CN1111894A - Connection method of communication path between a main station exchange and remote switching devices - Google Patents
Connection method of communication path between a main station exchange and remote switching devices Download PDFInfo
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- CN1111894A CN1111894A CN 94119844 CN94119844A CN1111894A CN 1111894 A CN1111894 A CN 1111894A CN 94119844 CN94119844 CN 94119844 CN 94119844 A CN94119844 A CN 94119844A CN 1111894 A CN1111894 A CN 1111894A
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Abstract
A communication channel connction method of multiple remote swichboard and main swiching station. Improved level of communication services is ensured in case of small number of channels communicating with remote switchboards due to reduced number of interlocks in main switching station. In addition, use is made of virtual connecting channels to gain improved efficiency of communication channels and increased number of serviceable channels, remote switchboard channel is connected to conflicting channel of spatial switchboard of main switching station without introducing additional switching device due to organizing virtual connecting channel and using repeated search of communication channel.
Description
The present invention relates to the method for attachment of communication path between a main website switch and some remote switchings, more specifically say, relate to the method for attachment of communication path between a host exchange and remote switching, this method can be effectively between a remote switching and host exchange, or between each remote switching, connect communication path.
In general, remote switching and a host exchange are to be connected and to operate according to form shown in Figure 1.In Fig. 1, each remote switching RS
1-RSn comprises user interface part 1, time division switch 2, inferior public passage (sub-highway) 3 and link interface portion 4.Each remote switching is away from the host exchange setting and hold a spot of user SCa.Host exchange comprises that a plurality of companies change module CM
1-CMn, space switching device SDS and a plurality of user's link block SCM
1-SCMn, constitute between the user SCa of each far-end switch, each user's link block SCM
1Between the user SCb of-SCMn and each user SCa and SCb between communication path.
Remote switching RS
1The user interface part 1 of-RSn shifts the signal that applies from user SCa to time-division switch 2 one sides with shift the signal that applies from time division switch 2 to user SCa one side.The communication path that time division switch 2 connects between each user SCa, or connect from the calling of host exchange to user SCa one side.The signal that inferior public passage 3 high speed transfer send and receive between time division switch 2 and link interface portion 4.Link interface portion 4 is according to one T(ITO-T of International Telecommunications Union) a suggestion, have the E1 link that communication path with host exchange is provided based on T1.
Each link block CM of host exchange
1-CMn comprises link interface portion 5, inferior public passage 6 and public passage speed conversion device 7.Link interface portion 5 provides and remote switching RS according to the suggestion of the TTU-T link based on T1 or E1
1The communication path of-RSn.The speech data that the high speed of inferior public passage 6 applies link interface portion 5 is transferred to public passage speed conversion device 7 and the speech data that public passage speed conversion 7 applies is transferred to link interface portion 5 one sides.Public passage speed conversion device 7 will be transformed to parallel data by the serial speech data that inferior altogether public passage 6 provides and shift this parallel data to space switching device SDS one side with will be transformed to serial data from the parallel data that space switching device SDS provides and export this serial data to inferior public passage 6 one sides.In addition, each user's link block SCM
1-SCMn comprises time division switch 8 and user interface part 9.User interface part 9 connects a plurality of user SCb, and forms the communication path between each the user SCb that is connected to user interface part 9.Space switching device SDS is according to passing through link block CM
1-CMn and user's link block SCM
1The call request that-SCMn applies forms the communication path between user SCa and the SCb.
Remote switching RS
1-RSn is away from the host exchange setting, holds a small amount of communication channel and operates according to the time-division switching method.Host exchange holds the mass communication channel and operates according to space switching method and time-division switching.Therefore, require coalignment to be used for connecting each remote switching RS
1Communication channel between-RSn and the host exchange.Usually, public passage speed conversion device 7 is used as coalignment.Public passage speed conversion device 7 is included in the host exchange, will be by link interface portion 5 and time public passage 6 from each far-end switch RS
1The 2.048kbps serial speech data of maximum 32 public passage channels (each time public passage holds 32 channels) that-RSn applies is transformed to the parallel voice data of 8.192kbps.Provide 8.192kbps parallel voice data to space switching device SDS one side, the 8.192kbps parallel voice data that provide from space switching device SDS with conversion are 2.048kbps serial speech data, by maximum 32 highways (each time highway holds 32 channels) and link interface portion 5 2.048kbps serial speech data are provided to each far-end switch RS
1-RSn one side.
As shown in Figure 2, the conventional public passage speed conversion device 7 that is used to connect remote switching and host exchange comprises: multiplex circuit 10, input time buffer 20, parallel data output 30, address production electric circuit 40 and 50, demultiplexing circuit 60, output time buffer 70, data buffer 80 and 90, data selector 100 and data input unit 110 and 120.The multiplex circuit 10 multiplexing 2.048kbps serial datas that provide from maximum 32 public passage channels by far-end switch and link interface portion 5, conversion 2.048kbps serial data is 8.192kbps 8 Bit datas and exports 8.192kbps 8 Bit datas to buffer 20 1 sides input time.Input time, buffer 20 comprised a dual-ported memory, the data that reception provides from multiplex circuit 10, write down this data according to the data record address that provides from address production electric circuit 10, with according to the address data output that provides from address production electric circuit 40, the data of exporting this record with the speed of 9.192kbps are to parallel data output 30.Parallel data output 30 is added to 1 bit parity bit and 1 bit channel significance bit from input time 8 bit speech datas that buffer 20 provides, this speech data level of conversion is that level and the output that space switching device SDS can handle is arrived space switching device SDS one side through the data of conversion.Address production electric circuit 40 produces the data record address, be used for the data record that will provide from multiplex circuit 10 to buffer 20 input time, when data when buffer 20 is transferred to parallel data output 30 from input time, by the address data output that regularly produces according to I/O, provide these data to buffer 20 1 sides input time. Data input unit 110 and 120 conversion are the level that can handle public passage speed conversion device 7 from the level of the 10 bit parallel data that duplexing space switching device SDS provides, from the 10 bit parallel data that receive, isolate 1 bit parity bit and 1 bit channel significance bit and export 8 bit speech datas to data buffer 80 and 90 1 sides.At this moment, the channel significant bit that data input unit 110 and 120 transfers separate is used to check mistake to data selector 100 1 sides with the parity bits of being separated.Whether data selector is the channel significant bit according to produces enabling signal or inhibit signal, startup that output is produced or inhibit signal are to data buffer 80 and 90 1 sides, at this moment, enabling signal be transferred to data buffer 80 and 90 one of them, inhibit signal is transferred to wherein another of data buffer 80 and 90. Data buffer 80 and 90 only is activated and exports the speech data that provides from data input unit 110 and 120 to output time buffer 70 1 sides receiving under the enabling signal situation provide from data selector 100.Output time buffer 70 comprises a dual-ported memory, the speech data that provides from one of data buffer 80 and 90 is provided according to the data record address that provides from address production electric circuit 50, with according to the address data output that provides from address production electric circuit 50, with the speech data of 8.192kbps speed output record to demultiplexing circuit 60 1 sides.The 8.192kbps parallel voice data that the demultiplexing circuit provides from output time buffer 70 than demultiplexing, with this parallel data of conversion be 2.048kbps serial speech data and by time public passage and 5 outputs of link interface portion through the serial data of conversion to remote switching RS
1-RSn one side.
Above-mentioned transformation system can connect maximum 32 public passages between public passage speed conversion device 7 and link interface portion 5, and connects 1024 channels between public passage speed conversion device 7 and space switching device SDS.For example, under inferior public passage that can hold 32 channels only is used to situation between link interface portion 5 and the public passage speed conversion device 7, between public passage speed conversion device 7 and space switching device SDS, connect as shown in Figure 3 and operate 1024 channels, if from remote switching RS
1The speech data of-RSn is provided to public passage speed conversion device 7, input time, buffer 20 write down the speech data that provides by multiplex circuit 10 according to the data record address of address production electric circuit 40, and the speech data of 32 channels is sequentially recorded between the 1-32 of address and input buffer 20 arrives space switching device SDS according to the data of sequentially exporting record from the address data output of address production electric circuit 40.In addition, if the speech data from space switching device SDS is provided for public speed conversion device 7, output time buffer 70 according to the address 1-32 of address production electric circuit 50 sequentially write down this speech data and demultiplexing circuit 60 demultiplexings from the data of the speech data of output time buffer 70 outputs and this demultiplexing of output to remote switching RS
1-RSn.
At remote switching RS
1Under the situation that only a part of communication channel is utilized among the whole available communication channel of-RSn, when existing from remote switching RS
1When-RSn required to call out the call connection request that connects to the space switching device SDS of host exchange, because remote switching must be connected on the channel of space switching device SDS, this channel equaled far-end switch RS
1-RSn must connect the channel that is used to send data to public passage speed conversion device 7, is idle although many channels are arranged, and this channel equals remote switching RS
1-RSn must be connected to the channel address of space switching device SDS channel, if this space switching device SDS connects remote switching RS for other users utilize same channel
1Channel block then appears in-RSn, therefore, because space switching device SDS can not be provided to remote switching RS
1The communication path of-RSn is so have the shortcoming that available channel efficient reduces.
The objective of the invention is between each remote switching and host exchange, to provide the method for attachment of communication path, the communication path that this method provides utilizes another one to have the address corresponding channel different with the channel that is used to send data at this remote switching and sets up under the situation of communication path, can transmit and receive data, each available channel of space switching device SDS by using host exchange and according to 1024 fixing channel regions of space switching device SDS one side of many channel distribution host exchanges of remote switching with form the communication path zone of a plurality of repetitions.Do not limit the allocated channel capacity of remote switching.
To achieve these goals, may further comprise the steps according to the communication path method of attachment between a remote switching of the present invention and the host exchange, all communication channels of space switching device one side by dividing host exchange are that the regulation communication channel capacity of remote switching one side is divided into several portions and distributes a plurality of communication channels to seek the district, the definite a certain channel of sequentially seeking the communication channel of district's regulation is idle condition or is not, this channel has the appropriate address corresponding to space switching device one side of the host exchange of the designated communication channel of remote switching one side, if specifying each communication channel all hurries, the district is sought to the next one by mobile searching district, seek the idle condition channel of switch space switching device one side, by the idle condition channel of searching, distribute this idle condition channel to give the communication channel of remote switching one side corresponding to space switching device one side of the host exchange of the communication channel of remote switching one side.
To achieve these goals, method of attachment according to communication path between remote switching of a preferred embodiment of the present invention and the host exchange may further comprise the steps, all communication channels of space switching device one side of utilization division host exchange form a plurality of virtual paths district for a plurality of parts of some designated communication channel of remote switching one side by each designated communication channel of duplicating remote switching one side, the state of each communication channel of space switching device one side of search host exchange and remote switching one side are corresponding to the state of each communication channel in the virtual path district of each communication channel of appointment, and connection is corresponding to the channel of the idle condition of space switching device one side of the host exchange of an idle condition channel in virtual path district.
To achieve these goals, the method of attachment of communication path between a remote switching and host exchange according to another preferred embodiment of the present invention may further comprise the steps, all communication channels of space switching device one side of utilization division host exchange form a plurality of virtual paths district for the several portions of some designated communication channel of remote switching one side by each designated communication channel of duplicating remote switching one side, order according to the virtual path district distributes the communication channel of space switching device one side of host exchange to arrive the virtual path district by rotating a channel, and the communication channel that connects space switching device one side of the host exchange of distributing to the virtual path district is the communication channel of idle condition to corresponding remote switching one side.
As mentioned above, when connecting remote switching and host exchange under less than the chainlet path channels capacity situation of maximum connection capacity, by overcome the channel block that produces in host exchange, the present invention can keep the excellent communications service.In addition, by the not connection communication path between the respective channels at the space switching device of the finite chain path channels of remote switching and host exchange, do not need to increase new switch, by setting up a virtual path channel and introducing multiplexed communications path search notion, the present invention sets up a virtual path channel and can improve the channel efficiency of communication channel and expand available channel.
Above-mentioned purpose of the present invention and advantage will be by becoming more clear with reference to each accompanying drawing to its detailed description of preferred embodiment, wherein:
Fig. 1 is the block diagram that connects between expression host exchange and the remote switching.
Fig. 2 is the block diagram of the HW highway speed conversion device of a kind of routine of expression.
Fig. 3 is the method for attachment that is used to illustrate a communication path between a conventional remote switching and the host exchange.
Fig. 4 is used to illustrate according to the direct multiplexed communications path search method between a remote switching and main website switch of the present invention.
Fig. 5 is used to illustrate according to the empty multiplexed communications path search method between a remote switching and host exchange of the present invention.
Fig. 6 is the method for attachment that is used to illustrate transmit the next empty communication path of data conditions to a remote switching from a host exchange.
Fig. 7 is the method for attachment that is used to illustrate transmit the next empty communication path of data conditions to a remote switching from a host exchange.
Fig. 8 is the block diagram that is applied to a kind of public passage speed conversion device of the present invention.
Fig. 9 A-9C is the flow chart that is used for illustrating the idle channel searching operation of the processor in the space switching device that is included in host exchange.
As shown in Figure 8, the applied public passage speed conversion of the present invention device 130 comprises: multiplex circuit 140, input time buffer 150, parallel data output 160, address production electric circuit 180 and 190, demultiplexing circuit 210, output time buffer 220, data buffer 230 and 240, data input unit 260 and 270, virtual region specified portions 130 and 200 and efficient channel discriminator 250.Multiplex circuit 140 is multiplexing from remote switching RS
1The 2.048kbps speech data that the serial of-RSn by maximum 32 time public passages provides, conversion is 8.192kbps 8 Bit datas and output through the data of conversion to buffer 150 input time through multiplexing data.Input time, buffer 150 comprised a dual-ported memory, according to the data record address that provides from address production electric circuit 190, the data that record provides from multiplexer 140, after this, according to providing address data output from address production electric circuit 190, the output recorded data is to parallel data output 160 1 sides.Parallel data output 160 increases by 1 bit parity bits and 1 bit channel significance bit to input time 8 Bit datas that buffer 150 provides, the level of these data of conversion is that level and the data behind the output transform that a space switching device SDS can handle arrive space switching device SDS. Data input unit 260 and 270 conversion are the level that public passage speed conversion device 130 can be handled from duplexing space switching device SDS level that provide and line number, output is removed 8 Bit datas of 1 bit parity bit and 1 bit channel significance bit to data buffer 230 and 240, simultaneously the delivery channel significant bit is to efficient channel discriminator 250 1 sides with utilize the data and the mistake of parity bits inspection reception.Efficient channel discriminator 250 identification channel significant bits and export a record controls signal are so that only be recorded in the efficient channel data in the output time buffer 220.Output time buffer 220 comprises a dual-ported memory, according to the record controls signal that provides from efficient channel discriminator 250, from the data that data buffer 230 and 240 provides, only select to comprise the data of efficient channel indication bit, data according to the data record address record selection that produces part 180 transmissions from the address, after this, send these record data to demultiplexing circuit 210 sides according to the address data output that sends from address production electric circuit 180.Virtual region indicating section 170 and 200 is set up a communication path in advance, so that can be appointed as remote switching RS
1The communication path of an appointment in maximum 1025 channel regions of the communication channel of-RSn is corresponding to whole communication path zone, by in a plurality of virtual paths zone, sequentially seeking a pair of idle condition channel that has an identical address, with by making a plurality of virtual paths zone have the identical size of join domain with the designated communication path of 1024 channel regions, seeking remote switching RS
1Specifying this channel under the situation of the idle channel between-RSn and the space switching device SDS is communication channel.The address output state information that address production electric circuit 180 and 190 provides according to virtual region indicating section 170 and 200 is exported the address of a variation respectively to input time buffer 150 sides and output time buffer 220.
In the present invention, the space switching device SDS at host exchange connects towards remote switching RS
1Under the situation of the communication path of-RSn, such connection that this communication path can be as shown in Figure 4.For example, at remote switching RS
1The communication path capacity of the link interface portion of using among-the RSn is under the situation of 32 channels, corresponding to remote switching RS
1The communication path join domain of the public passage speed conversion device 130 of-RSn is assigned to the zone of address 1 to 32, seek the size in zone with the communication path of the space switching device SDS of host exchange and set 32 channels, therefore, with the whole area dividing of 1024 channels is that 32 communication paths are sought the zone and divided communication path and seek the zone and be the 1-32 channel, the 33-64 channel,, the 993-1024 channel.When space switching device SDS for far-end switch RS
1When-RSn communicates the path search operation, space switching device SDS is to comprise the first area of address 1-32, the second area that comprises address 33-64 ... sequentially carry out idle channel with the order in the 3rd No.12 District territory that comprises address 993-1024 and seek operation.Simultaneously, space switching device SDS will be as remote switching RS
1The channel status (busy condition, idle condition) of the appointed area of the communication channel of-RSn (1-32 channel) compares according to the order of the address state with its first area (1-32 channel), determine to send and to receive/from remote switching RS
1-RSn's, whether the channel with an identical address is idle condition, if determine that this channel is an idle condition, has then finished the idle channel that connects communication path and has sought operation.But, all be confirmed as busy condition if having every channel of appropriate address, then space switching device SDS moves its communication path and seeks the zone to second area (33-64 channel), with remote switching RS
1The communication path zone of-RSn (1-32 channel) is compared with its second area and is determined whether its channel of appropriate address is idle condition.Simultaneously, at this channel is under the situation of busy condition, space switching device SDS sequentially moves its communication path searching zone to next zone, and the executive communication path search is operated and sought communication path continuously till the channel that detects idle condition with identical method.But, if do not detect the channel of idle condition,, it seeks idle channel even moving to 32 zones, then space switching device SDS carries out the channel block operation.
Fig. 5 is used to illustrate the virtual multiplex communication path search method according to host exchange of the present invention.The difference of this method shown in Fig. 5 and top embodiment is: public passage speed conversion device 130 duplicates as remote switching RS by the order of the channel address channel status with appointed area (1-32 channel)
1The communication path of-RSn 32 times is so that output to space switching device SDS side corresponding to the channel status of space switching device SDS with by the virtual channel state region that makes repetition one to one.When space switching device SDS connects for remote switching RS
1During the communication path of-RSn, seek operation till the method for using narration in the above embodiments detects the channel of its idle condition that identical address is arranged by mobile virtual state zone sequence ground executive communication channel.
Arrive each remote switching RS
1The user SCa of-RSn side require the calling towards space switching device SDS side to connect in case with user's link block SCM
1Under the situation of the user SCb communication of-SCMn, call out connection by having realized in the method shown in Fig. 6.For example, if be used to ask corresponding to each remote switching RS
1The channel address that the calling of public passage speed conversion device 130 sides of-RSn connects is 1, and then the channel of virtual path is expanded to having address 1,33,65,97 ... a plurality of channels of 961,993.Seeking in the middle of each virtual path zone that space switching device SDS is providing from public passage speed conversion device 130 under the situation that is not used in its calling idle channel that connects and the channel that detects an idle condition, space switching device SDS specifies the channel of this idle condition to give communication channel, and connects communication path.In Fig. 6, the channel that space switching device SDS sets address 33 is a communication channel.
At space switching device SDS according to from each user's link block SCM
1The call connection request that the user SCb of-SCMn comes connects the call to each remote switching RS
1Under the situation of the user SCa of-RSn, perhaps according to from remote switching RS
1The calling that the user of-RSn comes connects and connects the call to each switching equipment RS
1The user of-RSn then calls out the method that connects as shown in FIG. 7 and has realized.
Connect remote switching RS at space switching device SDS by host exchange
1Under the situation of the calling the between-RSn, call out the connection method shown in Fig. 6 and 7 of pressing and realize.For example, suppose as remote switching RS
1User SCa when requiring the calling of the user SCa side of other remote switching RSn to connect, corresponding to remote switching RS
1Public passage speed conversion device 130 be to have only channel clear No. 1, and be connected from remote switching RS as space switching device SDS
1When arriving the calling of remote switching RSn side, corresponding public passage speed conversion device 130 is to have only channel clear No. 2.At first, at remote switching RS
1Connect the call under the situation of space switching device SDS side, suppose at space switching device RS
1And connecting 32 channels between the public passage speed conversion device 130, such virtual path zone as shown in Figure 6 is 32 zones.Simultaneously, the channel data in each virtual path zone is because first channel strip of state in each virtual path zone of initial situation expands to 1,33,65,97 respectively ... 961,993, therefore, the communication channel that can be connected with the space switching device has been expanded.And, connect from remote switching RS at space switching device SDS
1Under the situation of the calling of remote switching RSn side, suppose between remote switching and public passage speed conversion device 130, to connect 32 channels that as shown in FIG. 7 such of 32 virtual route zones constitutes.Simultaneously, for preset time of each virtual path zone rotation channel, public passage speed conversion device 130 receives the input data.Therefore, by channel of rotation channel order, second virtual path zone receives the data from space switching device SDS.Promptly, receive first channel data of the second area of space switching device SDS by the second area second channel of virtual region, public passage speed conversion device 130 has the effect that each input data is rotated a channel of second virtual region, and last channel rotates to first channel in virtual path zone.That is, reduce to 1 number of times by the rotation channel order from each its regional number of virtual path zone, public passage speed conversion device 130 receives from the data of space switching device SDS input.By rotating channel order 31 times, the 3rd No.12 District territory of the last item virtual path of public passage speed conversion device 130 receives first channel data in the 3rd No.12 District territory of space switching device SDS by last channel.That is, if space switching device SDS from should be in remote switching RS
1The output of public passage speed conversion device 130 in select first area corresponding to the virtual path of the public passage speed conversion device 130 of remote switching RSn for first channel, the data of first channel then shown in Figure 6 output to first channel, if and space switching device SDS selects the second area of the virtual path of public passage speed conversion device 130, first channel data then shown in Figure 6 outputs to second channel, with same method, if space switching device SDS selects the final area of the virtual path of public passage speed conversion device 130, first channel data then shown in Figure 6 outputs to last channel the 32 channel.Therefore, when communication path when host exchange is connected to remote switching RSn, if select the second area of the virtual path of public passage speed conversion device 130, then communication path can constitute to No. 2 channels shown in Figure 7 from No. 1 channel shown in Figure 6.Therefore, if the communication path processor controls of space switching device SDS confirms the transformation relation of the communication path of relevant said method, when communication path is at remote switching RS
1When connecting between-the RSn, by breaking through the conventional constructive method of specifying same channel, communication path can constitute in the constant scope of channel inequality.
Under the communication path processor controls (not shown) of space switching device SDS was as above chatted face to face such situation that connects communication path of stating, this communication path processor controls was pressed the sequential working shown in Fig. 9 A-Fig. 9 C.At first, idle letter is logical to be sought if ask, and asks from remote switching RS by this
1-RSn or user's link block SCM
1-SCMn produces one and calls out (step 500), and then this communication path processor controls is read relevant remote switching RS
1-RSn or user's link block SCM
1The Channel Status Table (step 501) of-SCMn can be connected relevant far-end conversion equipment RS with seeking whether to have
1-RSn or user's link block SCM
1The idle channel (step 502) of the calling of-SCMn side, simultaneously, whether this communication path processor controls identification corresponding call is for remote switching RS
1The calling (step 503) of-RSn is if corresponding call is for user's link block SCM
1The calling of-SCMn then changes for user's link block SCM
1The Channel Status Table (step 504) of-SCMn is and if respective call is to remote switching RS
1The calling of-RSn then changes for remote switching RS
1The Channel Status Table (step 505) of-RSn.
Change for remote switching RS in step 505 communication path processor controls
1Under the situation of the Channel Status Table of-RSn, the operation of showing to change according to the order shown in Fig. 9 A or Fig. 9 C.
Change relevant from remote switching RS in the communication path processor controls
1-RSn produces for remote switching RS to the calling of host exchange
1Under the situation of the Channel Status Table of-RSn, carry out the operation of order shown in Fig. 9 B.At first, this communication path processor controls identification remote switching RS
1A lot of link channels (step 600) of-RSn side, and calculate virtual channel number (step 601).The time with, the idle channel number that this communication path processor controls will be sought in step 502 is divided into remote switching RS
1The multilink channel of-RSn side is set surplus value as the virtual channel number.After this, the communication path processor controls is by changing about remote switching RS
1The channel status of-RSn represents to record the information (step 602) of closing corresponding virtual channel.This communication path processor controls is discerned corresponding virtual channel number and whether is surpassed 1024(step 603).If corresponding virtual channel number does not surpass 1024, then this communication path processor controls is calculated virtual channel number (step 604) again.In step 604, this communication path processor controls is with remote switching RS
1The link channel of many appointments of-RSn is added to the virtual channel number that calculates in step 601, and sets added number as the virtual channel number.After step 604 operation, the operation of this communication path processor controls execution in step 602 in step 603, surpasses under 1024 the situation at corresponding virtual channel number, and this operation is finished.
Change relevant from space switching device SDS to remote switching RS
1The calling of-RSn produces for remote switching RS
1Under the situation of the Channel Status Table of-RSn, this communication path processor controls is according to the operation in tandem shown in Fig. 9 C.At first, communication path processor controls identification remote switching RS
1The multilink channel (step 701) of-RSn side calculates virtual channel number (step 702).Simultaneously, the idle channel number that will seek in step 502 of communication path processor controls is divided into remote switching RS
1Many the given link channels of-RSn are set surplus value as the virtual channel number.After this, by changing about remote switching RS
1The Channel Status Table of-RSn, this communication path processor controls writes down the information (step 703) of corresponding virtual channel.This communication path processor controls is discerned corresponding virtual channel number and whether is surpassed 1024(step 704).If corresponding virtual channel number does not surpass 1024, then this communication path processor controls is calculated virtual channel number (step 705) again.In step 705, this communication path processor controls subtracts 1 value with the link channel number of remote switching side and be added to the virtual channel number that calculates in step 702, and to set the value that has added be the virtual channel number.This communication path processor controls identification is divided into remote switching RS by the virtual channel number that will calculate in step 705
1Whether the surplus value of the multilink channel of-RSn side is 0(step 706), if remainder is not 0, the operation of operating procedure 3, otherwise with remote switching RS
1The link channel number of-RSn side is added to the virtual channel number (step 707) that calculates in step 705.The operation of this communication path processor controls execution in step 707, after this, the operation of execution in step 703 again, in step 704, if corresponding virtual channel number surpasses 1024, then operation is finished.
The present invention has at length narrated with reference to its preferred embodiment.Those skilled in the art readily understands additional advantage and modification.Therefore, under the scope that does not break away from by the spirit of the general inventive concept of appended claim and their content provided, can carry out various modifications.
Claims (3)
1, the method for attachment of communication path between some remote switchings and host exchange comprises step:
The communication channel capacity that every communication channel of described host exchange space switching device side is divided into the appointment of described remote switching side is divided into a plurality of parts, specifies a plurality of communication channels to seek the zone;
The communication channel of sequentially seeking described appointment is sought the zone so that whether the channel of determining to have corresponding to the described space switching device side appropriate address of the described host exchange of the communication channel of the described appointment of described remote switching side is idle condition;
If the communication channel of described appointment is all hurried, seek regional to the next idle condition channel of seeking the described space switching device side of the zone described host exchange of searching by moving this; With
By the idle condition channel of searching, specify this idle condition channel to give the communication channel of described remote switching side corresponding to the described space switching device side of the described host exchange of the communication channel of described remote switching side.
2, the method for attachment of the communication path between remote switching and host exchange comprises step:
A plurality of parts of many designated communication channel that every communication channel of the space switching device side by dividing described host exchange is described remote switching side, the designated communication channel of duplicating described remote switching side forms a plurality of virtual paths zone;
Seek described host exchange described space switching device side communication channel state and corresponding to the state of the communication channel in the described virtual path zone of described remote switching side designated communication channel; With
Connect a channel, this channel is the idle condition corresponding to the described space switching device side of the described host exchange of a channel of the idle condition in described virtual path zone.
3, the method for attachment of communication path between remote switching and host exchange comprises step:
A plurality of parts of many designated communication channel that every communication channel of the space switching device side by dividing described host exchange is described remote switching side, the designated communication channel of duplicating described remote switching side forms a plurality of virtual paths zone;
Come to specify the described empty communication channel of dividing channeling side of described host exchange to described virtual path zone according to a channel of order rotation in described virtual path zone; With
The communication channel that connects the described space switching device side of the described host exchange that is assigned to described virtual path zone arrives this communication channel, and this communication channel is the idle condition of described remote switching side.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR9327687 | 1993-12-14 | ||
| KR93-27687 | 1993-12-14 | ||
| KR930027687 | 1993-12-14 | ||
| KR1019940032572A KR0135212B1 (en) | 1993-12-14 | 1994-12-02 | Switching system |
| KR94-32572 | 1994-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1111894A true CN1111894A (en) | 1995-11-15 |
| CN1049084C CN1049084C (en) | 2000-02-02 |
Family
ID=26630050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94119844A Expired - Lifetime CN1049084C (en) | 1993-12-14 | 1994-12-14 | Connection method of communication path between a main station exchange and remote switching devices |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1049084C (en) |
| RU (1) | RU2119262C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336353C (en) * | 2001-10-03 | 2007-09-05 | 自由度半导体公司 | Method of operating a media access controller |
| CN109450791A (en) * | 2018-11-30 | 2019-03-08 | 四川安迪科技实业有限公司 | The method and system of the host intercommunication of the host and main website side of remote station side |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2191658B (en) * | 1986-06-13 | 1990-09-05 | Stc Plc | Telephone exchange |
-
1994
- 1994-12-14 CN CN94119844A patent/CN1049084C/en not_active Expired - Lifetime
- 1994-12-14 RU RU94045818/09A patent/RU2119262C1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336353C (en) * | 2001-10-03 | 2007-09-05 | 自由度半导体公司 | Method of operating a media access controller |
| CN109450791A (en) * | 2018-11-30 | 2019-03-08 | 四川安迪科技实业有限公司 | The method and system of the host intercommunication of the host and main website side of remote station side |
| CN109450791B (en) * | 2018-11-30 | 2021-06-11 | 四川安迪科技实业有限公司 | Method and system for intercommunication between host at remote station side and host at master station side |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1049084C (en) | 2000-02-02 |
| RU2119262C1 (en) | 1998-09-20 |
| RU94045818A (en) | 1996-10-20 |
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