Loniis işaretleşme sistemim ve bir sayısal santrala uygulanması

Abstract

Language (ASM51) on the digital trunk board using Intel 8032 microcontroller. Section 4.1.2.6 is about the role of the digital trunk board and its work. After giving trunk connections between exchanges in ex-USSR telephone network using LONIIS Signalling System and according to the thought connections to toll and local exchanges, signalling scenarios to be realized are given. Then software and firmware prepared for LONIIS Signalling System are briefly represented, firmware called LÎSAT on the digital trunk board being the main subject of this study. In section 5, firmware called LÎSAT on the digital trunk board is explained with its mechanism and its structure. Firmware LÎSAT uses finite state machine mechanism and has modular sructure containing 4 signalling modules : one for general definitions, one for incoming side, one for outgoing side and one for common side. Line and register signals, messages, states, variables and invariables used in these modules are given in tables with their explanations. Then, flow diagrams in SDL, prepared according to the signalling scenarios and signalling modules, are given and explained step by step. These diagrams give a better understanding of the signalling protocol and lead a structured programming.A telephone network is a service system which includes subscribers1 lines, telephone exchanges (switching nodes) and connection links between exchanges. Consequently, any exchange interconnecting local subscribers has connection to other exchanges via links. in a telephone network, signalling providing communication can be broken down into 2 well defmed areas : -Subscriber signalling -Interexchange signalling The subscriber signalling may be regarded as being basic function signalling, independent of the type of switching system and of the type of telephone network. Such signalling derives from the on-hook,off-hook conditions of the respective subscriber's telephone set giving rise to the following minimum signalling requirement: forvvard : - seizure -dialled adress information -clear forvvard backward: - answer -clear back As it is the only way of communication between different telephone exchanges, "interexchange signalling" is a very important subject. it is used to interchange cali information between exchanges in a telephone network. For the present purpose, "interexchange signalling" is briefly said "signalling". in the telephone network history, analogue transmission came first due to the unavailability of the necessary components to realize digital transmission. Due to recent developments in technology and digital techniques, digital transmission becomes used more frequently now. Although there are no restrictions to the use of öne of both multiplexing systems, FDM (Frequency viLanguage (ASM51) on the digital trunk board using Intel 8032 microcontroller. Section 4.1.2.6 is about the role of the digital trunk board and its work. After giving trunk connections between exchanges in ex-USSR telephone network using LONIIS Signalling System and according to the thought connections to toll and local exchanges, signalling scenarios to be realized are given. Then software and firmware prepared for LONIIS Signalling System are briefly represented, firmware called LÎSAT on the digital trunk board being the main subject of this study. In section 5, firmware called LÎSAT on the digital trunk board is explained with its mechanism and its structure. Firmware LÎSAT uses finite state machine mechanism and has modular sructure containing 4 signalling modules : one for general definitions, one for incoming side, one for outgoing side and one for common side. Line and register signals, messages, states, variables and invariables used in these modules are given in tables with their explanations. Then, flow diagrams in SDL, prepared according to the signalling scenarios and signalling modules, are given and explained step by step. These diagrams give a better understanding of the signalling protocol and lead a structured programming. (SDL, Specification and Description Language, is a CCITT recommended language suggested to the designers for a clear and precise representation of the telecommunication protocols) XISUMMARY LONIIS SIGNALLING SYSTEM AND ITS APPLICATION TO A DIGITAL TELEPHONE EXCHANGE A telephone network is a service system which includes subscribers1 lines, telephone exchanges (switching nodes) and connection links between exchanges. Consequently, any exchange interconnecting local subscribers has connection to other exchanges via links. in a telephone network, signalling providing communication can be broken down into 2 well defmed areas : -Subscriber signalling -Interexchange signalling The subscriber signalling may be regarded as being basic function signalling, independent of the type of switching system and of the type of telephone network. Such signalling derives from the on-hook,off-hook conditions of the respective subscriber's telephone set giving rise to the following minimum signalling requirement: forvvard : - seizure -dialled adress information -clear forvvard backward: - answer -clear back As it is the only way of communication between different telephone exchanges, "interexchange signalling" is a very important subject. it is used to interchange cali information between exchanges in a telephone network. For the present purpose, "interexchange signalling" is briefly said "signalling". in the telephone network history, analogue transmission came first due to the unavailability of the necessary components to realize digital transmission. Due to recent developments in technology and digital techniques, digital transmission becomes used more frequently now. Although there are no restrictions to the use of öne of both multiplexing systems, FDM (Frequency viLanguage (ASM51) on the digital trunk board using Intel 8032 microcontroller. Section 4.1.2.6 is about the role of the digital trunk board and its work. After giving trunk connections between exchanges in ex-USSR telephone network using LONIIS Signalling System and according to the thought connections to toll and local exchanges, signalling scenarios to be realized are given. Then software and firmware prepared for LONIIS Signalling System are briefly represented, firmware called LÎSAT on the digital trunk board being the main subject of this study. In section 5, firmware called LÎSAT on the digital trunk board is explained with its mechanism and its structure. Firmware LÎSAT uses finite state machine mechanism and has modular sructure containing 4 signalling modules : one for general definitions, one for incoming side, one for outgoing side and one for common side. Line and register signals, messages, states, variables and invariables used in these modules are given in tables with their explanations. Then, flow diagrams in SDL, prepared according to the signalling scenarios and signalling modules, are given and explained step by step. These diagrams give a better understanding of the signalling protocol and lead a structured programming. (SDL, Specification and Description Language, is a CCITT recommended language suggested to the designers for a clear and precise representation of the telecommunication protocols) XISUMMARY LONIIS SIGNALLING SYSTEM AND ITS APPLICATION TO A DIGITAL TELEPHONE EXCHANGE A telephone network is a service system which includes subscribers1 lines, telephone exchanges (switching nodes) and connection links between exchanges. Consequently, any exchange interconnecting local subscribers has connection to other exchanges via links. in a telephone network, signalling providing communication can be broken down into 2 well defmed areas : -Subscriber signalling -Interexchange signalling The subscriber signalling may be regarded as being basic function signalling, independent of the type of switching system and of the type of telephone network. Such signalling derives from the on-hook,off-hook conditions of the respective subscriber's telephone set giving rise to the following minimum signalling requirement: forvvard : - seizure -dialled adress information -clear forvvard backward: - answer -clear back As it is the only way of communication between different telephone exchanges, "interexchange signalling" is a very important subject. it is used to interchange cali information between exchanges in a telephone network. For the present purpose, "interexchange signalling" is briefly said "signalling". in the telephone network history, analogue transmission came first due to the unavailability of the necessary components to realize digital transmission. Due to recent developments in technology and digital techniques, digital transmission becomes used more frequently now. Although there are no restrictions to the use of öne of both multiplexing systems, FDM (Frequency viLanguage (ASM51) on the digital trunk board using Intel 8032 microcontroller. Section 4.1.2.6 is about the role of the digital trunk board and its work. After giving trunk connections between exchanges in ex-USSR telephone network using LONIIS Signalling System and according to the thought connections to toll and local exchanges, signalling scenarios to be realized are given. Then software and firmware prepared for LONIIS Signalling System are briefly represented, firmware called LÎSAT on the digital trunk board being the main subject of this study. In section 5, firmware called LÎSAT on the digital trunk board is explained with its mechanism and its structure. Firmware LÎSAT uses finite state machine mechanism and has modular sructure containing 4 signalling modules : one for general definitions, one for incoming side, one for outgoing side and one for common side. Line and register signals, messages, states, variables and invariables used in these modules are given in tables with their explanations. Then, flow diagrams in SDL, prepared according to the signalling scenarios and signalling modules, are given and explained step by step. These diagrams give a better understanding of the signalling protocol and lead a structured programming.