for the sequence of distributing and removing to distribute speech and data message to the dynamics of channels ground of described transmission line according to demand.
  12. 12. the switching equipment according to claim 11 is characterized in that:
    The described transmission line that the described first circuit classification apparatus is divided the first kind is for all having the channel of identical traffic capacity, and described data classification apparatus all has the sequence corresponding to the single transmission rate of described identical traffic capacity with described voice compression/classification apparatus generation.
  13. 13. the switching equipment according to claim 11 is characterized in that:
    The transmission line of second type is provided, and described sequence allocation device is according to demand dynamically to the channel allocation of the described transmission line of first and second type and the sequence of removing to distribute speech and data message, described sequence allocation device is designed to monitor the channel allocation of the transmission line of the first kind, and just distribute when only on first kind circuit, idle channel being arranged new sequence to give channel on the first kind transmission line, thereby make the channel that just uses the second type circuit when only on first kind circuit, not having idle channel available.
  14. 14. the switching equipment according to claim 13 is characterized in that:
    The second circuit classification apparatus is designed to the described second class transmission line is divided into a plurality of channels, and its each channel has the identical transmission capacity of each channel with the described transmission line of the first kind.
  15. 15. the switching equipment according to claim 11 is characterized in that:
    Described sequence allocation device has the high priority data stage arrangement, is used for distributing the idle channel of all sequences of relevant data message to the transmission line of the first kind in the sequence of distributing relevant speech information before the idle channel of first kind transmission line.
  16. 16. the switching equipment according to claim 11 is characterized in that:
    The transmission line of the described first kind is a leased line, and the transmission line of described second type is an isdn line.
  17. 17. the switching equipment according to claim 12 is characterized in that:
    The transmission line of the described first kind has the transmission capacity of 64kb/s, and it is divided into 4 channels, and each channel has the transmission capacity of 16kb/s.
  18. 18. the switching equipment according to claim 11 is characterized in that:
    Described sequence allocation device comprises:
    -number of channel setting device is used to be provided with a number, represents to have in the transmission line of the described first kind how many channel allocation to give sequence corresponding to data message;
    -require to determine device, be used for the quantity of specified data transmission request message, and distribute a quantity to give the quantity of described requirement;
    -comparison means is used for described quantity and predetermined threshold are compared;
    -wherein said number of channel setting device is designed to: increase described number and reduce described number when following when described quantity drops on second thresholding when described quantity surpasses first thresholding.
  19. 19. the switching equipment according to claim 18 is characterized in that:
    Described number of channel setting device is designed to only described number is increased to a predetermined threshold limit value always and only described number be reduced to a predetermined minimum limit value always.
  20. 20. the switching equipment according to claim 18 is characterized in that:
    Described sequence allocation device is designed to: when described number of channel setting device increase described when several, redistribute with from the transmission line of the relevant sequence of the speech information of first kind transmission line to second type.
  21. 21. the switching equipment according to claim 11 is characterized in that:
    Described switching equipment is comprised in the private branch exchange, and a packet switch is provided, and is used for supplying with data message to described private branch exchange.
CN 96193316 1995-12-29 1996-12-20 Method and device for of voice and data multiplexing Pending CN1181868A (en)

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DE1995149126 DE19549126C1 (en) 1995-12-29 1995-12-29 Method and device for multiplexing voice and data
DE19549126.2 1995-12-29

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SE510974C3 (en) * 1996-10-01 1999-08-23 Ericsson Telefon Ab L M Subscriber voxel telecommunication systems and procedures for dynamically allocating voice and data channels
DE19730621A1 (en) * 1997-07-17 1999-01-21 Alsthom Cge Alcatel Method for transmitting data on an ISDN connection line, as well as line termination unit, switching center, network termination unit and data terminal therefor
GB2332602B (en) * 1997-12-22 2000-03-08 Lsi Logic Corp Improvements relating to multidirectional communication systems
US6052391A (en) * 1998-02-27 2000-04-18 Lucent Technologies Inc. Dynamic assignment of subrate voice channels in telecommunication networks
DE19811518A1 (en) * 1998-03-17 1999-09-23 Bosch Gmbh Robert Device for the transmission of voice signals and / or fax signals

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DE3527329A1 (en) * 1985-07-31 1987-02-05 Philips Patentverwaltung DIGITAL RADIO TRANSMISSION SYSTEM WITH VARIABLE TIME SLOT DURATION OF TIME SLOTS IN TIME MULTIPLEX FRAME
JPH0334642A (en) * 1989-06-30 1991-02-14 Hitachi Ltd Line connection system
US5282207A (en) * 1991-03-28 1994-01-25 Sprint International Communications Corp. Frame compression in integrated services networks
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NO973890D0 (en) 1997-08-25
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