JP2000137605A - Exchange service control method, exchange and recording medium recording exchange service control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To add/change/delete exchange service without stopping an exchange during an operation by referring to a pointer held by a second table, executing a function which the pointer shows and supplying service. SOLUTION: A service control part is loaded and the entry address of activation program is recorded in an activation table 70. A service activation control part 66 refers to the entry address recorded in an activation function table 70 and starts a service control part 76. The service control part 76 records the pointer of a function executing service in a linkage function table 60. The pointer of the function obtained by referring to the linkage function table 60 is recorded in the call function table 74 of a call processing instance management part 72 by a service starting part 54. The service starting part 54 refers to the function pointer recorded in the call function table 74, executes the function in the service control part and executes service.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
In connection with technology for adding functions, etc.,
Add / change service functions without interrupting service
Switching service control method, switching system and exchange
The storage medium on which the exchange service control program is recorded.
You. In recent years, with the opening of the communication market,
Competition is intensifying, and telecommunications carriers are offering services to subscribers.
Differentiating with screws. However, there are many services
And the exchanges that provide that service
Software has become more complex,
There are situations where new services cannot be provided easily. I
Therefore, new services are introduced, especially for telecommunications carriers.
In addition to stopping operation even when entering,
New service functions without affecting existing services
There is a need for an exchange that can be added. [0003] FIG. 1 is a diagram showing a conventional switching equipment for an exchange.
FIG. 2 is a module diagram showing a software execution module 10.
You. As shown in the figure, the replacement software execution module
File 10 is the operating system that serves as the program base.
20, common function program module group 16, maintenance operation
Program module group 18, exchange control program module
Module group 14, service control program module group
12 is comprised. Common function program modules
Reference numeral 16 denotes a common device having common functions such as memory area acquisition.
Maintenance program consisting of functional programs 1 to x
The module group 18 is a maintenance operation professional having a maintenance operation function.
Exchange control program module
Rule group 14 is an exchange having basic functions of an exchange such as a call connection.
The service control program consists of control programs 1 to m.
The gram module group 12 is a service providing machine for three-party calls, etc.
Service control programs 1 to k
You. In addition, service control programs and exchange control programs
The programs execute processing while associating with each other. According to the prior art, the operating system
All exchange services, including system and maintenance operation functions
The function module to be controlled is
Loading and switching to the exchange as a hardware execution module
I use it. Therefore, the new exchange service in operation
When adding functions, especially when the scale of the addition is large or
A new service control program must be added
Operating the software of the entire switching system
How to suspend and replace the middle exchange system
Had been taken. Also, the scale of the function to be added is not large
In such a case, as shown in FIG.
Of the service control unit 34 or the exchange control unit 32
By making partial changes called patches to parts of the ram
New features have been realized. The service control unit 34
In the above, the service control program described above is executed,
The control unit 32 executes the above-described exchange control program.
In FIG. 2, the software patch 4
4 is generated and a part of the above maintenance and operation program is executed.
Added to the patch area 36 via the patch management unit 42
Service programs 38 and 40 are written and exchange control
The unit 32 and the service control unit 34 have additional service
Patch 3 that transfers execution to the program and returns when execution is completed
3, 35 are written. [0005] However, the above-mentioned problems
According to the conventional method, the service being provided when adding the service
Service or call.
Was. In other words, if a function is added by a patch,
Professionals added immediately after the patch was released to the exchange
The call processing data is changed because the program operates
For example, during a call or during a call before applying a patch
Call may be disconnected after patching
Was. Also, according to the patch, call processing data has changed significantly
Since it is difficult to add,
There is a limit. In addition, when adding functions that cannot be
In this case, share the new program with the program for the entire switch.
Recompiled, stopped the exchange, and
It was necessary to replace the entire software. [0006] The present invention has been made in view of the above points,
The service can be executed without stopping the operating switch.
Affects the call status such as ringing and talking during a call
Exchange services that add, change, or delete exchange services
Service control method, exchange and exchange service control professional
The purpose of the present invention is to provide a recording medium on which
You. [0007] In order to solve the above problems,
The configuration of the present invention is as follows. Claim 1
Of the invention relates to an exchange controlled by a program.
Service programs that execute specific services
If the service program is
Executes the service of the service program.
Record the pointer to the function for
The exchange receives a request to use the service by calling.
A temporary storage area is reserved for each call, and the first table is stored.
The pointer obtained by reference is stored in a second table in the storage area.
And the pointer held in the second table.
Executes the function indicated by the pointer by referring to
Exchange service system characterized by providing services
It is your way. According to the present invention, a link to a dynamically called function is provided.
At compile time.
No need for address linkage between callee and caller
When adding services, etc.
Or it is not necessary to create or replace the entire file,
Service addition is easy and service interruption can be prevented.
You. In addition, the service program was modified during service operation
Even if you reload the service program
Service service calls during service
Of course, the call of the service program before remodeling was completely affected.
Service programs can be loaded without impact
You. An exchange service control method according to claim 2.
Indicates that the exchange has the service program
State of the storage area to be
Data that manages the state of the program.
To control the loading. According to the present invention,
The storage area of the service program to be
Conflicts with service programs.
Wear. Also, when deleting a service program,
A service program currently in service cannot be deleted carelessly.
Control. An exchange service control method according to claim 3.
In the predetermined case, the exchange periodically switches the row.
Monitoring the service program and the service program
Is detected, or by command
This is the case when an instruction is input. According to the present invention, Rohde
Can be used quickly. An exchange service control method according to claim 4.
The service program is compiled independently
Is to be loaded. According to the present invention,
Service program development becomes easier. Claim 5
Switch service control method is based on existing service programs.
When replacing a system with another service program, the existing
If there is a first call executing the service program,
Services to be provided by another service program
When the second call is made, the exchange newly renews the temporary
Securing a storage area and having another service program
Holding a table of pointers to functions in the storage area,
By executing the function indicated by the pointer, the second call
The service provided by the other service program is provided. According to the present invention, a place for providing a remodeling service, etc.
In the case of using the service before remodeling as before
It is possible to switch services without disconnecting the call
it can. An exchange service control method according to claim 6 is provided.
Exchange the loaded service program
When deleting from the service, the value in the first table is
To return to the value before the program was loaded
2. The switching service control method according to 1. According to the present invention, a service loaded
Deleting a program will not cause a call to be dropped
Service can be continued before
You. The following invention also has the same effect as above. Claim 7
The invention described in (1) is an exchange controlled by a program.
A service program that executes a specific service
Loading means and the service program has
A pointer to a function to perform the service
Having a first table to carry the service in a predetermined case
The program stores a pointer to the function in the first table.
Means for recording and a request to use the service
Means for securing a temporary storage area for each call in some cases;
The pointer obtained by referring to the first table is stored in the storage area.
Means for holding at a second table in the area;
By referring to the pointer held in the table,
Means for providing a service by executing the function indicated by the interface;
An exchange having the following. [0014] The exchange according to claim 8, wherein the service
Space vacancy of the storage area where the program is loaded
For managing status and status of the service program
And controlling the loading using the data.
Having means. The exchange according to claim 9, wherein the exchange is
Means and command for periodically monitoring said loading
Input means, and the predetermined case is provided to the monitoring means.
That the service program has been loaded
Is detected, or an instruction is input by a command.
This is the case. [0015] An exchange according to claim 10 is an existing service.
Replace a service program with another service program
The first call running the existing service program
The service provided by the other service program.
When a second call to be served occurs, the exchange will
The temporary storage area is secured and another service program is
The table of pointers to the functions of the RAM is stored in the storage area.
Means for executing the function indicated by the pointer.
By means of said another service program to said second call
Means for providing a service. An exchange according to claim 11 is a load switch.
Deleted from the switchboard
The value of the first table in the service program.
Means are provided for restoring the values before the ram was loaded.
The invention according to claim 12 is controlled by a program.
Computer readable to control switch services
Recording medium storing a functional switching service control program
A service for executing a specific service to the exchange.
Program, and in certain cases the service
Service that the service program has in the service program
A pointer to a function to execute the
And if there is a request to use the service by calling
A temporary storage area is reserved for each call, and the first table is stored.
The pointer obtained by reference is stored in a second table in the storage area.
And the pointer held in the second table.
Executes the function indicated by the pointer by referring to
Exchange service system characterized by providing services
It is a recording medium on which a control program is recorded. An exchange service control program according to claim 13.
The recording medium on which the program is recorded is the service program.
The storage area where the memory is loaded
Holds data that manages the status of the service program
Then, the loading is controlled using the data. Contract
Recording the exchange service control program according to claim 14.
In the case where the predetermined condition is satisfied, the switching medium
The loading of the service program
When it detects that the program has been loaded, or
This is a case where an instruction is input by a command. An exchange service control program according to claim 15,
The recording medium on which the program is recorded is stored in an existing service program.
To replace existing programs with another service program.
If there is a first call executing the service program,
Services to be provided by another service program
When the second call is made, the exchange newly renews the temporary
Securing a storage area and having another service program
Holding a table of pointers to functions in the storage area,
By executing the function indicated by the pointer, the second call
The service provided by the other service program is provided. An exchange service control program according to claim 16
The recording medium on which the program was recorded is
When deleting the service program from the exchange,
The value of the first table is loaded by the service program.
Revert to the value before being printed. The invention according to claim 17
Controls the services of exchanges controlled by the program.
Computer readable switch service control
A recording medium on which a program is recorded,
A function to execute a fixed service,
The pointer to the function when the
A program for recording on the
By referring to the pointer recorded in the table, the function
Exchange service control program characterized by being executed
This is a recording medium on which a ram is recorded. FIG. 3 shows an exchange according to an embodiment of the present invention.
Is a functional block diagram showing an outline of a functional configuration of the device 50.
is there. As shown in the figure, the exchange 50 performs exchange control.
Exchange control unit 52, a service for activating the service control unit
The activation unit 54 is a service program that executes a service.
Certain service control units 56 and 76, service control unit 58
Plug-in and plug-out for integrating the system into the system
Control unit 62, area where the service control unit is loaded
Plug-in memory area 61, plug-in memory area
Plug-in that manages the empty / busy state of the memory in the area 61
To activate the area management data 78 and the service control unit
Activation control unit 66 and activation function table for
And has a file 70. Also improved the existing service control unit
To replace the service control unit
Service provided when part is deleted or plugged out
Linkage function, a function that does not affect
Number table 60, call processing instance management unit 72, call
And an output function table 74. Also new services
To generate the control unit 58, the file environment 64 is used.
Can be. Next, referring to the flowchart shown in FIG.
An outline of the operation of the present embodiment will be described. Step 1
For replacing and adding services in the file environment 64
The service control unit 58 is generated. Service control
The unit is a program in an executable format, such as an optical disc or
It is recorded on a medium such as a magnetic tape. Step 2
The service control unit 58 performs plug-in plug-out control
Read by the unit 62, and
The service control section is an empty area of the plug-in memory area 61
It is taken in. Here, the plug-in memory area 61
The empty / busy state of the memory is determined by the plug-in area management data 78.
The plug-in area management data 78 is
By referring to the lag-in plug-out control unit 62,
The service control unit stores the data in the plug-in memory area 61.
Be included. The same as when the service control unit is loaded.
Sometimes activated as activation step 4 in activation function table 70
The entry address of the application program is recorded. sand
In other words, the service
Of the function (processing program) for activating the control unit
Record the entry address in the activation function table 70
You. Note that activation means that the service control unit is the service activation unit.
The state is set to a state in which activation can be performed by 54. Step 5 is a service activation control section.
66 is the entry recorded in the activation function table 70
Refer to the address and start the service control unit 76
You. Service control unit started as step 6
76 links the pointer of the function that executes the service
It is recorded in the function table 60. Step 7
The service activation unit 54 refers to the linkage function table 60.
You. In step 8, the service activation unit 54 sets the linkage
The function pointer obtained by referring to the function table 60 is
Call function table of the call processing instance management unit 72
Record at 74. Then, as step 9, the service is started.
The moving unit 54 is a function recorded in the call function table 74.
Execute the function in the service control unit by referring to the pointer
And run the service. Note that the calling function table
74 is called when the service is started by dialing.
In the memory area generated in the processing instance management unit 72
Provided. The calling function table 74 has a service
It is used when switching or adding resources. That is, improvement
When switching to a service,
When the service control unit is operating after receiving a call,
The start-up part of the improved service from the linkage function table
Get the address of the function and use it in another calling function table
And then receive a call for that service
The service invocation section refers to the new call function table.
And perform improved services. Switching services,
Details of the operation at the time of addition and the like will be described later. FIG. 5 shows an exchange software according to the embodiment of the present invention.
FIG. 3 is a module diagram showing a wear execution module. Same figure
As shown in FIG.
An operating system 82 serving as a program base,
Common function program module group 84, maintenance operation program
RAM module group 86, exchange control program module
Group 88, service activation program module group 90,
Linkage function table 92, execution module 94 ₀ ~ 9
4 _n Consists of The execution module 94 ₀ Ha
ぺ Rating system 82, common function program module
Module group 84, service activation program module group 9
0, which is a summary of the linkage function table 92
You. The exchange control program module group 88,
ぺ Rating system 82, common function program module
Module group 84, maintenance operation program module group 86,
The exchange control program module group 88 is the same as the conventional technology.
It is like. Service activation program module group 90
Is composed of service activation programs 1 to n.
The service start program starts from the exchange control program
Is applied, the cross linkage function table 92 is
Determine and start service control program while referring
I do. Execution module 94 ₁ ~ 94 _n Is the service control
Program and function table generator,
The service control program enters the program to be executed.
Functions are provided in the function table. Also, when activated
Function table generator, the linkage function
Set a pointer to the entry function for the table. This
Software module configuration that allows
Execution module 94 including a group of programs ₀ And service
Execution module 94 of control unit ₁ ~ 94 _n Independence,
Create a new service or modify an existing service
In some cases, such as the existing part of the execution module 94 ₀ Affects
Compiles independently and gives execution module without giving
it can. Therefore, in the file environment 64, other services may be used.
A service control unit independent of the service can be obtained. FIG. 6 is a diagram showing a hard disk of an exchange according to an embodiment of the present invention.
FIG. 3 is a hardware configuration diagram. As shown in FIG.
Is the main control unit (MPR: Main P)
processor) 110, a call control device for controlling a call
(CPR: Call Processor) 120, 1
30 and 140. Main controller 110 is
Central processing unit (CPU) 11 for processing programs
1. To cause the central processing unit (CPU) 111 to execute
A main storage device 112 for storing programs and data;
Input / output device for interfacing with the outside of the exchange
113, an external storage medium for storing programs and data
114, exchange information with portable storage media such as magneto-optical disks
External storage device 115 for data transfer, and information between control devices.
Access between processors to control information access
It comprises a control device 116. Call control device 120 is outside
Storage medium 121, access control device between processors 12
2. Central processing unit 123, main storage medium 124, communication path equipment
It is composed of a device 125. Other call control devices have the same configuration
It is. Functions described above in the embodiment of the present invention.
Is mainly in the central processing unit 111 in the main controller 110.
Executed. FIG. 7 shows an exchange 50 according to an embodiment of the present invention.
FIG. 2 is a functional block diagram showing details of the functional configuration of FIG. This implementation
The main part of the example is the same as the outline configuration described above.
Details will be described. The service activation unit 54 has n services
Startup program 55 ₁ ~ 55 _n Built-in. Call processing
The instance management unit 72 stores information necessary for call processing when calling.
Capture the moly block. In this memory block,
A call function table 74 is allocated for each call. Sa
The service control unit 56 has a service control program 57
A number table generation program 67 is built-in.
A service control program 77 and a function
A table generation program 79 is incorporated. plug
The in-plug-out control unit 62 controls the plug-in memory area management.
Plug-in for loading service data 78 and service control unit
-in Loader69 and service control section are loaded.
Plug-in memory area (not shown in FIG. 7)
Determine the area in the file by referring to the plug-in area management data
Plug-in Manager 68 is provided. Service activation
The control unit 66 has an activation program 65,
When activation request is made, refer to activation function table 70
I do. In the following, referring to FIG.
The operation of the embodiment of the present invention will be described in detail. FIG.
Is a service plug-in in the embodiment shown in FIG.
Processing for loading of the service control
It is a flowchart which shows a process. In file environment 64
The generated service control unit 58
Is read out from the storage unit 115 (FIG. 7A), and
The information is temporarily stored in the external storage medium 114 as the top 2. S
As Step 3, Plug-in Loader 69 is Plug-in Manage
Inquires r 68 of the loading destination address. S
As Step 4, Plug-in Manager 68 provides service control
Section is a relocatable executable, that is, which memory address
Check whether the executable is executable even without
If locable, plug-in area as step 5
The free area is supplemented based on the management data 78. Step
In step 4, the service control unit is a relocatable execution type
If it is not an expression, for example,
Memory address to be executed at the time of file
In the case of an expression, the plug-in area management data
Plug-in Manager 68 based on data 78
The execution address assigned by the piler is in the plug-in memory area.
It is verified whether the area is empty. Step 7
As a result, it is determined whether the verification result is
If it is a double assignment, a warning message is displayed as step 8.
Is output and the plug-in is rejected. Step 7
If not, go to step 9. Steps
After step 5 and step 8, the process also proceeds to step 9. To step 9
Whether the memory allocation of the service control unit has been completed
Is checked and if not completed, the service
The login process ends. If completed, step
10 is a memory area for loading the service control unit.
After determining the dress, as step 11,
In the state of the assignment status table that is "plugged in"
Set. In step 3, an address inquiry is
When the processing is completed, the memory area is
Check if it is a double assignment,
finish. If not, go to step 13
The service control unit to the captured memory area address.
Load (FIG. 7B) and load as step 14
Of the function table generation program of the service control unit
Is written to the activation function table 70 (see FIG. 7).
(C)) End the process. FIG. 9 shows an example of plug-in area management data 78.
In this case, the plug-in memory area
Management using a memory empty / busy table as shown in (a)
Is done. One bit in this table means 8 KB area.
Taste, "1" indicates in use, "0" indicates empty. service
If the control unit is relocatable executable, plug-in
Divided the service control unit size by 8 KB and stored
Find the rear size and continuously vacant areas, that is,
By determining the bit position where “0” continuously exists,
The storage address. Service control unit is absolute address
If it is an executable, the server allocated by the compiler
From the start address of the screw control unit to the bit of the memory empty / busy table
Determine the position and check if the size is an empty area.
Check. FIG. 9B shows plug-in area management data.
Shows the allocation status table and shows the maximum
In order to manage information for large services,
A is secured. This table is mainly for plugin
Used for the memory area status display function. For example, plug
What services are implemented in the in-memory area
Command to display usage status of Kaya plug-in memory area
It is used in the world. Therefore, the assignment state table
The service name, plug-in memory area location,
Proprietary size and keeps the status of the service
You. In addition, the above-mentioned relocation
Information on program attributes in the form of a table or absolute address
Free space in the plug-in memory area
For example, plug-in / plug-out
Is repeated to repeat the empty bits on the memory empty / busy table.
Relocatable format support when
Reallocate the service control section and expand the vacant area.
Can be. With the above processing, the service control unit 58
Is a plug-in memo in the plug-in plug-out control unit 62.
Loaded on the re-area. FIG. 10 shows the activation function
An example of the cable 70 is shown. In the activation function table 70,
By the service number, which is the identification number of the service control unit
Function table generation program in service control unit obtained
The address to the system is set. This table will be described later
It is referred to by the service activation control unit 66. FIG. 11 shows the activation of the service control unit and the link.
FIG. 9 is a flowchart showing a process of generating a cage function table.
is there. As step 1, the service control unit
When loaded or plugged into the memory area,
In step 2, the service activation control unit 66
From the number table 70, the loaded service control unit
Obtain the address of the function table generation program and
The function table generation program is started as step 3 (FIG. 7).
(D)) to start the function table generation processing,
As 4, the linkage function table is read. Steps
5 set in the linkage function table 60
Check if the service is a new service
If the service is not a new service,
Step 6: Keep the contents of the old linkage function table
Then go to step 7. In step 7,
Linkage function table for all service control program functions
(FIG. 7E). Complete setting as step 8
Check if completed, and if not completed,
A setting error warning is issued as 9, and the process is terminated.
If completed, the process ends. In step 3, a function table generation program
When the ram is started, as step 10, the function table
Check if generation is complete and if not
If it is, the process is terminated.
Plug-in area management data allocation status table
Change the allocation status to "Implementing service" and end the process.
Complete. Service activation, linkage function table
Generation will be further described with reference to FIG. Service of Figure 7
Control units 56 and 76 are independent of other execution modules.
Because it is compiled, it is stored in the plug-in memory area.
Called from other execution modules even if loaded
I can't do it. Therefore, the service activation control unit 6
The service control unit 76 is activated by the activation program 65 of FIG.
It is activated, that is, put into a usable state. The activation program 65 is activated periodically or
Invoked by command. Periodic startup
The plug-in menu in the plug-in plug-out control unit 62
By monitoring the memory area management data 78, the plug-in
To know the service number of the service control unit 76
it can. Also, when starting by command, the maintenance person
Enter the service number from
Use the plug-in memory area management data 78 from the service name.
To obtain a service number. Like this
Number and activation function of service control unit 76 obtained
From the table 70, the function table in the service control unit 76
(D in FIG. 7)
)). The function table activated from the activation program 65
The bull generation program 79 includes the service control program 7
Linkage function text based on the function table defined in
The address of the function is set in the cable 60 (FIG. 7).
(E)). FIG. 12 shows the linkage function table 60.
The configuration and operation of the function table generation program 79 are shown.
FIG. In FIG. 12, the linkage function table 6
0 is the first stage table indexed by service number
In the function pointer table indexed by function number
It is configured. The first-stage table contains a function pointer table.
The address of the bull is written in the function pointer table
Contains the function pointer address of the service control program 77.
Address can be set. Service control unit 7
6, the function table generation program 79 is compiled
The function of the service control program 77 generated at the time
Linkage function table based on table and service number
Set function pointer in function pointer table of 60
You. The linkage function table 60 thus set
Is referenced by the service launcher. In FIG. 7, a certain service is activated.
In this case, the exchange control unit 52
Service start program, here service start program
Ram 55 _Two (FIG. 7 (f)). Service startup
Program 55 _Two Is a call processing instance management unit 72
Grab a memory block from Then, as described above
Function information from the set linkage function table 60
Read (FIG. 7 (h)), the captured memory block
Function address in the call function table 74 in the
((G) of FIG. 7). Service activation program 55 _Two Or
To start the service control program 77 from FIG.
This call function table 74 is used for (i)).
You. That is, it is started from the exchange control unit 52.
The service start program is a direct service control program.
Instead of calling the function of the system, according to the service number
Function pointer table obtained from the linkage function table
Table 150 (FIG. 12) is temporarily managed by the call processing instance.
Call function data is stored in the call control memory block in the unit 72.
Table 74, and the stored call function table
Function 160 of the service control program with reference to the
(Functions 1 to 3) are called. FIG. 13 is a flowchart showing the above processing.
FIG. In the figure, when a certain service is called,
As a step 1, the service start program from the exchange control unit
The program is started, and the service start program
The gram is a memory area of the call processing instance management unit 72.
To capture. Linkage function table as step 3
Read the address of the function from
The read address is stored in the call processing instance management unit 72.
Copy to call control memory block in memory area of
Thus, the calling function table 74 is set. Stay
As a step 5, the service start program calls the calling function text.
The cable 74 is read. Also, depending on the service,
Call processing installation in response to received digits, connection response, disconnection, etc.
Read the read function table in the touch memory area
You. In step 6, the read function address is valid
Check if it is not valid, and go to step 7
Error processing such as forcible release of the call, and terminate the processing.
If effective, step 8 of the service control program
Start up and end the process. In step 8,
For the types of received signals such as reception of dial numbers, connection response, disconnection, etc.
Service system determined from call function table accordingly
Your service control program is called. As described above, according to the present invention, (1) a service control unit as a completely new service is added
Even if it is added, the linkage function table 72
By setting a new service control program function
Functions can be added. (2) Even if the existing service is modified,
Service control section as well as new services
Add new and old by rewriting cage function table
Can be replaced. At this time, the old service control
Even if there is a call being made, the service start program
Service control in the call control memory block supplemented by the system
Function pointers are stored, so
Processing can be performed without affecting. The flow of the above series of processing is described as a free dial
Call originated from a subscriber
This will be described with reference to FIGS. First as Step 1
Perform system initialization. That is, as shown in FIG.
The function table generation program in the service control unit is
Implemented in service control program at system initialization
Function (f1 and f1
f2) pointer address in linkage function table
Set. In FIG. 15, free dial service
When a call is made from a subscriber, as step 2,
From the switching control program to the service startup program
The service start program is executed as step 3
Call control memory block in call processing instance manager
Supplementally, as step 4 in the linkage function table
Copy the contents to the call control memory block. Call control memory
The block retains its contents until the call ends
This is a possible memory area. Call control memo as step 5
Refers to the function table stored in
The service control program from the service start program
The program is executed. Here, a free dial with additional functions
FIG. 16 shows a case where a service is added. Service system
A new freezer loaded as your program
The dial service is called toll-free dial 2, and as a function
Has f1 ′ and f2 ′. Free dial
2 Load the service control program corresponding to
Function table generation program is started when
In step 7, entries of added functions f1 'and f2'
Address is overwritten in linkage function table
You. Call control memory block in the call processing instance manager
Function on the previous service control program (fl and f
2) is held, and the service control program proceeds to step 8
Service has already started
Subscribers receive the new service program loaded
Is not affected either. The call from the new subscriber is switched to the switching control program again.
The program is accepted and the service
If the program has been started,
New call control memory block
Is added, and as a step 11, f1 ′ and f2 ′ are
Function table is copied to the call control memory block.
In step 12, the service start program executes the function
Referring to the address of the
The service is executed. In this case, the old and new service control
Programs are running at the same time, but the old service
Subscribers using the program end the call and
Service control program is no longer used. As described above, the addition, switching, and connection of services
The service plug-in was explained. Next, once
Return the plugged-in service control unit to the state before plug-in
The service plug-out will be described. Plugin
Simply plugging out the service control unit
Not only is the line program deleted and the service stopped,
This will have a significant impact on the system. So,
Follow the steps below when lagging out. (1) Service control unit to be plugged out
Stop making calls to. (2) Monitor calls already in service, that is, calls in service
Service control program when all calls have ended.
Plug out the system. FIG. 17 is a flowchart of a specific plug-out process.
This will be described with reference to the functional block diagram of FIG. At the time of plug-out, as step 1
Command to close the service in the service activation control unit 66
To notify. As step 2, the activation program 65
Pass the blockage notification to Plug-in Manager 68 (Fig. 7
(J)). As step 3, Plug-inManager 68
Allocation state table in lag-in area management data 78
Is rewritten to "Plug-out request in progress". Stay
As a fourth step, the Plug-in Manager 68 periodically
The plug-in request is retrieved by searching the connection status table.
Call processing service
An inquiry is made to the instance management unit 72 (FIG. 7 (k)).
In step 5, it is determined whether there is a busy call, and the busy call is determined.
If there is, wait for a while as step 6 and then step
Returning to step 5, if there is no active call, step 7
As allocation status in the plug-in area management data 78
Return the status value of the corresponding service in the table to the initial value, and
In Step 8, it is checked whether the blockage is completed.
If not, the process ends.
Step 9 is to recover the calling function table.
The processing from step 10 is performed. The activation program 65 as step 10
Starts the function table generation program 79. Step
Function table generation program 79
The cage function table is read, and step 12 and
To check if there is a table,
If not, use the linkage function table as step 13
Initialize and if there is a table, go to step 14
Linkage function table with contents of linkage function table
To complete the function table recovery process
You. That is, the function table generation program is applicable
Rewrite function pointer in linkage function table 60
Previous state ({0} for new service, existing service
If it is exchanged, the function pointer value of the existing service)
Set it. Therefore, the exchange control unit 52
Function pointer when the service start program is started
If the value is {0}, the service control program is started.
However, newly placed calls are restricted. In addition, existing services
The value of the linkage function table of the screw is a function pointer.
In some cases, existing services can be
Because it is started, service interruption does not occur. Next, as step 15, the activation function table
Recovery of the Bull 70, and the service
The control unit from the plug-in memory area. Exchange
FIG. 6 shows a recording medium on which the machine service control program is recorded.
Either the main storage device 112 or the external storage medium 114
It corresponds to one or both. The above recording medium
The central processing unit 111 is attached to the body according to the procedure described above.
The program to operate is stored.
Storing this program in the memory etc. of the exchange
It is better to use an existing switch as the switch of the present invention.
Can be. Main storage device 112 or external storage medium 114
Electronic media and hard disk drives
There are discs. In addition, the exchange service control program of the present invention.
From a magneto-optical disk, magnetic tape, etc.
Load this program into the memory of the existing switch, etc.
The existing exchange as the exchange of the present invention.
Can be used. The present invention is not limited to the above embodiment.
Various changes and applications are possible without departing from the scope of the claims
It is. According to the present invention, the service during the operation of the exchange is
Replacement of screws becomes possible. Previously swapped services
File generation and system
Restart (initialization) operation at start is required, service
Was temporarily suspended, but the present invention
Without affecting the performance of the body,
Switching and addition become possible. Also, future exchanges
"User Programmability" that can be one of the technological trends of
The present invention is effective for realizing "tay". That is,
Up to now, exchange users (telephone companies, etc.)
Add new functions such as screws depending on the exchange vendor
Had impacted the service as in the present invention
Users can add new functions without any
Develop functions and add service functions more quickly
It becomes possible. The present invention can be the basic technology
Things.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a module diagram showing a replacement software execution module according to the prior art. FIG. 2 is an example in which a service function is added using a patch in the related art. FIG. 3 is a functional block diagram showing an outline of a functional configuration of an exchange in the embodiment of the present invention. 4 is a flowchart showing the operation of the configuration shown in FIG. FIG. 5 is a module diagram showing an exchange software execution module according to the embodiment of the present invention. FIG. 6 is a block diagram illustrating a configuration of an exchange according to an embodiment of the present invention. FIG. 7 is a functional block diagram showing a detailed functional configuration of the exchange in the embodiment of the present invention. FIG. 8 is a flowchart showing processing for loading of a service control unit in the embodiment shown in FIG. 7; FIG. 9 is an example of plug-in area management data 78; FIG. 10 is an example of an activation function table 70; FIG. 11 is a flowchart illustrating a process of activating a service control unit and generating a linkage function table. FIG. 12 is a diagram showing a configuration of a linkage function table 60 and an operation of a function table generation program 79. FIG. 13 is a flowchart showing processing by an exchange control unit and a service activation program when a call for a certain service occurs. FIG. 14 is a diagram showing initial settings. FIG. 15 is a diagram showing a case where a free dial service is called from a subscriber. FIG. 16 is a diagram showing a case where a free dial service with a newly added function is added. FIG. 17 is a flowchart illustrating a procedure of plug-out processing. DESCRIPTION OF SYMBOLS 10, 80 Exchange software execution module 12 Service control program module group 14, 88 Exchange control program module group 16, 84 Common function program module group 18, 86 Maintenance operation program module group 20, 82 Operating system 30 Exchange 32 Exchange control units 33, 35 Patches 34, 56, 58, 76 Service control unit 36 Patch area 38, 40 Additional service program 42 Patch management unit 44 Software patch 46 Patch generation environment 50, 100 Switch 52 Exchange control unit 54 Service start unit 55 Service activation programs 57, 77 Service control programs 60, 92 Linkage function table 61 Plug-in memory area 62 Plug-in plug-out control unit 64 File environment 65 Activation Program 66 Service activation control section 67 Function table generation program 68 Plug-in Manager 69 Plug-in Loader 70 Activation function table 72 Call processing instance management section 74 Call function table 77 Service control program 78 Plug-in area management data 79 Function table Generation program 90 service activation program module group 94 execution module 110 main control device 111, 123 central processing device 112, 124 main storage device 113 input device 114, 121 external storage medium 115 external storage device 116, 122 inter-processor access control device 120, 130, 140 Call control device 125 Call path device 150, 160 Functions 1 to 3

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Shingo Kamuro             4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture             No. 1 Inside Fujitsu Limited F term (reference) 5B076 EA17                 5K024 AA00 AA45 BB04 GG00                 5K026 AA10 BB00 CC07 FF02 FF03                       FF04 FF23 GG12 GG15                 9A001 CC02 CC07 JJ12 LL05 LL09

Claims (1)

Claims: 1. In a switch controlled by a program, when a service program for executing a specific service is loaded, the service program executes the service of the service program in a predetermined case. The switchboard records a pointer to a function for performing the service in a first table, and when the use of the service is requested by a call, reserves a temporary storage area for each call, and refers to the first table. Holding the pointer obtained in the second table in the storage area, executing the function indicated by the pointer by referring to the pointer held in the second table, and providing a service. An exchange service control method characterized by the above-mentioned. 2. The exchange according to claim 1, further comprising data for managing an area occupied state of a storage area in which the service program is loaded and a state of the service program, and controlling the loading using the data.
Exchange service control method as described. 3. The predetermined case is when the exchange periodically monitors the loading to detect that the service program is loaded, or when an instruction is input by a command. 2. The switching service control method according to 1. 4. The switching service control method according to claim 1, wherein said service program is independently compiled and loaded. 5. A second call to be provided with a service by another service program when there is a first call executing the existing service program when replacing the existing service program with another service program. Occurs, the exchange newly secures the temporary storage area, holds a table of pointers to functions of the another service program in the storage area, and executes the function indicated by the pointer. 2. The switching service control method according to claim 1, wherein a service based on said another service program is provided for said second call. 6. The exchange service control method according to claim 1, wherein when the loaded service program is deleted from the exchange, the value of the first table is returned to a value before the service program is loaded. 7. An exchange controlled by a program, comprising: means for loading a service program for executing a specific service; and a first means for holding a pointer to a function of the service program for executing the service. Means for causing the service program to record a pointer to the function in the first table in a predetermined case; and temporarily storing, for each call, when there is a use request for the service by calling. Means for securing an area; means for holding the pointer obtained by referring to the first table in a second table in the storage area; and reference to the pointer held in the second table. Means for executing a function indicated by the pointer to provide a service. 8. The system according to claim 7, further comprising data for managing an area occupancy state of a storage area into which the service program is loaded and a state of the service program, and comprising means for controlling the loading using the data. Exchange. 9. The exchange has means for periodically monitoring the loading and command input means, and in the predetermined case, when the monitoring means detects that the service program is loaded, or 8. The exchange according to claim 7, wherein an instruction is input by a command. 10. When replacing a current service program with another service program and there is a first call that is executing the existing service program, a second call to be provided with a service by the different service program is issued. When this occurs, the exchange newly secures the temporary storage area and holds a table of pointers to functions of the another service program in the storage area, and executes the function indicated by the pointer. Means for providing service to said second call by said another service program. 11. The exchange according to claim 7, further comprising means for restoring the value of said first table to a value before said service program is loaded when said loaded service program is deleted from said exchange. 12. A recording medium storing a computer-readable exchange service control program for controlling services of an exchange controlled by the program, wherein a service program for executing a specific service is loaded on the exchange, and In this case, the service program records a pointer to a function for executing the service included in the service program in the first table. When there is a use request of the service by calling, a temporary storage area is provided for each call. The pointer obtained by referring to the first table is held in a second table in the storage area, and the pointer of the pointer is referred to by referring to the pointer held in the second table. Recording a switching service control program characterized by providing the service by executing the function shown in FIG. Media. 13. The data storage device according to claim 1, further comprising data for managing an area occupied state of a storage area to which said service program is loaded and a state of said service program, and controlling said loading using said data.
A recording medium recording the exchange service control program according to 2. 14. The predetermined case is when the exchange periodically monitors the loading and detects that the service program is loaded, or when an instruction is input by a command. 13. A recording medium recording the exchange service control program according to 12. 15. When replacing a current service program with another service program and there is a first call executing the existing service program, a second call to be provided with a service by the different service program is provided. When this occurs, the exchange newly secures the temporary storage area, holds a table of pointers to functions of the another service program in the storage area, and executes the function indicated by the pointer to execute the function indicated by the pointer. 13. A recording medium storing an exchange service control program according to claim 12, wherein a service according to said another service program is provided for a second call. 16. The switching service control program according to claim 12, wherein when the loaded service program is deleted from the exchange, the value of the first table is returned to a value before the service program is loaded. Recording medium. 17. A recording medium on which a computer-readable exchange service control program for controlling a service of an exchange controlled by a program is recorded, wherein a function for causing the exchange to execute a specific service is provided. A switching service including a program for recording a pointer to the function in a table in the exchange when the function is executed, wherein the function is executed by referring to the pointer recorded in the table by the exchange. A recording medium on which a control program is recorded.