Is SMPTE ST 2110 suitable for inter-site connectivity over the WAN? As ST 2110 continues to mature and the first facilities are going live bringing 2110 into daily use, there are a number of challenges still to be overcome and moving a large number of essence flows long distances and between PTP time domains is one of them.
Nevion’s Andy Rayner presents the work the VSF is doing to recommend transport of ST 2110 over WAN outlining where they have got to and what has been recommended to date.
The talk starts with SMPTE 2022-7 seamless protection which is recommended for dealing with path breaks. For compensating for transmission errors, FEC is recommended and Andy explains the parameters needed.
Key to the inter-site transport is trunking whereby the individual essences are mixed down to one flow. This has a number of advantages: Reducing the number of flows makes life simpler for service providers, all essences will now share the same signal path from site to site and it FEC protection can be more efficiently applied.
The trunks are made using GRE – Generic Routing Encapsulation – which is a pre-existing IT standard for grouping lots of traffic into a single tunnel whilst preserving the data inside. This then appears at the other end of the trunk with the same IP information as if nothing had happened. Andy looks at the extra encapsulation headers needed to make this work and goes on to discuss payload lengths as we need to keep them short so as not to result in fragmented packets.
Timing, as ever, is important meaning that the recommendation is to align all essences before sending them in to the trunk, though Andy looks at alternatives. Also of key concern is compression as there will be times when uncompressed video is simply too high a bandwidth to be carried on the WAN. JPEG 2000 and, now, JPEG XS are available for this task.
Andy covers timing, discovery, control, security and conversion to and from 2022-6 before finishing the talk by taking questions.
Andy Rayner from Nevion looks at using SMPTE ST 2110 on a Wide Area Network (WAN).
While using ST 2110 is a much discussed topic in the studio or within a building, there are extra difficulties in putting it between buildings, cities and countries with some saying it shouldn’t even be done. Here, Andy examines how you can do it whilst acknowledging the industry still has some decisions to make.
Andy Rayner from Nevion takes us through the principles for creating complete SMPTE ST 2110 systems based on Nevion’s real-world deployments.
With the basics for SMPTE ST 2110 in place, developments and deployments are focusing on achieving the ‘whole solution’. An all-IP environment offers immense flexibility which is yet to be fully realized but is coming to fruition as vendors mature their capabilities. As well as basic architectures, some of the areas explored including optimising buffering, audio manipulation, conversion between ST 2110 and SMPTE ST 2022 & going on/off campus in IP.
Looking at Audio, Scaling of media flows and the key question of orchestration, this is a great real-world look at ST 2110.
Date: 19th October 2017
Time: 1800 ample refreshments for 1900 lecture
Location: East London, Ravensbourne, 6 Penrose Way, London, SE10 0EW
Following the announcement at IBC 2017 that ST 2110 Standards have been approved SMPTE UK is providing members with the first informative evening looking at and discussing the standards
and their parts and surrounding Standards and specifications.
Andy Rayner Chief Technologist at Nevion will guide us through the multipart standards suite. ST 2110 “Professional Media over Managed IP Networks”
This Standard and the supporting Standards and specifications are a major contributing factor in the movement towards one common Internet Protocol (IP) based mechanism for professional media industries.