In Broadcast June 2012 - 27
ISSUE 9 - JUNE 2012 | WWW.INBROADCAST.COM
InAUDIO
Developments In Comms Technology Systems Cont.
an installation there is no need to limit the audio quality. I feel confident that the current technology trend is AoIP as bandwidth is no longer an issue in networking.” Just as SIP and Tech 3347 are being established in intercom, manufacturers are already looking at other emerging technologies to expand the networking and integration capabilities of their communications products, notably AVB (audio/video bridging or bridge) and OCA (Open Control Architecture).
Open Standards
AVB is a non-manufacturer related open standard based on IEEE (Institute of Electrical and Electronics Engineers) 802.1 and is designed for interconnection, networking and data centre bridging, carrying, routing and switching of audio and video signals over standardised Ethernet connections. The OCA Alliance was formed in June 2011 by nine professional audio companies, including Bosch Communications Systems and Salzbrenner Stagetec Mediagroup, which includes Delec. OCA is described as a system control and monitoring architecture and, because it does not have its own signal transport, is intended to work with any existing or future carrier. This includes technologies that are part of AVB, such as the Audinate Dante IP over Ethernet networking
CONTINUED ON PAGE 28
Clear-Com Tempest 2400 Wireless System
and their customers greater confidence in IP, with all major companies now producing systems based on the format. Further validation came last year when the European Broadcasting Union published Tech 3347, laying down guidelines and specifications for the use of IP in intercom systems. The standard is based on the SIP (Session Initiation Protocol) format, developed by the IETF (Internet Engineering Task Force) as an internet protocol for live communications to start and end voice or video calls. The ultimate aim behind Tech 3347 is to allow IP-based intercoms of different brands to work together, creating extensive comms networks for big broadcast events. Tests were held recently in Munich to see how far manufacturers had got with this; Spencer reports that most companies managed to interface their respective products with those of others. “There is the opportunity to achieve more than just routing audio between disparate manufacturers’ systems,” he comments. “So much broadcast content is being carried over IP these days and the ability for different systems to talk to each other is seen as viable. The SIP interface is making this possible and if manufacturers don’t follow suit they will be left behind.” Clear-Com’s Simon Browne acknowledges that IT standards are now being used to “cross-platform communication in the digital domain” but says this does not necessarily mean IP is the answer. “Intercom systems have to connect users together over controlled WAN links at best and the internet at worst, while still providing a timely intelligible communication.” he
explains. “Some technologies don’t provide for this yet and so find solutions in LANs only. SIP certainly has its place in telephony and radio to intercom interfacing but its call set-up time precludes it from quick point to point intercom on demand. In cases where links are set and left it is an excellent solution.” Riedel was the first intercom manufacturer to produce Tech 3347 compliant equipment. “VoIP is definitively an important topic, since there are a number of very useful applications especially for wide area applications or connecting remote studios,” comments Nils Quak. Nico Lewis at RTS-Telex adds: “The trend is moving to
manageable networked systems. VoIP technology has been used by RTS for the last seven years and is seen as a very successful, solid way to connect intercom systems. It is essential that communications with your base can be established. It should be considered how you will make that connection; VoIP systems such as RVON provide reliable worldwide connectivity that simplifies communications over long distance.” Donald Dilocker differentiates between Voice over IP (VoIP), which is compressed and requires a codec, and Audio over IP (AoIP), which works with linear audio (uncompressed). “VoIP is important only for mobile or external communications,” he says. “Inside
27
RTS installation at GOL Mediapro Barcelona
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In Broadcast June 2012
Table of Contents for the Digital Edition of In Broadcast June 2012
In Broadcast 6/12
Contents
Innews
Inview: Workflows Alter Post
Inaudio: Communications & Talkback Systems
Insound Glensound Hd Voice
Insound-the Loudness Control Dilemma
Inmedia: Networking in the Cloud
Inmedia Programming Perfection – the Adderlink Infinity Dual
Inmedia Cloud Station?
Instudio: Dynamic Supports
Ingear: Protective Bags & Cases
Inmedia Hd/sd Media Newsroom Has Global Presence
Inreply Argosy Has the Answers
Inreview Koba Serves Up Latest Kit
Infocus Oxygen Upgrades Sports Production Galleries
Infocus Newtek Unveils Next Generation Tricaster Family
Inform Tvu Networks on Video Stability
Inform Higher Frame Rates the Latest Hot Tech Fad?
69 Intest Omnitek Enhances Otm/otr Software
In Broadcast June 2012 - In Broadcast 6/12
In Broadcast June 2012 - 2
In Broadcast June 2012 - Contents
In Broadcast June 2012 - Innews
In Broadcast June 2012 - 5
In Broadcast June 2012 - 6
In Broadcast June 2012 - 7
In Broadcast June 2012 - 8
In Broadcast June 2012 - 9
In Broadcast June 2012 - 10
In Broadcast June 2012 - 11
In Broadcast June 2012 - 12
In Broadcast June 2012 - 13
In Broadcast June 2012 - 14
In Broadcast June 2012 - 15
In Broadcast June 2012 - 16
In Broadcast June 2012 - 17
In Broadcast June 2012 - 18
In Broadcast June 2012 - 19
In Broadcast June 2012 - 20
In Broadcast June 2012 - 21
In Broadcast June 2012 - 22
In Broadcast June 2012 - 23
In Broadcast June 2012 - Inview: Workflows Alter Post
In Broadcast June 2012 - 25
In Broadcast June 2012 - Inaudio: Communications & Talkback Systems
In Broadcast June 2012 - 27
In Broadcast June 2012 - 28
In Broadcast June 2012 - 29
In Broadcast June 2012 - Insound Glensound Hd Voice
In Broadcast June 2012 - 31
In Broadcast June 2012 - Insound-the Loudness Control Dilemma
In Broadcast June 2012 - 33
In Broadcast June 2012 - Inmedia: Networking in the Cloud
In Broadcast June 2012 - 35
In Broadcast June 2012 - 36
In Broadcast June 2012 - 37
In Broadcast June 2012 - Inmedia Programming Perfection – the Adderlink Infinity Dual
In Broadcast June 2012 - 39
In Broadcast June 2012 - Inmedia Cloud Station?
In Broadcast June 2012 - 41
In Broadcast June 2012 - Instudio: Dynamic Supports
In Broadcast June 2012 - 43
In Broadcast June 2012 - 44
In Broadcast June 2012 - 45
In Broadcast June 2012 - 46
In Broadcast June 2012 - 47
In Broadcast June 2012 - Ingear: Protective Bags & Cases
In Broadcast June 2012 - 49
In Broadcast June 2012 - 50
In Broadcast June 2012 - 51
In Broadcast June 2012 - 52
In Broadcast June 2012 - 53
In Broadcast June 2012 - Inmedia Hd/sd Media Newsroom Has Global Presence
In Broadcast June 2012 - Inreply Argosy Has the Answers
In Broadcast June 2012 - Inreview Koba Serves Up Latest Kit
In Broadcast June 2012 - Infocus Oxygen Upgrades Sports Production Galleries
In Broadcast June 2012 - Infocus Newtek Unveils Next Generation Tricaster Family
In Broadcast June 2012 - 59
In Broadcast June 2012 - 60
In Broadcast June 2012 - 61
In Broadcast June 2012 - 62
In Broadcast June 2012 - 63
In Broadcast June 2012 - Inform Tvu Networks on Video Stability
In Broadcast June 2012 - 65
In Broadcast June 2012 - 69 Intest Omnitek Enhances Otm/otr Software
In Broadcast June 2012 - 67
In Broadcast June 2012 - 68
In Broadcast June 2012 - 69
In Broadcast June 2012 - 70
In Broadcast June 2012 - 71
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