MSAT network architecture

The Mobile Satellite (MSAT) communications system will support mobile voice and data services using circuit switched and packet switched facilities with interconnection to the public switched telephone network and private networks. Control of the satellite network will reside in a Network Control System (NCS) which is being designed to be extremely flexible to provide for the operation of the system initially with one multi-beam satellite, but with capability to add additional satellites which may have other beam configurations. The architecture of the NCS is described. The signalling system must be capable of supporting the protocols for the assignment of circuits for mobile public telephone and private network calls as well as identifying packet data networks. The structure of a straw-man signalling system is discussed

Voice over IP

The area that this thesis covers is Voice over IP (or IP Telephony as it is sometimes called) over Private networks and not over the Internet. There is a distinction to be made between the two even though the term is loosely applied to both. IP Telephony over Private Networks involve calls made over private WANs using IP telephony protocols while IP Telephony over the Internet involve calls made over the public Internet using IP telephony protocols. Since the network is private, service is reliable because the network owner can control how resources are allocated to various applications, such as telephony services. The public Internet on the other hand is a public, largely unmanaged network that offers no reliable service guarantee. Calls placed over the Internet can be low in quality, but given the low price, some find this solution attractive. What started off as an Internet Revolution with free phone calls being offered to the general public using their multimedia computers has turned into a telecommunication revolution where enterprises are beginning to converge their data and voice networks into one network. In retrospect, an enterprise\u27s data networks are being leveraged for telephony. The communication industry has come full circle. Earlier in the decade data was being transmitted over the public voice networks and now voice is just another application which is/will be run over the enterprises existing data networks. We shall see in this thesis the problems that are encountered while sending Voice over Data networks using the underlying IP Protocol and the corrective steps taken by the Industry to resolve these multitudes of issues. Paul M. Zam who is collaborating in this Joint Thesis/project on VoIP will substantiate this theoretical research with his practical findings. On reading this paper the reader will gain an insight in the issues revolving the implementation of VoIP in an enterprises private network as well the technical data, which sheds more light on the same. Thus the premise of this joint thesis/project is to analyze the current status of the technology and present a business case scenario where an organization will be able to use this information

UJI COBA IMPLEMENTASI VOIP PADA JARINGAN TELKOMSEL FLASH

ABSTRAKSI: Seiring berkembangnya teknologi pada saat ini kebutuhan akan telekomunikasi menjadi hal yang tidak bisa dihindari. Salah satu layanan teknologi yang sedang menjamur adalah internet yang menyediakan banyak layanan didalammya.Telkomsel Flash adalah layanan berbasiskan Internet, Multimedia, dan layanan berbasiskan IP lainnya. Layanan ini meliputi : Internet berkecepatan tinggi, Internet dial up, TV kabel, VPN (Virtual Private Network), VoIP ( Voice over Internet Protocol ), dan lain-lain yang sudah menggunakan teknologi HSDPA.Voice over Internet Protocol adalah teknologi yang menjadikan media internet untuk bisa melakukan komunikasi suara jarak jauh secara langsung. Sinyal suara analog, diubah menjadi data digital dan dikirimkan melalui jaringan berupa paket-paket data secara real time.Proyek akhir ini akan mengintegrasikan Voice over Internet Protocol dengan Telkomsel Flash. Dengan mengimplementasikan Voice over Internet Protocol pada jaringan Telkomsel Flash, maka dapat dilakukan pengetesan kelayakan dari implementasi tersebut dengan mengukur QoS (Quality Of Service).Kata Kunci : HSDPA, Internet, VoIP, QoSABSTRACT: Along expand technological at the moment, the needed of telecommunications can’t be avoided. One of technology service is internet that provide a lot of service in there.Telkomsel Flash is a service based on Internet, Multimedia, and Other IP service. This service cover : High-Speed Internet, Internet dial Up, TV Cable, VPN ( Virtual Private Network), Voip ( Voice Over Internet Protocol ), and others used technology HSDPA.Voice Over Internet Protocol is a technology that used media internet to be able to communications voice in long distance directly. Analogous Sinyal voice, turned into digital data and delivered through network as data packets in real time.This Final Project will integrate Voice Over Internet Protocol with Telkomsel Flash. Implementation Voice Over Internet Protocol at Telkomsel Flash network, so can be conducted the testing of elegibility from the implementation by measuring QoS ( Quality Of Service).Keyword: HSDPA, Internet, VoIP, Qo

UNJUK KERJA PENERAPAN TEKNOLOGI VoIP PADA JARINGAN VPN (VIRTUAL PRIVATE NETWORK)

VoIP ( Voice over Internet Protocol ) is a technology used for communication in the form of IP based voice media over long distances. The concept of a VPN (Virtual Private Network) in this paper makes a client that is on the public network can be connected to a LAN network. To use the VoIP server in the Linux operating system Trixbox,  whereas for the VPN server using ClearOS and X-lite is used as a softphone to make calls to the client. Of testing at 64kbps bandwidth using the G711 codec produces value performance (delay, jitter, and packet loss ) is not good, so that voice data delivered is less clear. Thus the choice of bandwidth for the G.711 codec 512kbps up is the best solution to get the value of the performance (delay, jitter, and packet loss) better . And a choice of 3 Greed (low, medium, high) on setting bandwidth, high is the best option. Because it can produce the best performance for VoIP VPN technology

Journal of Telecommunications in Higher Education

In This Issue 6 Lead, Follow or Get Out of the Way! 12 Bringing Private Housing onto the Campus LAN 16 Bundling Internet Data and Voice Technologies on the Same T3 Span 20 Mission Possible: Harper College Equips for the Future 30 UCSD Maximizes Network with One-Wire Solution 34 Optical Fiber Helps Construct a Campus for the 21st Century 38 The Laptop Initiative at Longwood Colleg