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.

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 Videoconferências: sistematização e experiências em telemedicina

2007 ◽  
Vol 40 (5) ◽  
pp. 341-344 ◽  
Author(s):  
Claudio Marcio Amaral de Oliveira Lima ◽  
Alexandra Maria Vieira Monteiro ◽  
Érica Barreiros Ribeiro ◽  
Silvia Maya Portugal ◽  
Leandro Sodré Xavier da Silva ◽  
...  
Keyword(s):  
Internet Protocol ◽  
Integrated Services ◽  
Integrated Services Digital Network ◽  
Digital Network

A telemedicina é definida como a troca de informações utilizando tecnologia de informação e de comunicação em saúde e a distância. Entre as diversas modalidades da telemedicina incluem-se as videoconferências, que permitem a integração em tempo real, recebendo e enviando áudio e vídeo de alta qualidade entre pontos distantes geograficamente. O objetivo deste trabalho é descrever, de maneira simplificada, os sistemas de videoconferências, destacando-se suas aplicações no contexto da telemedicina. Para a realização de videoconferências são necessários equipamentos que façam captura e reprodução de áudio e vídeo, e que tenham possibilidade de conexão com equipamentos similares, como microcomputadores e equipamentos dedicados. Os tipos de conexão para uma videoconferência são: via ISDN (integrated services digital network) ou via IP (internet protocol). A qualidade do áudio e do vídeo e a velocidade são críticas para o sucesso da videoconferência. Experiências internacionais na utilização de equipamentos de videoconferência, inclusive na radiologia e diagnóstico por imagem, já são uma realidade. No Brasil, relatos mostram iniciativas isoladas de telemedicina, em sua maioria incluindo redes universitárias. A videoconferência representa uma excelente ferramenta para a capacitação e atualização do profissional médico, além de proporcionar grande impacto nos custos do atendimento à população.

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