Akıllı şebekeler ve geniş alan centrexi

Intelligent networks and area wide centrex service

Tez No: 39486
Yazar: ALTAY DOĞU
Danışmanlar: PROF.DR. GÜNSEL DURUSOY
Tez Türü: Yüksek Lisans
Konular: Elektrik ve Elektronik Mühendisliği, Electrical and Electronics Engineering
Anahtar Kelimeler: Akıllı şebekeler, İletişim sistemleri, İşaretleşme sistemi, Intelligence networks, Communication systems, Signalling system
Yıl: 1994
Dil: Türkçe
Üniversite: İstanbul Teknik Üniversitesi
Enstitü: Fen Bilimleri Enstitüsü
Ana Bilim Dalı: Belirtilmemiş.
Bilim Dalı: Belirtilmemiş.
Sayfa Sayısı: Belirtilmemiş.

Özet

Given the flurry of IN activity worldwide and the needs for IN standardization and evolution, the telecommunications industry has responded in the CCITT with a program of work that addresses global international IN standards and a framework for the standardized evolution of IN. The goal of CCITT program of work for IN is to define a new architectural concept that meets the needs of telecommunication service providers to rapidly, cost-effectively, and differentially satisfy their existing and potential market needs for services, and to improve the quality and reduce the cost of network service operations and management. In the study period ending in 1992, CCITT study groups completed the first phase of IN standardization, to include recommendations on the initial set of standardized IN capabilities, referred to as IN CS-1, and recommendations on target objectives, guidelines, and concepts to guide the evolution of IN. One of the applications of intelligent networks is the area wide centrex (AWC), which extends across the network those centrex features that up to now have been limited to lines served by a single switch. Without AWC, today's sophisticated centrex switches are essentially feature islands, supporting hundreds of station and system features on an intraswitch basis only. Feature transparency across the network offers a number of benefits to multilocation business customers, including : 1. Operational cost savings, with features such as network attendant services, 2. Higher call-closure rates, with such features as network ring again, 3. Improved control over communications costs, with features such as network station message detail recording, 4. Higher service load without increased operational costs, with such features as networked automatic call distribution. AWC enables operating companies to maintain centrex as an alternative to increasingly sophisticated private branch exchanges (PBX's) that support networked features. In addition, because of the enhanced value of centrex to many customers, operating companies have an opportunity to increase their revenues from their existing centrex customer base. Today, signaling system Rl is used almost exclusively in Turkey's telecommunication network. This system has fulfilled all the requirements to date. On the other hand, the need to offer new network services which require XIV

Özet (Çeviri)

SUMMARY INTELLIGENT NETWORKS AND AREA WIDE CENTREX SERVİCE Signaling in telecommunications network is the interchange of information between different functional parts of the telecommunications system. it includes ali the signals necessaıy for cali setup, cali take-down, cali metering, and others related to cali control. Signaling can be thought in three different areas; the transfer of information from subscribers to the switching machines, signaling within an exchange, and the transfer of information över the svvitched network. There are two basic fiınctions that the signaling system must carry out These are supervisory and selection functions. The supervisory conditions serve to detect ör change the state ör condition of some elements of the network and reflect the subscribers' on-hook/off-hook conditions. The selection function includes tiıe called party address information as well as the information necessary for the switching process to be carried out satisfactorily. There are two types of signaling between exchanges in terms of the transmission medium. These are channel associated signaling and common channel signaling. The first öne uses tiıe particular speech channel itself. Since signaling information related to ali speech channels can be transferred in öne multiframe, this kind of signaling is rather slow. The second öne uses a common channel for transferring the signaling information related to many speech channels. This common channel, enables the processors of tiıe switching machines to communicate each other directly at a very high speed. With stored program control, it is inefficient for the processor which works in the digital mode, to deal with analog signals on the speech path, so common channel signaling system provides a bi-directional high speed data link between two processors. Common channel signaling system number 7 (CCS7) is the last common channel signaling system that is introduced by CCITT. CCS7 is a signaling method in which a single channel conveys, by means of labeled xiGiven the flurry of IN activity worldwide and the needs for IN standardization and evolution, the telecommunications industry has responded in the CCITT with a program of work that addresses global international IN standards and a framework for the standardized evolution of IN. The goal of CCITT program of work for IN is to define a new architectural concept that meets the needs of telecommunication service providers to rapidly, cost-effectively, and differentially satisfy their existing and potential market needs for services, and to improve the quality and reduce the cost of network service operations and management. In the study period ending in 1992, CCITT study groups completed the first phase of IN standardization, to include recommendations on the initial set of standardized IN capabilities, referred to as IN CS-1, and recommendations on target objectives, guidelines, and concepts to guide the evolution of IN. One of the applications of intelligent networks is the area wide centrex (AWC), which extends across the network those centrex features that up to now have been limited to lines served by a single switch. Without AWC, today's sophisticated centrex switches are essentially feature islands, supporting hundreds of station and system features on an intraswitch basis only. Feature transparency across the network offers a number of benefits to multilocation business customers, including : 1. Operational cost savings, with features such as network attendant services, 2. Higher call-closure rates, with such features as network ring again, 3. Improved control over communications costs, with features such as network station message detail recording, 4. Higher service load without increased operational costs, with such features as networked automatic call distribution. AWC enables operating companies to maintain centrex as an alternative to increasingly sophisticated private branch exchanges (PBX's) that support networked features. In addition, because of the enhanced value of centrex to many customers, operating companies have an opportunity to increase their revenues from their existing centrex customer base. Today, signaling system Rl is used almost exclusively in Turkey's telecommunication network. This system has fulfilled all the requirements to date. On the other hand, the need to offer new network services which require XIVSUMMARY INTELLIGENT NETWORKS AND AREA WIDE CENTREX SERVİCE Signaling in telecommunications network is the interchange of information between different functional parts of the telecommunications system. it includes ali the signals necessaıy for cali setup, cali take-down, cali metering, and others related to cali control. Signaling can be thought in three different areas; the transfer of information from subscribers to the switching machines, signaling within an exchange, and the transfer of information över the svvitched network. There are two basic fiınctions that the signaling system must carry out These are supervisory and selection functions. The supervisory conditions serve to detect ör change the state ör condition of some elements of the network and reflect the subscribers' on-hook/off-hook conditions. The selection function includes tiıe called party address information as well as the information necessary for the switching process to be carried out satisfactorily. There are two types of signaling between exchanges in terms of the transmission medium. These are channel associated signaling and common channel signaling. The first öne uses tiıe particular speech channel itself. Since signaling information related to ali speech channels can be transferred in öne multiframe, this kind of signaling is rather slow. The second öne uses a common channel for transferring the signaling information related to many speech channels. This common channel, enables the processors of tiıe switching machines to communicate each other directly at a very high speed. With stored program control, it is inefficient for the processor which works in the digital mode, to deal with analog signals on the speech path, so common channel signaling system provides a bi-directional high speed data link between two processors. Common channel signaling system number 7 (CCS7) is the last common channel signaling system that is introduced by CCITT. CCS7 is a signaling method in which a single channel conveys, by means of labeled xiGiven the flurry of IN activity worldwide and the needs for IN standardization and evolution, the telecommunications industry has responded in the CCITT with a program of work that addresses global international IN standards and a framework for the standardized evolution of IN. The goal of CCITT program of work for IN is to define a new architectural concept that meets the needs of telecommunication service providers to rapidly, cost-effectively, and differentially satisfy their existing and potential market needs for services, and to improve the quality and reduce the cost of network service operations and management. In the study period ending in 1992, CCITT study groups completed the first phase of IN standardization, to include recommendations on the initial set of standardized IN capabilities, referred to as IN CS-1, and recommendations on target objectives, guidelines, and concepts to guide the evolution of IN. One of the applications of intelligent networks is the area wide centrex (AWC), which extends across the network those centrex features that up to now have been limited to lines served by a single switch. Without AWC, today's sophisticated centrex switches are essentially feature islands, supporting hundreds of station and system features on an intraswitch basis only. Feature transparency across the network offers a number of benefits to multilocation business customers, including : 1. Operational cost savings, with features such as network attendant services, 2. Higher call-closure rates, with such features as network ring again, 3. Improved control over communications costs, with features such as network station message detail recording, 4. Higher service load without increased operational costs, with such features as networked automatic call distribution. AWC enables operating companies to maintain centrex as an alternative to increasingly sophisticated private branch exchanges (PBX's) that support networked features. In addition, because of the enhanced value of centrex to many customers, operating companies have an opportunity to increase their revenues from their existing centrex customer base. Today, signaling system Rl is used almost exclusively in Turkey's telecommunication network. This system has fulfilled all the requirements to date. On the other hand, the need to offer new network services which require XIVSUMMARY INTELLIGENT NETWORKS AND AREA WIDE CENTREX SERVİCE Signaling in telecommunications network is the interchange of information between different functional parts of the telecommunications system. it includes ali the signals necessaıy for cali setup, cali take-down, cali metering, and others related to cali control. Signaling can be thought in three different areas; the transfer of information from subscribers to the switching machines, signaling within an exchange, and the transfer of information över the svvitched network. There are two basic fiınctions that the signaling system must carry out These are supervisory and selection functions. The supervisory conditions serve to detect ör change the state ör condition of some elements of the network and reflect the subscribers' on-hook/off-hook conditions. The selection function includes tiıe called party address information as well as the information necessary for the switching process to be carried out satisfactorily. There are two types of signaling between exchanges in terms of the transmission medium. These are channel associated signaling and common channel signaling. The first öne uses tiıe particular speech channel itself. Since signaling information related to ali speech channels can be transferred in öne multiframe, this kind of signaling is rather slow. The second öne uses a common channel for transferring the signaling information related to many speech channels. This common channel, enables the processors of tiıe switching machines to communicate each other directly at a very high speed. With stored program control, it is inefficient for the processor which works in the digital mode, to deal with analog signals on the speech path, so common channel signaling system provides a bi-directional high speed data link between two processors. Common channel signaling system number 7 (CCS7) is the last common channel signaling system that is introduced by CCITT. CCS7 is a signaling method in which a single channel conveys, by means of labeled xi

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