Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
Reexamination Certificate
1998-04-09
2001-07-24
Smith, Creighton (Department: 2642)
Telephonic communications
Plural exchange network or interconnection
Interexchange signalling
C379S221050, C379S207030
Reexamination Certificate
active
06266406
ABSTRACT:
TECHNICAL FIELD
The invention concerns a method for communicating between a service switching exchange of a telecommunication network to which service calls requesting the execution of a service for a subscriber of the telecommunication network are routed, and a service control facility, which controls the execution of the requested service. The invention is also directed to a service control facility for connecting to one or several service switching exchanges of a telecommunication network where the service control facility contains means for receiving service requests that request the execution of a service for a user of the telecommunication network from at least one of the service switching exchanges of the telecommunication network.
Telecommunication services can be provide according to the Intelligent Network Architecture.
BACKGROUND OF THE INVENTION
A user of a telecommunication network requests a service by dialing the number dedicated to the service. The call with this number is routed through the telecommunication network to a service switching exchange which recognize this call as call requesting the service. Then, this service switching exchange communicates via a data network with a service control facility, the so called service control point. This service control point contains a service logic which contains a description of the method that has to be executed to provide the service to the calling user. By a request of the service switching exchange the execution of this method by the service logic is initiated and the requested service is provided to the requesting user.
This service logic is realized as a single process handling all calls one after the other. Each of them going through a single queue. Each call is associated with a context allowing the state of the call not to be lost between user interaction. The service is executed through a finite state machine, taking as input the TCAP message as the context of the call.
The disadvantage of this architecture of provisioning services is that within the service control facility an incoming request for a service has to wait for execution until the current one has been processed out. Therefore, the rate of service requests that can be handled by the service control facility is strictly limited.
SUMMARY OF THE INVENTION
Accordingly, it is a primary objective of the present invention to increase the number of service requests that can be handled by a processing node that is involved in the execution of services for users of an telecommunication network.
This objective is solved by a method for communicating between a service switching exchange of a telecommunication network, to which service calls requesting the execution of a service for a subscriber of the telecommunication network are routed, and a service control facility, which controls the execution of the requested service, wherein the service switching exchange interacts with at least one object of the service control facility via a transaction capability application part protocol, that each such object interacts and communicate via an object infrastructure with other objects in a object oriented computing environment within the service control facility, and that the interface of each such object maps the primitives of the transaction capability application part protocol onto the internal interface description of such object.
The objective is also solved by a service control facility for connecting to one or several service switching exchanges of a telecommunication network, where the service control facility contains means for receiving service requests that request the execution of a service for a user of the telecommunication network from at least one of the service switching exchanges of the telecommunication network, wherein the service control facility contains at least one object interacting and communicating via an object infrastructure with other objects in a object oriented computing environment within the service control facility, that the at least one object contains means for interacting with the at least one service switching exchange via an transaction capability application part protocol, and that the at least one object contains an interface that maps the primitives of the transaction capability application part protocol onto the internal interface description of the at least one object.
The underlying idea of this invention is to use for the realization of the data processing in a service control facility an object oriented approach with objects that interact on top of an object infrastructure and realize the communication between these object and the service switching functions of a service switching exchange via a transaction capability application part protocol. The objects mimic an interface for this protocol over the internal interface description.
Therefore, the service architecture is no longer based on a functional design and technologies like multithreading or multi processing can be applied.
Further, the one to one relationship from the service switching exchange to the service implementation is replaced by a one to many.
Due to the introduction of a object oriented computing environment and the special object design described above, the processing of the service requests can be distributed and thus highly scalable and IT platform independent. The redesign of the service logic according to this approach allows for easy service interworking personalization, distribution and maintainability of the software. The design pattern allows all the benefits from object oriented programming to be realized.
Furthermore, it allows multithreading. The direct benefit is that a service session, that means the processing of a service request, is not blocked by the execution of another one.
A communication made according to the invention has further advantages compared with the more usual approach to make a direct mapping between the transport protocol INAP and the interface description IDL; that is, this approach needs a heavier chain tool and does not envision the configuration of the network.
REFERENCES:
patent: 5463682 (1995-10-01), Fisher et al.
patent: 9534175 (1995-12-01), None
“Distribution of Service Data to Distributed SCPs in the Advance IN” by Kusaura et al. Nov. 14, 1995, Singapore, pp. 1272-1276.
“Distributed Control Node Architecture in the Advanced Intelligent Network”, by Hirano et al. Apr. 23, 1995, Berlin, Germany, pp. 278-282.
“Signalling in the Intelligent Network” by Bale. Vol. 13, No. 2, Apr. 1995 Ipswich, GB. pp. 30-42.
“CORBA: A Common Touch for Distributed Applications” by Tibbitts. vol. 24, No. 7, May 21, 1995, New York, US, pp. 71-75.
Couturier Alban
Mercouroff Nicolas
Alcatel
Smith Creighton
Ware Fressola Van der Sluys & Adolphson LLP
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