JP2984416B2 - Supplementary service control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call control system in a switching system having basic call control, and more particularly to a supplementary service control system.

[0002]

2. Description of the Related Art Conventionally, when trying to implement additional call control, an additional call control function has been embedded in the basic call control. That is, a basic call control function that is not changed is changed every time an additional call control function is added.

[0003]

In the above-described conventional control method, the additional functions and the basic functions are not independent, and the additional functions are not independent. Therefore, when an additional call control function is developed / changed, it is impossible to develop the function independently for each function, and the interface between the basic call (basic function) and the additional function is also fluid. There is a problem that it is difficult to automatically generate a program.

[0004]

According to the supplementary service control method of the present invention, when performing additional call control in a switching system having basic call control, the above-mentioned basic call control is performed by one.
It consists of a combination of basic unit processing, which is a unit processing until a transition to the next message input wait state after inputting and processing one message. The basic call control is based on an input message and an internal management state. The means for selecting and executing the processing, the means for giving an identifier by which each basic unit processing can be identified to the processing start point of all the basic unit processing of the basic call control, and the additional call control similarly At each processing start point in the basic call control, which is identified by the identifiable identifier, means for dividing the message into the basic unit processing and giving an identifier with which the processing start point can be identified. When input, first, the calling means for calling the analysis processing of the identifier, and the analysis processing of the identifier which can be identified by the basic unit processing, the identification processing of the identifier is also performed as an analysis result of the identifier. Alternatively, at the means for returning the processing continuation instruction and at the processing start point at which the basic unit processing is identified by the identifiable identifier, the basic unit processing is identified by the specified identifier based on the analysis processing result of the returned identifier. Processing for transitioning to a wait state in which the basic unit processing of basic call control can be activated, processing means for continuing the basic unit processing and instructing processing to transition to a wait state for the next message input, and the basic unit Analysis of identifiers that can be identified by processing
When the process starting point to be performed on this identifier that has started the analysis process is registered for the process identified by the identifiable identifier, the registration process is started and the value returned from the startup process is used as it is. Return means for returning to call control,
In the basic unit processing of the additional call control in which the processing start point is identified by the identifiable identifier, the basic unit processing of receiving the next input message to be processed after performing the additional unit processing of the call control A pair of an identifier number which can be identified and an identifier which can identify a processing start point which is a basic unit processing identifier of a supplementary service to be activated at that time is registered / deleted / In the means for performing the change and the basic unit processing of the additional call control,
Further, it is provided with means for judging a basic call control process to be continued and returning an identifier or a continuation instruction that can be identified by the basic unit process.

[0005]

In the present invention, the interface between the basic call (basic function) and the additional function is fixed, and the independence of the additional function from the basic function and the independence of the additional functions are enhanced.

[0006]

FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, 1 is a call control process unit, 2 is a function unit having functions such as a protocol control function and a resource management function, and 3 is a service analysis unit. Reference numeral 101 denotes a basic call control function unit that performs basic call control. The basic call control function unit 101 processes a basic call control by inputting one message and transitions to a wait state for the next message input. The basic call control consists of a combination of basic unit processing up to and including the input message and the internal management state, means for selecting and executing the basic unit processing and all basic unit processing of basic call control. Means for giving an identifier (hereinafter, referred to as a BID) that can be identified by each basic unit process to the process start point. 102 is BI
D analysis function unit; 103, an additional service control unit for performing additional call control; 103n, a basic unit processing unit for additional service control identified by an identifier (hereinafter, referred to as an SSID) by which a processing start point can be identified; 104 is a call control common live
Lari part. IM indicates an input message, OM indicates an output message, a and b indicate BID / continuation instruction, c indicates S
SID and d indicate SSID / continuation instruction.

The additional service control unit 103 (10
3n) constitutes means for similarly dividing the additional call control into basic unit processing and giving an identifier (SSID) by which the processing start point can be identified. Also, a basic call control function unit 101 for performing basic call control and a BID analysis function unit 102
, At all processing start points identified by the BID in the basic call control, when a message is input, the BI
At the calling means for invoking the D analysis processing and at the processing start point identified by the BID, a waiting state in which the basic unit processing of the basic call control identified by the designated BID can be started based on the returned BID analysis processing result And the processing means for continuing the basic unit processing as it is and issuing a processing continuation instruction for transitioning to a waiting state for the next message input.

Further, the BID analysis function unit 102
The analysis process is a means for returning a BID or a process continuation instruction as a BID analysis result, and the BID analysis starts the registration process if the process identified by the SSID to be performed on the BID that started the analysis process is registered. And return means for returning the value returned from the start-up processing to the basic call control as it is. Then, the BID analysis function unit 10
2 and the basic unit processing unit 103n of the additional service control identified by the SSID performs the additional processing of the call control in the basic unit processing of the additional call control identified by the SSID, and then performs the following processing. Means for registering / deleting / changing a BID analysis by pairing a BID number for receiving an input message to be received and an identifier for identifying a processing start point which is a basic unit processing identifier of an additional service to be activated at that time; In the basic unit processing of the additional call control,
A means for determining a basic call control process to be continued and returning a BID or a continuation instruction is configured.

[0009] In this switching system, the call control process unit 1 processes the message upon input of a message from a function unit 2 such as a protocol control function and a resource management function.
In some cases, basic call control is performed by an operation of outputting a message to the function unit 2. Here, the call control process unit 1 includes a basic call control function unit 101, a BID analysis function unit 102, an additional service control unit 103, and a call control common library unit 104. All of the input messages IM to the call control process unit 1 are input to the basic call control function unit 101, and the input causes the call control process unit 1 to start operating. All functions in the call control process unit 1 are configured so that the contents of the input message can be referred to as needed. On the other hand, the output message OM has a common part used also in the basic call control and an individual part used only in the additional call control, and it is necessary to edit the common part from information managed in the basic call control. Since the output of the message itself needs to be managed as basic call control information, the message common part editing function and the message output function are all provided in the call control common library unit 104 by the basic call control and additional The call control independence.

Next, the operation of the embodiment shown in FIG. 1 will be described. This exchange system has the following mechanism. That is, the basic call control function unit 101 is configured by a combination of basic unit processes. The basic call control function unit 101 has a mechanism for selecting and executing a basic unit process based on an input message and an internal management state. Also, an identifier (BID) that can identify each basic unit process is given to the processing start point of all the basic unit processes of the basic call control function unit 101. Similarly, the supplementary service control unit 103 divides the processing into basic unit processing and gives an identifier (SSID) by which the processing start point can be identified. Then, at all processing start points identified by the BID in the basic call control function unit 101, when a message is input, first, the BID
The analysis function unit 102 is called. This BID analysis function unit 1
02 returns the BID shown in a or the processing continuation instruction.

At the processing start point identified by the BID, the following processing is performed based on the returned BID analysis processing result. (A) BID: Transition to a wait state in which basic unit processing of basic call control identified by the designated BID can be started. (B) Processing continuation instruction: The basic unit processing is continued as it is, and a transition is made to a waiting state for the next message input. The BID analysis function unit 102 determines the BID that has started the analysis process.
If the process identified by the SSID to be performed is registered, the additional service control unit 103 is started to start the registration process (= 103n), and the value returned from the additional service control unit 103 is It is returned to the basic call control function unit 101 as it is.

After performing the additional call control unit processing, the basic unit processing unit 103n of the additional service control identified by the SSID, and then the BID number for receiving the next input message to be processed, and A pair of the basic unit processing identifier (SSID) of the supplementary service to be activated
Requests registration / deletion / change to the ID analysis function unit 102.
The basic unit processing unit 103n further determines the basic unit processing of the basic call control function unit 101 to be continued, and returns a BID or a continuation instruction as shown in b. The selection of the service function realized by the set of the basic unit processing units 103n of the additional service control identified by the SSID, that is, the determination of the SSID to start the service function is performed by the service analysis unit 3.

Now, two basic unit processing units 103n (1
03 ₁ and 103 ₂ ), there is shown an example of the flow of service execution when there is one service function. When the basic call control function unit 101 receives the message that triggers the start of the service, the basic call control function unit 10
1 selects and starts a basic unit process. The BID (=
10), the BID analysis function unit 102 is started. In the BID analysis function unit 102,
Determine the presence or absence of the SSID registered in the BID,
At first, the service analysis unit 3 is started because it is in an unregistered state. The service analysis unit 3 selects a service function to be activated, determines the first SSID (= 103 ₁ ), and sends the SSID (= 103 ₁ ) to the BID analysis function unit 102.
₁ ) Return. Then, BID analysis function unit 102 which has received the results from the service analyzer unit 3, supplementary service control unit 10 to start the basic unit processor 103 ₁ of supplementary service control identified by SSID in accordance with the result
Start 3 This additional service control unit 103 performs the basic unit processing unit 103 ₁ .

[0014] The basic unit processor 103 ₁ performs the following operations as the basic unit processes as a service function.
A message editing process is requested to the call control common library unit 104. After editing, the additional service control unit 10
3. The message itself is further processed. Call control common
In response to the request from the library unit 104, the message is transmitted to the function unit 2 such as the protocol control function and the resource management function. Then, SSID basic unit processor 103 ₁ of supplementary service control identified by the SSID indicating a subsequent following basic unit functions to be activated as a service function (= 10
3 ₂ ) and the BID number (= 11) as a pair
Register in the analysis function unit 102.

Further, as a service function, the basic call control function unit 101 should continuously perform processing of BID = 10, that is, processed an input message as a service. Should be performed or a transition to a wait state in which processing of a specific BID to be specified can be started, that is, since the input message was processed as a service, the processing of the input message is performed as basic call control. Determine if there is no need to do it and return the result. Now, temporarily, SSI
Basic unit processing unit 10 for additional service control identified by D
When a 3 ₁ a to be processed continually BID = 10, the basic unit processor 103 ₁ returns a continue instruction to the supplementary service control unit 103. The additional service control unit 103 outputs the result as it is to the BID analysis function unit 10.
Return to 2. Then, the BID analysis function unit 102 also returns the result as it is to the basic call control function unit 101.

This basic call control function unit 101 continuously
The processing of ID = 10 is performed, and the state transits to the waiting state. Then, in response to messages generated by the base unit processor 103 ₁ of supplementary service control identified by SSID sent, basic call control function unit 101 receives the message, BID =
11 is started. As the first process for this BID (= 11), the BID analysis function unit 102 is started.
The BID analysis function unit 102 determines whether or not there is an SSID registered in the BID, and sets SSID = 103 ₂
There since have been registered, activates the supplementary service control unit 103 to start the base unit processor 103 ₂ supplementary service control identified by the SSID. When the process of the basic unit processes as the basic unit processor 103 ₂ service functions added service control identified by the SSID is completed, to the entire service function is finished, BID analysis function unit the following SSID Do not register in 102.

Further, as the service function, the basic call control function unit 101 thereafter determines whether to continuously perform the processing of BID = 11 or to transition to a wait state in which the specified BID can be activated. And return the result. In this case, if, when as the basic unit processor 103 ₂ supplementary service control identified by SSID should transition to the wait state processing BID = 20 can be activated,
The basic unit processing unit 103 ₂ returns BID = 20 to the additional service control unit 103. Then, the additional service control unit 103 returns the result as it is to the BID analysis function unit 102. This BID analysis function unit 102 also
Further, the result is returned to the basic call control function unit 101 as it is. Then, the basic call control function unit 101
The state transits to a wait state in which the processing of D = 20 can be started.

In this manner, one service function constituted by the basic unit processing units 103 ₁ and 103 _{2 of the} additional service control identified by the SSID is completed.

[0019]

As described above, according to the present invention, the interface between the basic call (basic function) and the additional function is fixed, and the independence of the additional function from the basic function and the independence between the additional functions are improved. This has the effect of increasing the productivity of additional functions and facilitating automatic generation of programs.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Call control process part 101 Basic call control function part 102 BID analysis function part 103 Additional service control part 103n Basic unit processing part of additional service control identified by SSID 104 Call control common library part 2 Protocol control function, resource management function, etc. Function section 3 Service analysis section

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-48891 (JP, A) JP-A-3-74997 (JP, A) JP-A-3-60260 (JP, A) JP-A-1- 97095 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) H04M 3/42 H04Q 3/545

Claims (1)

(57) [Claims] In a switching system having basic call control, when performing additional call control, the basic call control is processed by inputting one message and transitioning to a waiting state for the next message input. The basic call control is a combination of basic unit processing, which is a unit process until the basic call control is performed, based on an input message and an internal management state. Means for giving an identifier by which each basic unit process can be identified to all processing start points of the basic unit process, and the additional call control is similarly divided into basic unit processes, and an identifier by which the process start point can be identified is given. Means and, at all processing start points identified by an identifiable identifier of the basic unit processing in the basic call control, first, when a message is input, an analysis process of the identifier is called. A calling unit for issuing the basic unit process, a process for returning the identifier or a process continuation instruction as an analysis result of the identifier, and a process for identifying the basic unit process by the identifier that can be identified. At the start point, based on the analysis processing result of the returned identifier, a process of transitioning to a wait state in which the basic unit process of the basic call control identified by the indicated identifier can be started, and the basic unit as it is. Processing means for issuing a processing continuation instruction to continue processing and shift to a wait state for the next message input; and analyzing the identifier that can be identified by the basic unit processing, the processing to be performed on this identifier that has started the analysis processing When the start point is registered for the process identified by the identifiable identifier, the registration process is started, and the value returned from the start process is used as is for basic call control. In the return means for returning and the basic unit processing of the additional call control in which the processing start point is identified by the identifiable identifier, after performing the additional call control unit processing, the next input message to be processed A pair of an identifier number that can be identified by the basic unit process that receives the ID and an identifier that can identify the process start point that is the basic unit process identifier of the supplementary service to be activated at that time, Register / delete / analyze in analysis
Means for making a change, and the basic unit processing of the additional call control further includes means for determining a basic call control processing to be continued and returning an identifier or a continuation instruction by which the basic unit processing can be identified. An additional service control method characterized by the following.