Library items tagged: Videoconference

Global Dialing Scheme explained

Iain Emsley
Monday, September 26, 2011 - 15:41
Videoconference
E.164
H.323
In order to ensure standardised H.323 videoconferences can take place both within the UK and world wide, an H.323 Global Dialing Scheme (GDS) has been developed. SURFnet in the Netherlands, HEAnet in Ireland and ViDeNet in the US have also implemented this scheme. The GDS has been developed because a standardised H.323 addressing scheme is yet to be created. The GDS uses standards based E.164 addressing.
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Datasharing on Janet VideoConferencing Service

Iain Emsley
Monday, September 26, 2011 - 15:40
Videoconference
datasharing
Data Sharing within Videoconferencing Author: Geoff Constable, University of Wales, Aberystwyth Version: 1 1. INTRODUCTION 2. DATA SHARING STANDARDS 3. INBAND DATA SHARING 3.1 Document Camera 3.2 Scan Conversion 3.3 Inband Data Sharing using T.120 4. OUTOFBAND DATA SHARING 5. MICROSOFT WINDOWS NETMEETING
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IP Videoconferencing

Iain Emsley
Monday, September 26, 2011 - 15:39
CODEC
H.323
IP
Videoconference
The JANET Videoconferencing Service (JVCS) provides videoconferencing services to the Janet community within the UK. It consists of centralised equipment, a Service Desk and Booking Service to facilitate videoconferences using both ISDN and IP technologies. The service supports point-to-point (one-to-one) and multipoint videoconferences and provides a bridges to allow conferencing between IP and ISDN systems.
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ISDN Dialup

Iain Emsley
Monday, September 26, 2011 - 15:38
ISDN
Videoconference
MCU
Multipoint
QA test
ISDN Videoconferencing ISDN is a service offered by telephone companies over the circuit switched network to support Voice, Telephone and Data Applications. This document will give an overview of H.320 protocols and outline the procedures for using JVCS-ISDN. Understanding ISDN There are two types of ISDN interface: Primary Rate ISDN (PRI) Interface and Basic Rate ISDN (BRI) interface. A BRI is an ISDN interface that provides two 64Kbps B-channels and one D-channel.
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Janet Videoconferencing Service check

Iain Emsley
Monday, September 26, 2011 - 15:37
Videoconference
Introduction JVCS-Check (the JANET Videoconferencing Service-Check) is an easy to use online tool which provides an instant audio and video assessment facility for IP-based (H.323) videoconferencing endpoints.A typical JVCS-Check assessment session takes just over ten minutes to complete and consists of ten sections, each introduced by a technical summary from a recorded presenter:
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Videoconferencing Quality

Iain Emsley
Monday, September 26, 2011 - 15:36
Quality
Videoconference
Videoconferencing Quality Issues Note: these comments refer to Standard Definition videoconferencing. It is useful to consider some very basic information on how standard definition VC systems operate which will help in understanding the limitations of video quality over a videoconference link. There are two measures of quality in an image:
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Video Displays, Signals and Formats

Iain Emsley
Monday, September 26, 2011 - 15:35
Videoconference
booking service
vtas
JVCS Check
Introduction JVCS-Check (the JANET Videoconferencing Service-Check) is an easy to use online tool which provides an instant audio and video assessment facility for IP-based (H.323) videoconferencing endpoints.A typical JVCS-Check assessment session takes just over ten minutes to complete and consists of ten sections, each introduced by a technical summary from a recorded presenter:
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Videoconferencing standards

Iain Emsley
Monday, September 26, 2011 - 15:34
Videoconference
standards
Videoconferencing, in common with most Information Technology (IT) related fields, has its own language, jargon and engineering standards. To the newcomer, the range and number of different standards can be bewildering. Unless the reader has a background in telecommunications most of these standards are unlikely to be familiar and even then only those directly involved with networking/videoconferencing are likely to be completely conversant with them. A basic understanding of the standards
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Configuring a Gatekeeper to use with Janet VideoConferencing

Iain Emsley
Monday, September 26, 2011 - 15:33
Videoconference
gatekeeper
This document is intended for use by those at Janet primary-connected organisations who have responsibility for deploying and/or configuring an organisational H.323 gatekeeper. It is intended to be a practical aid and does not consider the technical considerations underlying configuration commands unless these are necessary for the explanation of configuration options. The examples and discussion are confined to those commands necessary (both required and optional) for configuring the gatekeeper to work with the JVCS (Janet Videoconferencing Service).
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