1 VoIP and Videoconferencing: are they the same? Dr. Saverio Niccolini Research Staff Member Network Laboratories, NEC Europe Ltd.
2 VoIP and Videoconferencing 1 st remark: I would like to speak about IP Telephony instead of VoIP (without changing the title) in my opinion they are not exactly the same and there is much confusion about it please refer to what I wrote on the GNRT on such a topic VoIP TNC POZNAN - JUNE
3 Differences? Are they so different? With IP Telephony (or VoIP, as you want), the main focus is always on voice services this is not the complete story talking only about voice is misleading regarding the support of video IP Telephony standards and protocols have the capability to signal and are able to initiate multimedia communication» what about H.323?» what about SIP? IP Telephony technologies/standards and videoconferencing solutions may be seamlessly integrated actually they are based on the same recommendations VoIP TNC POZNAN - JUNE
4 H.323 protocol What about H.323 HW/SW? (Netmeeting, Polycom systems, etc.) they are based on the H.323 protocol you can call other endpoints using them (voice and video depending on endpoint capabilities) if you have a gateway you can use them to make PSTN calls (voice and video, depending on endpoint and gateway capabilities) videoconferencing capabilities are built-in in the protocol itself VoIP TNC POZNAN - JUNE
5 SIP protocol What about SIP HW/SW (eyebeam, Polycom systems, minisip) it is based on SIP protocol you can call other endpoints using them (voice and video depending on endpoint capabilities) if you have a gateway you can use them to make PSTN calls (voice and video, depending on endpoint and gateway capabilities) videoconferencing capabilities are built-in in the protocol itself VoIP TNC POZNAN - JUNE
6 What should we achieve then? The goal should be to provide the user with: a global architecture derived from IP Telephony standards (H.323, SIP, ENUM, TRIP, etc.) enabling videoconferencing systems to be used on top of it seamlessly perfect videoconferencing sessions are achieved when the technology is no longer noticeable (neither before nor during the session) improvements in the architecture» it has to be as simple as make a PSTN phone call» application-specific devices to deliver the content to the end-user VoIP TNC POZNAN - JUNE
7 Where do we need improvements? Global architecture to enable seamless integration (still some conflicts between the PSTN world and the IP one to be solved) Accessibility and usability of the system Interoperability among different technologies Value-added services, such as data/application-sharing and voice mail VoIP TNC POZNAN - JUNE
8 What does it mean? Discussions at architectural level Gateways to provide interoperability with different access types example: not all gateways support video nowadays Gateways/bridges to provide interoperability among different IP Telephony protocols example: H.323 users may not be able call SIP users example: H.323 additional services may not be compatible with SIP additional services Conference bridges and multipoint conferencing units to provide capabilities for multipoint conferencing example: this is a service already available in H.323, SIP has not yet good application servers for this task, need bridging from SIP to H.323 to achieve this VoIP TNC POZNAN - JUNE
9 What is the state of the art? Example (SURFNET office): VoIP TNC POZNAN - JUNE
10 What is the state of the art? Example (NEC Network Laboratories): eyebeam/x-lite SIP Clients NAT STUN Server for NAT traversal FW WiFi SIP Client Private SIP Proxy (Default Outbound Proxy and B2BUA for NAT/FW traversal with video support using rtpproxy) DMZ Public Internet PSTN office phone Asterisk PSTN-IP Gateway PBX VoIP TNC POZNAN - JUNE
11 SIP Deployment at NEC Europe Ltd. Network Laboratories in Heidelberg (http://www.netlab.nec.de/) Saverio s SIP Client-A 3 SIP Proxy 3 PSTN-IP Gateway 3 PBX 3 Saverio s office phone Pool WIFi SIP Client-B Inbound call 0. Someone decides to call me at my office number ( ) 1. The call arrives at NEC PBX in Heidelberg and forwarded to my phone 2. I am away, I have configured an entry to forward the call to my SIP client (my phone does not ring) 3. The call is redirected to the SIP gateway (to the number associated to my SIP client (be it my software client or the WiFi pool phone) We have not yet configured ENUM, thus no ENUM entry for such a number (gateway just configured statically to handle such redirected calls) VoIP TNC POZNAN - JUNE
12 SIP Deployment at NEC Europe Ltd. Network Laboratories in Heidelberg (http://www.netlab.nec.de/) Saverio s SIP Client-A 0 SIP Proxy 2b PSTN-IP Gateway 2b PBX 0 1 2c 2a 2c 2b Pool WIFi SIP Client-B Bob s SIP Client PSTN number Colleague's office phone Outbound calls 0. No matter where I am I register to my SIP proxy and I dial the numbers on my SIP clients as I was in the office (0 to exit, etc.) 1. I can call both SIP address, internal numbers and PSTN numbers (configuration of SIP proxy takes care of this) 2. The SIP proxy authorize me and routes my call 2a. SIP-to-SIP: I am only using Internet connection 2b. SIP-to-internal: I am calling my colleagues using internal numbers (65, 39, 32, etc.) 2c. SIP-to-PSTN: I can call all the world as I was in my office (I make a local call in Germany thus my company is happy) VoIP TNC POZNAN - JUNE
13 What is the state of the art? Web server SPADA project domain: spadatel.org H.323 User Agents MGCP User Agents GnuGK in full proxy mode To/From H.323 GDS Master DB Master DNS Slave DNS Asterisk translation server Inbound Proxy (no rtpproxy yet) Sip server Sip server Voic Conferencing Billing Server (B2BUA under development) Other SIP domains PSTN GW Local database Outbound proxy with nathelper pstn SIP User Agents VoIP TNC POZNAN - JUNE
14 What is the state of the art? Another example: PolyPhone service at ETH Zurich lots more (not mentioned) VoIP TNC POZNAN - JUNE
GFI White Paper Sending faxes in real time over an IP network How to benefit from Fax over Internet Protocol (FoIP) to send faxes This technical white paper gives an introduction to Fax over Internet Protocol
What is SIP? What s a Control Channel? History of Signaling Channels Signaling and VoIP Complexity Basic SIP Architecture Simple SIP Calling Alice Calls Bob Firewalls and NATs SIP URIs Multiple Proxies
How Small Businesses Can Use Voice over Internet Protocol (VoIP) Internet Technology for Voice Communications Small businesses will find this booklet useful for learning how VoIP works and for clarifying
Document Scope This solutions document describes how to deploy and manage SonicWALL s integrated VoIP security features to enable the secure deployment of VoIP communications in a variety of network environments.
Voipswitch Manual for version 340 and higher by Gabriel Georgescu 1 OVERVIEW 3 SOFTSWITCH 4 REQUIREMENTS. 10 PROGRAM INSTALLATION. 10 LAUNCHING THE MAIN APPLICATION VOIPSWITCH 12 GATEWAYS 18 GK/REGISTRAR
To help manage risk and comply with regulations, many businesses in the financial and other sectors are recording telephone conversations, including those on mobile devices. To help them achieve compliance,
1. What is VoIP/ IPT?...1 2. Should I use a Hosted or DIY IP Telephony service??...2 3. Why should you now seriously consider using VoIP?...2 4. Why should I use BT?...3 5. Why should I use BT for Hosted
Small Logo Estimating Trunk Channel Requirements for VoIP Gateways in Unified Communications Executive Summary Unified Communications (UC) solutions typically use VoIP to deliver phone calls and are connected
Call Routing Management in Enterprise VoIP Networks Kunwadee Sripanidkulchai, Zon-Yin Shae, and Debanjan Saha NECTEC, Thailand IBM T.J. Watson Research Center ABSTRACT Voice over IP (VoIP) usage is growing
Connecting Remote Offices by Setting Up VPN Tunnels Cisco RV0xx Series Routers Overview As your business expands to additional sites, you need to ensure that all employees have access to the network resources
The owner friendly phone system for small business VoIP Network Configuration Guide Release 7.10 Copyright 2011 Fortinet, Inc. All rights reserved. Fortinet, FortiGate, FortiGuard, FortiCare, FortiManager,
Special Publication 800-58 Security Considerations for Voice Over IP Systems Recommendations of the National Institute of Standards and Technology D. Richard Kuhn, Thomas J. Walsh, Steffen Fries II NIST
WHITE PAPER Mobility Services Platform (MSP) Using MSP in Wide Area Networks (Carriers) Table of Contents About This Document... 1 Chapter 1 Wireless Data Technologies... 2 Wireless Data Technology Overview...
Grandstream Networks, Inc. Analog IP Gateway GXW42XX series 16, 24, 32 or 48 FXS Ports GXW42XX User Manual Firmware Version 220.127.116.11 www.grandstream.com email@example.com This page is intentionally
TeamViewer 7 Manual Remote Control TeamViewer GmbH Kuhnbergstraße 16 D-73037 Göppingen www.teamviewer.com Table of Contents 1 About TeamViewer... 5 1.1 About the software... 5 1.2 About the manual... 5
Using Avaya one-x Agent Release 2.0 November 2009 2009 Avaya Inc. All Rights Reserved. Notice While reasonable efforts were made to ensure that the information in this document was complete and accurate
10 Things Your Next Firewall Must Do Introduction Without question, your network is more complex than ever before. Your employees are accessing any application they want, using work or personal devices.
Configuration Example Use NAT for Public Access to Servers with Private IP Addresses on the Private Network Example configuration files created with WSM v11.7.2 Revised 5/10/2013 Use Case In this use case,
The Business Case for Videoconferencing Achieving a Competitive Edge Achieving a Competitive Edge Andrew W. Davis Ira M. Weinstein Wainhouse Research March 2005 Table of Contents The Business Challenge...
User Guide for the Polycom SoundPoint IP 450 Phone SIP 3.2 July 2009 1725-12495-001 Rev. B Trademark Information POLYCOM, the Polycom Triangles logo and the names and marks associated with Polycom s products
Grandstream Networks, Inc. HT502 Dual FXS Port Analog Telephone Adaptor HT502 User Manual Firmware Version 18.104.22.168 www.grandstream.com firstname.lastname@example.org TABLE OF CONTENTS HT502 User Manual WELCOME...
Unified Communications Using Cisco BE 6000 TECHNOLOGY DESIGN GUIDE February 2014 Table of Contents Preface...4 CVD Navigator...5 Use Cases... 5 Scope... 5 Proficiency... 5 Introduction...1 Technology Use
2010 White Paper Series Top Ten Security Issues Voice over IP (VoIP) Top Ten Security Issues with Voice over IP (VoIP) Voice over IP (VoIP), the use of the packet switched internet for telephony, has grown
TeamViewer 7 Manual Meeting TeamViewer GmbH Kuhnbergstraße 16 D-73037 Göppingen www.teamviewer.com Table of contents 1 About TeamViewer... 5 1.1 About the software... 5 1.2 About the manual... 5 2 Basics...
VoIP Phone DPH-150S User Manual Safety Notices Please read the following safety notices before installing or using this phone. They are crucial for the safe and reliable operation of the device. Please