Motama GmbH


Application areas
  • Optimized distribution and contribution of live content
  • Improved reliability and higher bandwidths on long distance Internet links
  • Fixes packet loss issues within network
  • Replacement for expensive satellite links and CDN contracts

RelayCaster™ server appliances offer a turnkey solution that enables optimized transmission of IPTV streams.

With RelayCaster™, reliability and data rates of contributing and distributing live content can be greatly improved, and packet loss issues can be solved efficiently.

RelayCaster™ allows for replacing expensive satellite links or expensive contracts with CDN service providers. In contrast to these services, RelayCaster™ is not limited to certain regions or data centers. RelayCaster™ enables distribution of your content across any distance, to any place that is reachable by Internet infrastructure. With optional encryption, your streams will be protected between all senders and receivers (AES).

Being compatible with existing gateways, transcoder s, conditional access systems, streaming servers, and set-top boxes, RelayCaster™ a ppliances can be seamlessly integrated into your existing infrastructure: Input and output streams of RelayCaster™ support standard compliant protocols.

RelayCaster™ is available as a 19-inch rack-mountable server appliance, or as a software-only version for easy installation on existing servers hosted in data centers.

RelayCaster 200 Up to 230 Mbps Up to 100 Mbps Up to 100 Mbps
RelayCaster 1000 Up to 600 Mbps Up to 400 Mbps Up to 400 Mbps
RelayCaster One One stream, up to 25 Mbps One stream, up to 25 Mbps One stream, up to 25 Mbps
RelayCaster Lite Software One stream, up to 25 Mbps One stream, up to 25 Mbps One stream, up to 25 Mbps
RelayCaster Software Unlimited bandwidth. Performance depends on customer’s hardware platform
RelayCaster Lite Software for Amazon AWS One stream, up to 25 Mbps One stream, up to 25 Mbps One stream, up to 25 Mbps
RelayCaster Software for Amazon AWS Unlimited bandwidth. Performance depends on Amazon instance
General Arbitrary combination of sending / receiving protocols are possible. Please refer to data sheets for precise specifications.

How does it work?

The Internet is an unmanaged network and suffers from packet loss. But packet loss is a problem when streaming live content. This is particularly a problem, when distributing live streams across long distances - from one country to another country, or continent.

When using UDP for content distribution, packet loss immediately results in visual artefacts, drop outs or even interruptions of several seconds - simply because UDP is unreliable.

In contrast, TCP is a reliable protocol. It is therefore used as basis for HTTP and all protocols for Over-The-Top (OTT) streaming. But when using TCP, packet loss immediately results reduced bandwidths and thereby reduced saturation of your link - simply due to the inherent design of TCP. And this becomes worse when using TCP on long-distance links.

When streaming to end users' client devices, adaptive bitrate streaming (ABR) helps to overcome this problem by switching to a stream with lower bitrate. But this does not help, if you want to originally distribute or contribute your content using the original bitrate providing the highest quality.

RelayCaster™ servers employ a proprietary protocol - called RelayCaster Streaming Protocol (RCSP™) - to overcome these problems. This protocol is fully Internet compliant and works with all existing IP network infrastructure. Using RCSP™ as streaming protocol between two RelayCaster™ servers allows for the optimized transmission of IPTV streams to remote company sites, data centers, or networks. Streams received on one side are transparently provided again on the other side. In between an arbitrary Internet link is used.

Over-The-Top (OTT) streaming, adaptive bitrate streaming (ABR), and RelayCaster™ work together nicely: In each data center, streams received by RelayCaster™ are forwarded to OTT streaming servers providing streams to end users' devices that are 'nearby' (in terms of Internet distance). To this end, RelayCaster™ helps 'pushing' streams close to end users.

This approach can be scaled. You can create your own Content Delivery Network (CDN) of RelayCaster™ servers: IPTV streams from a central data center are re-distributed to various intermediate and terminating data centers that are spread around the world.

This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit. ( This product includes cryptographic software written by Eric Young (
RelayCaster 200
RelayCaster 1000
RelayCaster One
RelayCaster Lite Software
RelayCaster Software
Amazon AWS
RelayCaster Lite for Amazon AWS
RelayCaster Software for Amazon AWS
White Papers
Scalable Infrastructures supporting IPTV in Hospitality, Health Care, and Corporate Networks
Content Delivery Networks (CDN) for Live TV Streaming
Customized IPTV setups with TVCaster server appliances
Server SDK