JP2745485B2 - ATM switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Overview] Regarding the system configuration and control method of an asynchronous transfer mode (ATM) switch, it enables a high-speed call setup process, and when various ATM switches are introduced. In order to minimize changes in existing call processing software and to enable easy expansion, signal processing and service in ATM exchanges with asynchronous transfer mode speech path switches It is configured to have a call processor for performing control processing, and a call path control processor for controlling a call path of a call path switch based on a request from the call processor.

[Industrial applications]

The present invention relates to a system configuration of an asynchronous transfer mode (ATM) exchange and a control method thereof.

[Conventional technology]

ATM (Asynchronous Transfer)
Mode) switching technology has been agreed upon by CCITT and broadband ISDN (Inte
Research is being actively conducted in each institution as a technology for realizing grated services Digital Network).

Here, in ATM communication, various traffics with different bearer speeds and burstiness of information such as voice, data, and moving images are handled in a unified manner. There is a problem that it takes time. In addition, there is a problem that the assets (software) of the existing exchange must be efficiently inherited, and these solutions are desired.

In the conventional general Synchronous Transfer Mode (STM) exchange method, a line of a certain band is physically allocated to each medium such as voice, data, and moving image. For this reason, in the STM exchange, the communication path can be controlled only by physically discriminating the vacancy / occlusion of the entrance and exit of the switch, and the control is simple. Such communication path control has been realized by a call processing processor executing predetermined call processing software (program).

[Problems to be solved by the invention]

On the other hand, since the ATM switch manages the bandwidth in consideration of the bearer speed and burstiness of information, resource management of the speech path switch such as calculation of a cell discard rate and a delay time becomes complicated. Therefore, if the channel control (resource management of the channel) is performed on the same call processor as the conventional one,
There is a problem that it takes a long time to perform a call setting process, leading to a decrease in service quality.

Also, the configuration of the speech path switch (ATM switch) is different from that of the switch of the conventional STM exchange, and even though the ATM switch is implemented, there are various realization methods and the control method of the switch is also different. When the control processing is realized on the call processor side, it is necessary to significantly change the current call processing software, and there is a problem in the feasibility.

A similar problem occurs when an attempt is made to realize a large-scale ATM exchange.

Further, the above-mentioned communication path control method has a problem that the scale cannot be easily expanded.

The present invention enables high-speed call setting processing, minimizes changes in existing call processing software even when various ATM switches are introduced, and enables easy scale-up. The purpose is to enable the expansion of

[Means for solving the problem]

FIG. 1 (a) is a block diagram of the first embodiment of the present invention. The first embodiment is based on the premise that the ATM switch has the communication path switch 103 in the asynchronous transfer mode.

The call processor 101 performs signal processing and service control processing.

The channel control processor 102 controls the channel of the channel switch 103 based on the request from the call processor 101. The speech path control processor 102, for example, based on a request from the call processing processor 101,
A subscriber line management means for managing resources of the subscriber line 104 accommodated by the server, and an inter-office line management for managing resources of the inter-office line 105 accommodated by the speech path switch 103 based on a request from the call processor 101. And a path control means for controlling path connection in the speech path switch 103 based on a request from the call processor 101.

Next, FIG. 1 (b) is a configuration diagram of a second embodiment of the present invention. The second embodiment is based on the premise that the ATM switch has a configuration in which a plurality of speech path switches 103-1 to 103-n in the asynchronous transfer mode are interconnected by speech path coupling means 107.

Then, the suffix "-" added to the number of each component
As shown by “1” to “−n”, the first in FIG.
Has a configuration in which a plurality of sets (n sets, n is an arbitrary natural number) are combined. In this case, each call processor
101-1 to 101-n and each channel control processor 102-1
102-n are interconnected by a bus 106.

Here, each of the call processors 101-1 to 101-n respectively sets, for example, the band used by the outgoing line of each of the communication path switches 103-1 to 103-n to each of the communication path control processors 102-1 to 102-n.
n, means for selecting an optimal outgoing line, and means for communicating with another call processor.

Correspondingly, each communication path control processor 102
For example, in addition to the subscriber line management means, the inter-station line management means, and the path control means shown in the first embodiment, the communication between -1 and 102-n is performed based on a request from a corresponding call processor. It has a communication path coupling means management means for managing resources of the path coupling means 107.

Finally, FIG. 1 (c) is a configuration diagram of the third embodiment of the present invention. In a third embodiment, in addition to the configuration of the second embodiment shown in FIG.
It has a configuration in which a common memory 108 that stores information indicating the use band of the 3-n outgoing line is connected.

In this case, each of the call processors 101-1 to 101-n
However, the destination for inquiring the use band of the outgoing line of each of the call path switches 103-1 to 103-n is not to each of the call control processors 102-1 to 102-n as in the second embodiment, but to the above For the common memory 108.

[Action]

In the first embodiment of FIG. 1A, the call processor 101 sends a call to the channel controller 102 so as to handle a channel switch of a conventional STM (synchronous transfer mode) switch.・ Release request and pass reservation
Only a connection / disconnection request is output. Then, complicated communication path control (such as line bandwidth calculation) based on these requests is executed by the communication path control processor 102. As described above, the resource management unique to the ATM switch is distributed to the call path control processor 102 different from the call processing processor 101, so that the processing speed can be increased.

In addition, the existing call processing software can be effectively used by dividing the processing specific to the call path switch for ATM into a program module for the call path control processor 102 different from the processing program in the call processing processor 101. Can be.

According to the second aspect of the present invention, when a plurality of speech path switches are provided, a set of a call processing processor and a speech path control processor is provided for each of them, so that the switching system can be easily implemented in units of this set. Expansion can be performed.

According to a third aspect of the present invention, in the second aspect,
By providing a common memory 108 for storing information indicating the band used by the outgoing line of each of the call path switches 103-1 to 103-n, each of the call processors 101-1 to 101-n allows each of the call path switches 103-1 to 103-n. It is not necessary to inquire each of the communication path control processors 102-1 to 102-n about the use band of the outgoing line of 1-103-n, and the processing can be performed at a higher speed than in the second embodiment.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First Embodiment FIG. 2 is a configuration diagram of a first embodiment of the present invention.

The call processor 201 performs signal processing and various service controls while using the memory 202.

The channel control processor 203 performs complicated bandwidth calculations while using the memory 204 in order to efficiently flow various media through the ATM switch 208.

The signal processing 206 includes a subscriber line 209 and an ATM for the terminal.
Processes signals input and output via the switch 208.

The path table 207 stores switching information in the ATM switch 208 between the subscriber line 209 and the interoffice line 210 connected to another station.

The call processor 201, the call path control processor 203, the signaling device 206, and the path table 207 are mutually connected via a bus 205.

Next, FIG. 3 is a functional block diagram centered on the channel control processor 203 in the first embodiment shown in FIG. 2, and the resource management (call discarding) of the subscriber line 209 in FIG. Rate, delay time, etc.) analytically, and a subscriber line management unit 301 that performs processing corresponding to each request for acquisition, allocation, and release of the subscriber line from the call processing processor 201, and a second Analyze the resource management of the inter-station line 210 in the figure, capture the inter-station line from the call processor 201,
Assignment, release between the office line management unit 302 that performs processing corresponding to each request of release, and path reservation from the call processing processor 201, performs processing corresponding to each request of connection, disconnection, ATM switch 208 A path control unit 303 instructs path connection and disconnection.

FIG. 4 is an operation flowchart for realizing the function of the subscriber line management unit 301 in FIG. 3, which is realized by the communication path control processor 203 executing a program stored in the memory 204 in FIG. This is the process to be performed.

First, the request from the call processor 201 is
It is determined whether or not the capture is 09 (S401).

In the case of capturing (when the determination in S401 is YES), the following processes of S402 to S405 are executed. Here, capture of the subscriber line 209 refers to a process of securing the band of the subscriber line 209 based on a call from a terminal.

First, the free band of the designated subscriber line 209 is compared with the band requested by the user (S402).

As a result, if the specified subscriber line 209 is free (the determination in S403 is YES), the specified band is added to the currently used band, and a free VCI (virtual channel identifier) on the line is used. Is returned to the call processor 201 (S404). The information such as the bandwidth of the subscriber line 209 and the VCI is stored in the memory 204 shown in FIG.

On the other hand, if the designated subscriber line 209 is not free (the determination in S403 is NO), the fact that the acquisition has failed is notified to the call processor 201 (S405), and the call processor is Notification of call acceptance rejection.

Next, the request from the call processor 201 is
If it is not the acquisition of 09 (NO in S401) and the assignment of the subscriber line 209 (if the determination in S409 is YES), the following S
The processing of 407 to S413 is executed. Here, the subscriber line 209
Is a process of securing a band corresponding to the subscriber line 209 when the terminal newly requests use of another VCI during communication.

First, the free band of the designated subscriber line 209 is compared with the band requested by the user (S407).

As a result, if the designated subscriber line 209 is free (YES in S408), the designated band is added to the currently used band (S409).

Subsequently, it is determined whether or not the specified VCI is free (S410). If it is free, the VCI is allocated (successful acquisition, S411), and if it is not free, another VCI is allocated (S412).

On the other hand, if the designated subscriber line 209 is not free (the determination in S408 is NO), the fact that the acquisition has failed is notified to the call processor 201 (S413), and the call processor is Notification of call acceptance rejection.

When the request from the call processor 201 is neither acquisition nor allocation of the subscriber line 209 (NO in S401 and S406), and is a release of the subscriber line 209 (in the case of YES in S414).
In order to terminate the terminal communication,
9 is decremented by the amount requested to release the used bandwidth, and the specified VCI is released (S415).

Finally, if the request from the call processor 201 is not a request for the subscriber line 209, no processing is performed (No in S414).

Next, FIG. 5 is an operation flowchart for realizing the function of the interoffice line management unit 302 in FIG. 3, in which the channel control processor 203 executes a program stored in the memory 204 in FIG. This is a process realized by the above. Here, the request from the call processor 201 is
Inter-office line in the case of capture, allocation, and release
Processing corresponding to 210 is performed, but the processing of S501 to S515 completely corresponds to the processing of FIG. 4 in which the subscriber line 209 is replaced with the interoffice line 210 in each of the processing of S401 to S415. I have. As a result, according to the request from the call processor 201, the processing of capturing, allocating, or releasing the interoffice line 210 is realized.

FIG. 6 is an operation flowchart for realizing the function of the path control unit 303 in FIG.
Is a process realized by executing a program stored in the memory 204 of FIG. Path control unit
Reference numeral 303 denotes a path reservation and connection from the call processor 201,
Perform processing corresponding to each disconnection request. Path reservation refers to a process in which the call processor 201 secures a route to the destination terminal specified on the ATM switch 208 in advance based on a call from the source terminal. The path connection refers to a process for establishing a path on the ATM switch 208 when the call processor 201 receives a call to the called terminal after the path reservation and the called terminal responds to the call. Path disconnection refers to a process of releasing a corresponding path on the ATM switch 208 when a call ends.

In FIG. 6, first, it is determined whether or not the request from the call processor 201 is a path reservation (S601).

If it is a path reservation (if the determination in S601 is YES), the optimal internal route of the ATM switch 208 is determined from the designated incoming and outgoing lines of the ATM switch 208 and the requested band. Then, the required bandwidth is added to the used bandwidth on the route, and the path ID is returned to the call processor 201 (S602). In addition, information on each used band and each path ID
Are stored in the memory 204 of FIG.

The request from the call processor 201 is not a path reservation (S
If the determination of 601 is NO, if the connection is a path connection (the determination of S603 is Y
In the case of ES, the path table 207 (second path) in the entry line indicated by the path ID specified by the call processor 201
(See FIG.), The route information is written (S604). After this, the call becomes available and the ATM switch 2
The user information input to 08 is output from the ATM switch 208 to the receiving terminal.

Further, if the request from the call processor 201 is neither a path reservation nor a path connection (NO in S601 and S603) and is a path disconnection (if the determination in S605 is YES), the call processor 201 specifies The route information is deleted from the path table 207 on the entry line indicated by the obtained path ID, and the band corresponding to the deleted path is subtracted from the used band on the route (S606).

FIG. 7 shows an operation example of the first embodiment of FIG. 2 realized based on the above operation.

First, when the calling terminal makes a call, the SETUP
The signal is received by the signaling device 206 via the subscriber line 209 and the ATM switch 208, and is input to the call processor 201 (T1).

As a result, the call processor 201 issues a request for capturing the bandwidth of the subscriber line 209 to the channel control processor 203 (T
2), the channel control processor 203
1 (the program shown in FIG. 3 and FIG. 4), and performs a process of capturing the band of the subscriber line 209 (T
3). When the capture is completed, a notification of completion of capture is issued from the channel control processor 203 to the call processor 201 (T4).

Next, the call processor 201 analyzes the dial number (numeric) from the calling terminal, and then issues a request for capturing the band of the interoffice line 210 to the communication path control processor 203 (T6). As a result, the channel control processor 203 activates the interoffice line management unit 302 (the program shown in FIGS. 3 and 5), and performs a process of capturing the band of the interoffice line 210 (T7). When the acquisition is completed, the channel control processor
203 notifies the call processor 201 of the capture completion notification (T8).

Subsequently, the call processor 201 issues a request for a path reservation to the communication path control processor 203 (T9), and the communication path control processor 203 sets the path control unit 303 (shown in FIGS. 3 and 6). Program), and performs pass reservation processing (T10). When the reservation is completed, a reservation completion notification is sent from the channel control processor 203 to the call processor 201 (T11).

Further, thereafter, the call processor 201 performs a series of call connection processing.

That is, first, the call processor 201 sends a SETUP signal to the called terminal (T12), and the ALERT signal (confirmation signal) is returned from the called terminal (T14).
Further, the call processor 201 sends an ALERT to the calling terminal.
A signal is transmitted (T14).

CONNECT from the called terminal to the call processor 201
When the signal (connection signal) is input (T15), the call processor 201 issues a path connection request to the communication path control processor 203 (T16). In response to this, the channel control processor 203 activates the path control unit 303 again,
A path connection process is performed for the M switch 208 (T17).
When the connection is completed, a connection completion notification is sent from the channel control processor 203 to the call processor 201 (T
18).

On the other hand, the call processor 201
ONN ACK signal (connection response signal)
Sends NECT signals (T19, T20). After this,
A call can be made between the calling terminal and the called terminal, and a call is made (T21).

As described above, one example of the operation of the first embodiment has been described.
For other operations, corresponding processes can be performed based on the functional block diagram of FIG. 3 and the corresponding operation flowcharts of FIGS. 4 to 6. In this case, the function (call processing software) of the call processing processor 201 may be a conventional function, and other complicated processing such as band management in the ATM switch 208 can be distributed and processed on the communication path control processor 203. . That is, control of the ATM exchange can be realized while making the most of the function of the conventional call processor 201.

Second Embodiment FIG. 8 is a block diagram of a second embodiment of the present invention, showing a system configuration of a large-scale ATM exchange.

As can be seen from a comparison with the first embodiment of FIG. 2, in the configuration of FIG. 8, the systems represented by numbers 201 to 204 and 206 to 210 in FIG. As shown by the suffix “−n”, the bus 205 has a configuration in which n sets are connected in parallel. In addition, each ATM switch 208-1 to 20-20
8-n are mutually connected by a communication path coupling mechanism called cross-connect.

With such a configuration, it is possible to easily add an ATM switching system in units of the above-mentioned groups.

FIG. 9 is a functional block diagram centered on the channel control processor 203 (any one of 203-1 to 203-n) in the second embodiment shown in FIG. Management unit 301, interoffice line management unit 302, and path control unit 303
Has a function similar to that of the first embodiment. In addition to this, in the second embodiment, the resource management of the cross-connect (line of the channel connection mechanism) 801 in FIG. 8 is analytically performed, and the call processor 201 captures and allocates the line of the channel connection mechanism. It has a communication path coupling mechanism line management unit 901 that performs processing corresponding to each release request.

Hereinafter, the operation of the second embodiment shown in FIGS. 8 and 9 will be described. In the following description, any one of the n complex systems shown in FIG. 8 is represented by omitting the suffixes “−1” to “−n” of the numbers of the components. .

In the second embodiment, the functions of the call processor 201 include:
In addition to the basic functions described in the first embodiment, each ATM
A function of inquiring the use bandwidth of the output line of the switch 208 to each communication path control processor 203 and selecting an optimum output line and a function of performing communication between the call processing processors are added.
The function of the channel control processor 203 includes, as shown in the channel coupling unit line management unit 901 in FIG.
A function for managing the resources of the cross-connect 801 is added to the function of FIG.

First, the above-mentioned functions added to the call processor 201 and unique to the second embodiment will be described with reference to the operation flowchart of FIG. The operation flowcharts of FIGS. 10 (a) to 10 (d) are processing realized by the call processor 201 executing each program stored in the memory 202 of FIG.

First, the process of S1001 in FIG. 10A is an operation flowchart when the call processor 201 in FIG. 8 controls the subscriber line 209.

That is, the call processor 201 examines the station data stored in the memory 202 when it becomes necessary to control the subscriber line 209 (for example, when there is an outgoing call or an incoming call from a terminal), The ATM switch 208 (communication path) in which the subscriber is accommodated is extracted, and the call processor 201 controlling the communication path control processor 203 is checked.

If it is the processor, it issues a control order of the subscriber line 209, that is, a request for acquisition, allocation or release to the channel control processor 203 which it controls. if,
If it is a different processor, it issues a control order output command to the call processor 201.

As a result, the subscriber line management unit 301 (FIG. 9) of the corresponding channel control processor 203 is activated, and necessary processing is performed based on the operation flowchart of FIG. 4 similar to the case of the first embodiment. Will be

FIG. 10 (b) shows that the call processor 201 of FIG.
5 is an operation flowchart when controlling the interoffice line 210.

First, when the necessity of controlling the interoffice line 210 arises, the call processor 201 checks the office data stored in the memory 202 and stores the designated interoffice line 210 in the A
The TM switches 208 (call paths) are extracted, and an interoffice line information collection order is issued to all the call path control processors 203 corresponding to them (S1002).

This activates the interoffice line management unit 302 (FIG. 9) of the corresponding channel control processor 203 to collect interoffice line information. Although this processing is not shown in the operation flowchart in the case of the first embodiment in FIG. 5, it is processing for checking the free band of the designated interoffice line 210, and the free band information obtained by this is Corresponding call processor 20
1 is notified.

Subsequently, the call processor 201 collects the inter-office line information from all the communication path control processors 203 that have issued the inter-office line information collection order, and then obtains the inter-office line with the largest available band.
It extracts 210, and issues an interoffice line control order, that is, a command to output a request for capture, allocation or release, to the call processor 201 controlling the call path control processor 203 (S1003).

As a result, the interoffice line management unit 302 (FIG. 9) of the corresponding channel control processor 203 is started, and necessary processing is performed based on the operation flowchart of FIG. 5 similar to that of the first embodiment. Will be

The processing of S1004 in FIG. 10 (c) is performed by the call processor 201 in FIG.
6 is an operation flowchart when the control of FIG.

That is, as a result of the call control and the like in FIG. 10 (b), the call processor 201 determines that the ATM switch 208 having a different outgoing line (inter-office line 210) or incoming line (subscriber line 209) corresponding to one call. If it is determined that the ATM switch 208 exists in the (call path), the ATM switch 208 is connected to the call path control processor 203 controlled by the call processor 201 to connect the ATM switches 208 to each other. Issue a mechanism line control order, ie, a request for acquisition, allocation or release.

As a result, the channel control unit 901 (FIG. 9) of the channel control processor 203 is activated. FIG. 11 is an operation flowchart for realizing the function of this part,
This is a process realized by the communication path control processor 203 executing a program stored in the memory 204 of FIG. Here, when the request from the call processor 201 is each of capture, allocation, and release of the cross-connect (the communication path coupling mechanism line) 801, the corresponding processing is performed on the cross-connect 801. S111
The processing of FIG. 5 is performed by connecting the subscriber line 209 to the cross-connect (communication path coupling mechanism line) in each of the processing of S401 to S415 in FIG.
It is completely compatible with the one replaced by 01. As a result, according to the request from the call processor 201, the process of capturing, allocating, or releasing the cross-connect 801 is realized.

The processing of S1005 in FIG. 10D is performed by the call processor 201 in FIG.
6 is an operation flowchart when the control of FIG.

That is, the call processing processor 201 includes the incoming line (the subscriber line 209 of the calling terminal, the line of the cross-connect 801 or the inter-station line 210 of the incoming side) and the outgoing line (the subscriber line 209 of the called terminal,
In order to generate, connect and disconnect a path between the line of the cross-connect 801 or the outgoing interoffice line 210), a path control order is issued to the channel control processor 203 controlled by its own call processor 201. .

Thereby, the path control unit 3 of the channel control processor 203
03 (FIG. 9) is activated, and necessary processing is performed based on the operation flowchart of FIG. 6 similar to the case of the first embodiment.

Third Embodiment FIG. 12 is a block diagram of a third embodiment of the present invention.
FIG. 9 shows a system configuration of a large-scale ATM exchange similar to that of the second embodiment in FIG. The difference from the second embodiment is that a common memory 1201 storing the used band information of the outgoing route (inter-station line 210) is connected to the bus 205, and this information is transferred to all the call processors 201-1 to 201-. n is configured to be accessible.

FIG. 13 is a functional block diagram centered on the channel control processor 203 (any one of 203-1 to 203-n) in the third embodiment shown in FIG. As in the case of the second embodiment, the communication system includes a subscriber line management unit 301, an interoffice line management unit 302, a path control unit 303, and a line management unit 901. However, unlike the case of the second embodiment, the request for collection of interoffice line information from the call processing processor 201 is transmitted to the interoffice line management unit 3 of the call path control processor 203.
This is done not for 02 but for the common memory 1201.

Correspondingly, in the third embodiment, in the function of the call processor 201, the function of outputting each of the subscriber line control order, the speech path coupling mechanism line control order, and the path control order is shown in FIG. a), (c) and (d) are the same as those in the second embodiment, but the function of outputting the inter-station line control order is different from that of the second embodiment in FIG. 10 (b). 14 is different from that shown in the operation flowchart of FIG.

That is, when it becomes necessary to control the interoffice line 210, the call processor 201 examines the office data stored in the memory 202, and checks the ATM switch 208 that accommodates the specified interoffice line 210. (Communication paths) are extracted, and a corresponding collection order of inter-office line information is output not to the communication path control processor 203 but to the common memory 1201 (S
1401).

Subsequently, the call processor 201 collects the interoffice line information corresponding to all the corresponding interoffice lines 210 from the common memory 1201, then extracts the interoffice line 210 having the largest vacant band, and controls the call path. It issues an interoffice line control order, that is, a command to output a request for acquisition, allocation or release to the call processor 201 controlling the processor 203 (S140).
2).

As a result, in the same manner as in the second embodiment,
Corresponding interoffice line management unit 302 of speech channel control processor 203
(FIG. 13) is started, and necessary processing is performed based on the operation flowchart of FIG. 5 similar to the case of the first embodiment.

〔The invention's effect〕

According to the first aspect of the present invention, it is possible to execute the processing speed at a high speed by distributing the resource management specific to the ATM switch to a communication path control processor different from the call processing processor. Become.

In addition, the existing call processing software can be used effectively by dividing the processing specific to the ATM path switch into a program module for the path controller separate from the processing program for the call processor. Becomes

According to the second aspect of the present invention, when a plurality of speech path switches are provided, a set of a call processing processor and a speech path control processor is provided for each of them, so that the switching system can be easily implemented in units of this set. Extension can be performed.

According to a third aspect of the present invention, in the second aspect,
By providing a common memory for storing information indicating the use band of the outgoing line of each call path switch, each call processor needs to inquire each of the call path control processors about the use band of the outgoing line of each call path switch. This makes it possible to speed up the processing as compared with the case of the second aspect.

[Brief description of the drawings]

1 (a) to 1 (c) are block diagrams of the present invention, FIG. 2 is a block diagram of a first embodiment of the present invention, FIG. 3 is a functional block diagram of the first embodiment, FIG. 4 is an operation flowchart of a subscriber line management unit in the first embodiment, FIG. 5 is an operation flowchart of an interoffice line management unit in the first embodiment, and FIG. 6 is a first embodiment. 7 is an operation sequence diagram of the first embodiment, FIG. 8 is a configuration diagram of the second embodiment of the present invention, and FIG. 9 is an implementation of FIG. FIG. 10 (a) to (d) are operation flowcharts of the call processor in the second embodiment, and FIG. 11 is a functional block diagram of the line coupling unit line management unit in the second embodiment. Operation flowchart, FIG. 12 is a block diagram of a third embodiment of the present invention, and FIG. 13 is a third embodiment. Examples functional block diagram of FIG. 14 is an operational flowchart of the station line control order of the call processor in the third embodiment. 101, 101-1 to 101-n: Call processor 102, 102-1 to 102-n: Channel control processor 103, 103-1 to 103-n: Channel switches 104, 104- 1 to 104-n: subscriber line, 105, 105-1 to 105-n: interoffice line, 106: bus, 107: communication path coupling means, 108: common memory means.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuo Hatsukano 1015 Uedanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fujitsu Limited (72) Inventor Toshio Shimoe 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Fujitsu Limited (72) Inventor Yoji Tsuboi 1015 Uedanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fujitsu Limited (56) References JP-A-1-97095 (JP, A) JP-A-62-95049 (JP, A) Hei 1-128642 (JP, A) JP-A-62-97490 (JP, A)

Claims (4)

(57) [Claims] An ATM exchange having a configuration in which a plurality of communication path switches (103-1 to 103-n) in an asynchronous transfer mode are mutually connected by a communication path coupling means (107). -1 to 103-n) and a plurality of call processors (101-1 to 101) corresponding to the respective communication path switches for performing signal processing and service control processing.
-N), based on a request from each of the call processors, the bandwidth management of the outgoing line of each of the communication path switches (103-1 to 103-n), and each of the communication path switches (103-1 to 103-103). -N) a plurality of communication path control processors (102-1 to 102-2) for performing communication path control
-N), and a bus (106) for coupling the call processors (101-1 to 101-n) and the communication path control processors (102-1 to 102-n). ATM switch to do. 2. The call processing processor according to claim 1, wherein said call processing processor inquires each of said communication path control processors about a use band of an output line of each of said communication path switches, and selects an optimum output line. Means for communicating between the call path control processors, wherein each of the call path control processors manages a resource of a subscriber line accommodated in the call path switch based on a request from each of the corresponding call processing processors. Line management means, based on a request from each of the corresponding call processors, an interoffice line management means for managing resources of an interoffice line accommodated by the speech path switch, and A path control unit for controlling connection of a path in the communication path switch based on a request; and a call control unit based on a request from each of the corresponding call processors. ATM switch according to claim 1, characterized in that it comprises a speech path coupling means managing means for managing the resources of the coupling means. 3. An ATM exchange having a configuration in which a plurality of communication path switches (103-1 to 103-n) in an asynchronous transfer mode are mutually connected by a communication path coupling means (107). -1 to 103-n) and a plurality of call processors (101-1 to 101) corresponding to the respective communication path switches for performing signal processing and service control processing.
-N), based on a request from each of the call processors, the bandwidth management of the outgoing line of each of the communication path switches (103-1 to 103-n), and each of the communication path switches (103-1 to 103-103). -N) a plurality of communication path control processors (102-1 to 102-2) for performing communication path control
-N), a common memory (108) for storing information indicating the use band of the outgoing line of each communication path switch managed by the communication path control processor, and each of the call processing processors (101-1 to 101-). n), and a bus (106) for coupling each of the communication path control processors (102-1 to 102-n) with the common memory. 4. The call processing processor according to claim 1, further comprising: a means for extracting a use band of an output line of each of the communication path switches from the common memory and selecting an optimum output line; Means for performing communication, wherein each of the communication path control processors manages, based on a request from each of the corresponding call processing processors, a resource of a communication line accommodated by the communication path switch. Means, based on a request from each of the corresponding call processors, an interoffice line managing means for managing resources of an interoffice line accommodated by the speech path switch, and a request from each of the corresponding call processors. A path control unit that controls connection of a path in the speech path switch, based on a request from each of the corresponding call processors, ATM switch according to claim 3, characterized in that it comprises a speech path coupling means managing means for managing the source, the.