Practical Fundamentals of Voice over IP (VoIP) for Engineers and TechniciansLiving Online
In the past five years, technologies have converged to such an extent that one can transmit voice, fax and video over the same internet protocol network that one uses for data. This workshop examines Voice over IP (VoIP) technologies and provides you with the skills to competently implement a VoIP network for your organisation. Numerous case studies and exercises throughout the course ensure that you get a good grasp on the technologies used. Solid practical advice is given on application, implementation and most importantly troubleshooting these systems.
MORE INFORMATION: http://www.idc-online.com/content/practical-fundamentals-voice-over-ip-voip-engineers-and-technicians-3
a seminar paper presentation .this will help you know about voice transmission over the internet protocol's.as in Skype, watts app. it also give an idea about old technology. thanks. if any mistakes ,and add any updates and share with me .on about this slide
Radio over IP (RoIP) is a technology that has emerged over the last 10 years and has provided a powerful and flexible mechanism for linking radios and dispatch consoles. RoIP has some inherent limitations and numerous technical challenges. This workshop will provide an overview of the technology, the key standards and some of the technical issues.
The workshop will cover on the following issues:
- The difference between RoIP and VoIP — how radio systems differ from phone systems
- Implementing one-to-one connections
- Implementing many-to-many connections
- Risk management: identifying network issues affecting RoIP/VoIP quality, maintenance and redundancy
- Design elements: building blocks; calculating network bandwidth requirements
The implications of RoIP for dispatch consoles will be also be discussed: how dispatch console to radio connections can be implemented with RoIP and how RoIP can be used to provide fault-tolerant dispatch architectures.
Finally, the workshop will look at the impact of new technologies such as IPv6, wireless broadband and the switch to digital radio on the RoIP landscape.
Paul Whitfield, Team Leader: Software Engineering, Omnitronics
Introduction to VoIP, 2nd chapter of "Unified Communications with Elastix" Vol.1
We recommend to read the chapter along with the presentation.
http://elx.ec/chapter2
This session will provide a quick review of the methodology of early dispatch systems connected to radio, telephone and other resources via circuit switched interfaces such as 4WE&M, 2W analogue etc., and their restricted backhaul capabilities, leading on to the 'stand-alone' RoIP boxes that allowed 4W E&M to be converted to IP and recovered at the other end allowing backhaul via more flexible IP networks.
The next technology is dispatch systems with native IP connectivity allowing the most flexible and functional interfaces between the dispatch system and its connected resources. While some manufacturers equipment uses proprietary IP messaging, most prefer and use open standards such as P25 CSSI (console sub system interface), DFSI (digital fixed system interface) and ISSI (inter sub system interface) or the emerging DMR AIS which ensures that different vendors equipment can interoperate with each other via these interfaces. Open standards provide end users with greatly improved competitive choice and functional capability on these systems.
The session will explore examples of IP interfaces for voice dispatch systems and the functions supported, plus give a background on how these apply to many different technologies and can even be adapted for conventional radio applications:
The workshop will cover on the following issues:
- The difference between RoIP and VoIP - how radio systems differ from phone systems
- Implementing one-to-one connections
- Implementing many-to-many connection
- Risk management: Identifying network issues affecting RoIP/VoIP quality; maintenance; and redundancy
- Design elements :- building blocks; calculating network bandwidth requirements
The implications of RoIP for dispatch consoles will be also be discussed: how dispatch console to radio connections can be implemented with RoIP and how RoIP can be used to provide fault tolerant dispatch architectures.
Finally the workshop will look at the impact of new technologies such as IPv6, Wireless Broadband and the switch to Digital Radio on the RoIP landscape.
Les Scott, Manager, System Sales, Zetron
Hacking cable TV Networks Like Die hard MovieRahul Sasi
All demos are available here: http://vimeo.com/113053663
This is part of my DVB-C research I presented at , Nullcon, Ekoparty, HITB and GOS . In this paper we try to understand the Digital Video broadcasting standard and tries to find security vulnerabilities in design and implementation of dvb-c infrastructure.
Sip Trunking is a SIP (Session Initiation protocol) enabled phone line that is transferred over the internet. It is cost efficient way for businesses to get a flexible, functional, scalable phone system without any huge upfront cost. Often businesses are not prepared to switch to SIP Trunking. This presentation is intended to help businesses prepare for their transition from traditional phone system to VoIP phone system.
Practical Fundamentals of Voice over IP (VoIP) for Engineers and TechniciansLiving Online
In the past five years, technologies have converged to such an extent that one can transmit voice, fax and video over the same internet protocol network that one uses for data. This workshop examines Voice over IP (VoIP) technologies and provides you with the skills to competently implement a VoIP network for your organisation. Numerous case studies and exercises throughout the course ensure that you get a good grasp on the technologies used. Solid practical advice is given on application, implementation and most importantly troubleshooting these systems.
MORE INFORMATION: http://www.idc-online.com/content/practical-fundamentals-voice-over-ip-voip-engineers-and-technicians-3
a seminar paper presentation .this will help you know about voice transmission over the internet protocol's.as in Skype, watts app. it also give an idea about old technology. thanks. if any mistakes ,and add any updates and share with me .on about this slide
Radio over IP (RoIP) is a technology that has emerged over the last 10 years and has provided a powerful and flexible mechanism for linking radios and dispatch consoles. RoIP has some inherent limitations and numerous technical challenges. This workshop will provide an overview of the technology, the key standards and some of the technical issues.
The workshop will cover on the following issues:
- The difference between RoIP and VoIP — how radio systems differ from phone systems
- Implementing one-to-one connections
- Implementing many-to-many connections
- Risk management: identifying network issues affecting RoIP/VoIP quality, maintenance and redundancy
- Design elements: building blocks; calculating network bandwidth requirements
The implications of RoIP for dispatch consoles will be also be discussed: how dispatch console to radio connections can be implemented with RoIP and how RoIP can be used to provide fault-tolerant dispatch architectures.
Finally, the workshop will look at the impact of new technologies such as IPv6, wireless broadband and the switch to digital radio on the RoIP landscape.
Paul Whitfield, Team Leader: Software Engineering, Omnitronics
Introduction to VoIP, 2nd chapter of "Unified Communications with Elastix" Vol.1
We recommend to read the chapter along with the presentation.
http://elx.ec/chapter2
This session will provide a quick review of the methodology of early dispatch systems connected to radio, telephone and other resources via circuit switched interfaces such as 4WE&M, 2W analogue etc., and their restricted backhaul capabilities, leading on to the 'stand-alone' RoIP boxes that allowed 4W E&M to be converted to IP and recovered at the other end allowing backhaul via more flexible IP networks.
The next technology is dispatch systems with native IP connectivity allowing the most flexible and functional interfaces between the dispatch system and its connected resources. While some manufacturers equipment uses proprietary IP messaging, most prefer and use open standards such as P25 CSSI (console sub system interface), DFSI (digital fixed system interface) and ISSI (inter sub system interface) or the emerging DMR AIS which ensures that different vendors equipment can interoperate with each other via these interfaces. Open standards provide end users with greatly improved competitive choice and functional capability on these systems.
The session will explore examples of IP interfaces for voice dispatch systems and the functions supported, plus give a background on how these apply to many different technologies and can even be adapted for conventional radio applications:
The workshop will cover on the following issues:
- The difference between RoIP and VoIP - how radio systems differ from phone systems
- Implementing one-to-one connections
- Implementing many-to-many connection
- Risk management: Identifying network issues affecting RoIP/VoIP quality; maintenance; and redundancy
- Design elements :- building blocks; calculating network bandwidth requirements
The implications of RoIP for dispatch consoles will be also be discussed: how dispatch console to radio connections can be implemented with RoIP and how RoIP can be used to provide fault tolerant dispatch architectures.
Finally the workshop will look at the impact of new technologies such as IPv6, Wireless Broadband and the switch to Digital Radio on the RoIP landscape.
Les Scott, Manager, System Sales, Zetron
Hacking cable TV Networks Like Die hard MovieRahul Sasi
All demos are available here: http://vimeo.com/113053663
This is part of my DVB-C research I presented at , Nullcon, Ekoparty, HITB and GOS . In this paper we try to understand the Digital Video broadcasting standard and tries to find security vulnerabilities in design and implementation of dvb-c infrastructure.
Sip Trunking is a SIP (Session Initiation protocol) enabled phone line that is transferred over the internet. It is cost efficient way for businesses to get a flexible, functional, scalable phone system without any huge upfront cost. Often businesses are not prepared to switch to SIP Trunking. This presentation is intended to help businesses prepare for their transition from traditional phone system to VoIP phone system.
Quatrième partie de la formation C# du Club Microsoft Isep. Initiation à la programmation Windows et aux Windows Forms, création d'un navigateur Web. Exploration des concepts d'événements, héritage, placement et redimensionnement des contrôles dans une fenêtre.
Formation C# - Cours 2 - Programmation procéduralekemenaran
Deuxième partie de la formation C# du Club Microsoft Isep. Types de données, structures conditionnelles, structure de contrôle, utilisation de la console.
Formation C# - Cours 3 - Programmation objetkemenaran
Troisième partie de la formation C# du Club Microsoft Isep.
Fondements de la Porgramation Orientée Objet, introduction aux classes, méthodes et attributs par l'exemple.
Teknologi dan layanan IPTV di Indonesia relatif masih baru, bahkan PT Telekomunikasi Indonesia sebagai pionir layanan telekomunikasi baru mengimplementasikan IPTV pada awal tahun 2011. Presentasi inio akan memberikan wawasan tentang implementasi IPTV. (Oleh John Sihotang)
9.) audio video ethernet (avb cobra net dante)Jeff Green
Replacing a crossbar switch with ‘virtual’ IP packet switching - The ability to expand video-over-IP systems ‘one piece at a time’ and the decentralized nature of the matrix makes the technology very compelling for any size or scope of AV project.. AV-over-IP is the transport of AV signals over a standard Ethernet network, including…
HD Video (e.g. HDMI, DVI)
Audio
Control Signals (e.g. IR)
Peripheral Signals (e.g. USB)
Does Dante require special switches? No. We strongly recommend that Gigabit switches be used due to the clear advantages in performance and scalability.
Does Dante require a dedicated network infrastructure? No, a dedicated network infrastructure is not required. Dante-enabled devices can happily coexist with other equipment making use of the network, such as general purpose PCs sending and receiving email and other data.
Does Dante require any special network infrastructure? No, special network infrastructure is not required. Since Dante is based upon universally accepted networking standards, Dante-enabled devices can be connected using inexpensive off-the-shelf Ethernet switches and cabling.
What features are important when purchasing a switch? Dante makes use of standard Voice over IP (VoIP) Quality of Service (QoS) switch features, to prioritize clock sync and audio traffic over other network traffic. VoIP QoS features are available in a variety of inexpensive and enterprise Ethernet switches. Any switches with the following features should be appropriate for use with Dante:
Gigabit ports for inter-switch connections
Quality of Service (QoS) with 4 queues
Diffserv (DSCP) QoS, with strict priority
Totally new to AV over IT? This may help. If you have worked with any of the popular protocols, your time is better spent in other sessions. AV over IT methods vary in application of OSI model. Audio Networking - One RJ45 and CAT5 cable for dozens of signal paths. Switches can provide hardware time stamping which allows synchronization, offsets, and corrections. All covered in IEEE 1588.
Ethernet Timing & Priority Standards - All audio over Ethernet protocols require Priority, Sequence, & Sync
Differentiated Services / Quality of Service (DiffServ, QoS)
Priority by data type (Clock Sync and Audio Packets over Email)
Traffic prioritized based upon tags in IP Header (Layer 3)
Priority number assigned by manage switch to each packet
Real-time Transport Protocol (RTP)
Keeps data sequenced in the right order
Time stamp on UDP header
Works with RTCP (Real Time Control Protocol) for QoS and Sync
Variation: RTSP (Real Time Streaming Protocol) works on TCP and not UDP
Does not reserve resources or provide for quality of service
Precision Timing Protocol (PTP)
IEEE 1588
Sub-microsecond accuracy to synchronize subnets
Layer 2 - Switches provide hardware-based time stamping
2. HomePNA Introduction
• Home networking for triple play service providers
• Leading technology for TelcoTV in North America
• Around 10 million chipsets shipped worldwide
deployed in millions of homes
• Only two-wire home networking technology -- works
over coax and phone wires
• Only true high performance existing-wire home
networking standard, ITU G.9954
3. HomePNA Features
• 320Mbps Data Rate – the highest speed available
• Supports more high fidelity HDTV streams than any
other home networking standard shipping today
• Best in class guaranteed QoS for high fidelity jitter-
free IPTV
• TR-069 based Remote Management and Diagnostics
drive down support costs while maximizing customer
satisfaction
4. Triple-Play over Coax and/or Phone Wire Home
Networks
HPNA 3.1 HPNA 3.1
IP STB Ethernet
Adaptor
Service from
Telco and/or Bedroom Bedroom
DBS provider Low Cost
Passive Device
Balun
Coax cable HPNA 3.1 IP STB
with PVR
HPNA 3.1 HPNA 3.1
Residential 802.11 POTS or
HPNA 3.1
Phone Wire Gateway Bridge
VoIP
Phone
Den Kitchen
5. The HomePNA SIG
• Over 40 industry leaders including AT&T, Motorola,
Cisco, 2Wire, …
• Almost 30 certified products
• Standardized technology in ITU G.hn
• Support organization for service providers installing
HomePNA home networks.
6. Nothing Beats Experience …
• HomePNA is helping service providers shorten
installation times and minimize service calls
• We are often asked to advise on IPTV installation
procedures
• Members have observed numerous actual TelcoTV
installations with several service providers
• This has resulted in a growing best-practices
knowledge base and installation resources
