scholarly journals Description of the process of tunneling Q signaling in private telecommunication networks

2021 ◽  
Vol 69 (1) ◽  
pp. 31-63
Author(s):  
Slađan Svrzić ◽  
Zoran Miličević ◽  
Zoran Perišić
Keyword(s):  
Armed Forces ◽  
Integrated Services ◽  
Packet Transmission ◽  
Telecommunication Networks ◽  
Circuit Switching ◽  
Core Network ◽  
Audio Signals ◽  
Ip Network ◽  
Telecommunications Network ◽  
Audio Information

Introduction/purpose: The article should specify the network signaling type Q-SIG, which is standardized especially for implementation in digital telecommunication networks of integrated services (ISDN), emphasizing the possibility of its further application in the Private Telecommunications Network of Integrated Services of the Serbian Armed Forces (PISN of SAF), i.e. in the Private Automatic Telephone Network of the Serbian Armed Forces (PATN of SAF). Methods: An analysis of the existing standards was performed: ECMA355 and ECMA-336 and a synthesis of the possibilities of their application in the PATN of SAF. Results: The procedure for the application of Q-SIG is processed in a situation when the peripheral parts of the PISN of SAF, which operate on the principle of transmission and circuit switching by TDM (Time Division Multiplexing), are connected via a central Core network with the IP (Internet Protocol), which operates on the principle of packet transmission and switching with the SIP (Session Initiation Protocol). A method of the application of the tunneling of encapsulated Q-SIG messages through the IP network, defined by ECMA-355 Standard, has been developed. The necessary functions for mapping the transmission of tunneled signaling messages Q-SIG and mapping voice (and other audio) information to media streams during VoIP (Voice over IP) communication through that network, which are defined by ECMA-336 Standard, are described. Conclusion: The application of ECMA-355 and ECMA-336 Standards is a new solution in the PATN of SAF with the use of the IP network to connect the IP PINX using the Q-SIG tunneling procedures and mapping functions for their transmission and transmission of audio signals. This then opens up a whole range of new possibilities that, with the growth of the Core network and their application, will rapidly contribute to the creation of a broad Telecommunication information system backbone for the implementation of real-time multimedia communications and the transition to Unified Communications (UC).

scholarly journals Transmission of Q-signaling by the tunneling procedure in the automatic telephone network of integrated services of the Serbian Armed Forces

2022 ◽  
Vol 70 (1) ◽  
pp. 169-206
Author(s):  
Slađan Svrzić ◽  
Julijan Bojanov
Keyword(s):  
Telecommunication Network ◽  
Armed Forces ◽  
Integrated Services ◽  
Telephone Network ◽  
Circuit Switching ◽  
Core Network ◽  
Digital Network ◽  
Ip Network ◽  
Audio Information ◽  
Time Division

Introduction/purpose: To specify the practical application of ECMA355 and ECMA-336 Standards for Q-SIG tunneling and the implementation of mapping functions via the existing IP (Internet Protocol) network of the Serbian Armed Forces (Intranet SAF), in the Private Automatic Telephone Network SAF (PATN SAF), as the main part of the Private telecommunication-information networks of integrated services SAF (PISN SAF). Methods: Description of the implemented solution and analysis of the software parameters of the established transmission SIP route, with the display of the results obtained in the fight with jitter and echo in the network. Results: With such a solution, it was achieved that participants from the peripheral parts of the PISN SAF, which operate on the principle of transmission and circuit switching by TDM (Time Division Multiplexing), can connect with each other via the newly established central IP network SAF (Core network) which operates on the principle of transmission and switching packets with the SIP (Session Initiation Protocol), without losing the functionality of QSIG from the framework of the digital telecommunication network of integrated services ISDN (Integrated Services Digital Network). Conclusion: The article deals with the modern IP PINX (Private Integrated Services Network Exchange) manufactured by Mitel, type MX-ONE Service Node 6.0, which is implemented at the transit level PATN SAF and which successfully implements the process of tunneling Q-SIG through the IP network and the necessary functions for mapping the transmission of tunneled QSIG messages and mapping voice (and other audio) information to VoIP (Voice over IP) communication media streams through that network. Also, the basic elements for its software preparation during the introduction of a new SIP route, with a capacity of 30 IP trunks in a transmission beam realized with 100 Mb/s-T Ethernet, are given, and the fight with the present jitter and echo in the network is described. Finally, the paper presents the experience-based values of the parameters for reducing the influence of jitter and suppressing echo.

Projects Improving QoS of the Voice Real-Time Data Based on IP Network

2012 ◽  
Vol 220-223 ◽  
pp. 2471-2474
Author(s):  
Jin Hua Liang ◽  
Xuan Zen
Keyword(s):  
Mixed Model ◽  
Integrated Services ◽  
Differentiated Services ◽  
Small Scale ◽  
Time Data ◽  
Delay Jitter ◽  
Model Combining ◽  
Ip Network ◽  
Scale Network ◽  
The Voice

The reasons influencing the VoIP QoS include transmission delay, jitter and data packet drop. The main measures improving the VoIP QoS are the integrated services and the differentiated services. But the integrated service is only suitable for the small-scale network, and the differentiated services can’t guarantee QoS from the source end to the destination end for every IP data stream alone. The paper sets forth a kind of mixed model combining integrated Services with differentiated Services to support the VoIP QoS on the bases analysis of their defects.

Urban Telecommunications Network

2010 ◽  
pp. 77-90 ◽  
Author(s):  
Tan Yigitcanlar ◽  
Hoon Jung Han
Keyword(s):  
Quality Of Life ◽  
Urban Infrastructure ◽  
Telecommunication Networks ◽  
Location Based Services ◽  
Infrastructure Management ◽  
Late 20Th Century ◽  
Digital Devices ◽  
Telecommunications Network ◽  
Recent Developments

Rapidly developing information and telecommunication technologies and their platforms in the late 20th Century helped improve urban infrastructure management and influenced quality of life. Telecommunication technologies make it possible for people to deliver text, audio and video material using wired, wireless or fiber-optic networks. Technologies convergence amongst these digital devices continues to create new ways in which the information and telecommunication technologies are used. The 21st Century is an era where information has converged, in which people are able to access a variety of services, including internet and location based services, through multi-functional devices such as mobile phones. This chapter discusses the recent developments in telecommunication networks and trends in convergence technologies, their implications for urban infrastructure planning, and for the quality of life of urban residents.

The Comparison between WLAN and Femtocell

2012 ◽  
pp. 34-53
Author(s):  
Rashid A. Saeed ◽  
Mohammad Hasan ◽  
Rania A. Mokhtar
Keyword(s):  
Cellular Network ◽  
Communication Link ◽  
Area Network ◽  
Core Network ◽  
Wide Area Network ◽  
Digital Subscriber Line ◽  
Asymmetric Digital Subscriber Line ◽  
Public Network ◽  
Ip Network ◽  
Similarities And Differences

The communication link of femtocell may be one of Wide Area Network (WAN) technologies, such as, Asymmetric Digital Subscriber Line (ADSL). Femtocell used a public network to establish connectivity between femtocell and core network elements where there are a set of challenges to the operators. However, femtocells use IP Network as a backhaul architecture instead of conventional cellular network infrastructure, so that Femtocells and WiFi infrastructure networks can come to a compromise as they have a lot of common iterative and inter-related technologies and activities. This raises the question as to whether femtocell technology will substitute the existing WiFi technology. By carefully analyzing the similarities and differences between the two technologies one can find this answer. This chapter provides a technical comparison between Femtocells and WiFi in terms of architecture, operation, and standards.

Research on Intercom System for Stage Dispatch Console Based on IP Network

2013 ◽  
Vol 846-847 ◽  
pp. 421-424
Author(s):  
Hui Ren ◽  
Qian Yi Yang ◽  
Xue Jun Zhao ◽  
Tian He Zhao
Keyword(s):  
Software Framework ◽  
Circuit Switching ◽  
Functional Requirements ◽  
Stage Manager ◽  
Ip Network ◽  
Key Technologies ◽  
Stage Performance ◽  
Network Technologies ◽  
Intercom System ◽  
Ip Communication

Traditional theatre dispatch platform, which is designed by circuit switching technology, has its limitation and disadvantages. So this paper proposed an effective intercom system for stage dispatch console based on IP network. We analysed its functional requirements, hardware and software framework, and the key technologies during IP communication. Various network technologies can be synthetically used, so as to realize IP integration for the whole system. Our study is of great significance in providing stage manager with fast and centralized information, which can help improving the stage performance.

scholarly journals Analysis of the probability of connectivity of a telecommunications network based on the reduction of several non-connectivity events to a union of independent events

2021 ◽  
pp. 53-63
Author(s):  
Aleksandr Batenkov ◽  
Kirill Batenkov ◽  
Aleksandr Fokin
Keyword(s):  
Network Connectivity ◽  
Telecommunication Networks ◽  
Huge Number ◽  
Connectivity Probability ◽  
Independent Events ◽  
Telecommunications Network ◽  
Probability Of Connectivity ◽  
Analytical Relations ◽  
Sums Of Products ◽  
Routine Procedures

Introduction: For large and structurally complex telecommunication networks, calculating the connectivity probability turns out to be a very cumbersome and time-consuming process due to the huge number of elements in the resulting expression. The most expedient way out of this situation is a method based on the representation of a network connectivity event in the form of sums of products of incompatible events. However, this method also requires performing additional operations on sets in some cases. Purpose: To eliminate the main disadvantages of the method using multi-variable inversion. Results: It is shown that the connectivity event of a graph should be interpreted as a union of connectivity events of all its subgraphs, which leads to the validity of the expression for the connectivity event of the network in the form of a union of connectivity events of typical subgraphs (path, backbone, and in general, a multi-pole tree) of the original random graph. An iterative procedure is proposed for bringing a given number of connectivity events to the union of independent events by sequentially adding subgraph disjoint events. The possibility of eliminating repetitive routine procedures inherent in methods using multi-variable inversion is proved by considering not the union of connectivity events (incoherence) degenerating into the sum of incompatible products, but the intersection of opposite events, which also leads to a similar sum. However, to obtain this sum, there is no need to perform a multi-variable inversion for each of the terms over all those previously analyzed. Practical relevance: The obtained analytical relations can be applied in the analysis of reliability, survivability or stability of complex telecommunications networks.

scholarly journals Researching the Impact of Parameters of the Developed Routing Models on Network Performance

2017 ◽  
Vol 4 (1) ◽  
pp. 61 ◽  
Author(s):  
Mohammad Alhihi ◽  
Hani Attar ◽  
Mohammad Samour ◽  
Artem Akulynichev
Keyword(s):  
Network Performance ◽  
Structural Model ◽  
Data Gathering ◽  
Oriented Graph ◽  
Telecommunication Networks ◽  
High Quality ◽  
Network Maintenance ◽  
Telecommunications Network ◽  
Routing Methods ◽  
The Impact

Nowadays, it is hard to imagine work without applying the principle of computer networks, and every day the requirement for high-quality network maintenance is increasing. In order to have a high-quality network; always optimize QoS through the optimization of routing protocols is required. In this paper, the scientific task of optimizing routing processes in hybrid telecommunication networks with guaranteed quality of service is solved by developing models and methods of adaptive routing. To develop methods, a system of Telecommunications network (TN) mathematical models was constructed at the levels of its morphological and functional descriptions. We used a weighted oriented graph as a structural model. Formalization of the main indicators of the network operation efficiency is carried out, which are the network performance (or its derivatives – relative and normalized performances) and indicators of the degree of use of network resources – buffer memory capacities of nodes and bandwidth of the transmission paths. In this paper, an experimental study of the developed models and routing methods was carried out in order to verify their adequacy, evaluate the effectiveness, and develop practical recommendations. The scheme of experiment, focusing on the investigation of processes occurring in the network while solving routing tasks (data gathering, RT processing, distribution, and implementation), is proposed.

Design of High Capacity Survivable Networks

2007 ◽  
pp. 1-19
Author(s):  
Varadharajan Sridhar ◽  
June Park
Keyword(s):  
Network Architecture ◽  
High Capacity ◽  
Cost Effective ◽  
Telecommunication Networks ◽  
Survivable Networks ◽  
Network Nodes ◽  
Network Cost ◽  
Telecommunications Network ◽  
Terminal Reliability ◽  
Network Component

Survivability, also known as terminal reliability, refers to keeping at least one path between specified network nodes so that some or all of traffic between nodes is routed through. Survivability in high capacity telecommunication networks is crucial as failure of network component such as nodes or links between nodes can potentially bring down the whole communication network, as happened in some real-world cases. Adding redundant network components increases the survivability of a network with an associated increase in cost. In this chapter we consider the design of survivable telecommunications network architecture that uses high-capacity transport facilities. The model considers selection of capacitated links and routing of multicommodity traffic flow in the network that minimizes overall network cost. Two node disjoint paths are selected for each commodity. In case of failure of the primary path, a portion of the traffic for each commodity is rerouted through the secondary path. The methodology presented in this chapter can be used by the network designer to construct cost-effective high capacity survivable networks.

A Design of IP PBX Phone System

2012 ◽  
Vol 588-589 ◽  
pp. 1222-1225
Author(s):  
Xin Song ◽  
Ming Huan Lian
Keyword(s):  
Ip Network ◽  
Forward Transfer ◽  
Telecommunications Network ◽  
Black List ◽  
Function Code

In order to integrate the telecommunications network and IP network, providing companies with a unified voice services, a design of IP PBX phone system is proposed. On the basis of VoIP, this design implements most of the traditional PBX functions. It provides function-code functionality allows user to directly control phone; provides user-trunk-LLDC configurations to manage user’s privilege; provides a powerful and flexible IVR system; provides SIP phone and SIP trunk support. It also supports most call features such as black list, speed dial code, forward, transfer, pick-up, can meet most companies’ requirements.

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