6 about – Alyseum MS-4 User Manual
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MS-4 – User’s manual © - Revision 1.4
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6 About
6.1 Ethernet
Alyseum
products rely on Ethernet to transport data; compared to other solutions (USB,
IEEE1394, ...) Ethernet offers many advantages:
● Available on all computer platforms 
● No real limit in cable length and node connections. 
● Full 
Duplex.
● Very high bandwidth. 
● Very low Latency. 
● Frees the computer of the MIDI flow handling of USB/Firewire interfaces 
● Embedded devices can work without any computer in the network 
● Peer to peer capability. 
● Full galvanic isolation between machines, preventing audio hum due to ground loops. 
● Low-cost, ubiquitous and reliable infrastructure. 
6.1.1 Note about Wi-Fi use
Using these products via Wi-Fi is possible but not guaranteed. Wireless transmissions are subject 
to perturbations that require data resending which implies unavoidable delays which are 
inconvenient for real-time musical purposes. 
This is why Alyseum only guarantees good performance when using wired network. 
6.1.2 Tips for a efficient Ethernet Network
The performance of an Ethernet network is always related to the weakest link.
● Use the WI-FI only for the web, Email, ... and the wired network of your computer for the
CopperLan and audio streaming
● For large installations, use an additional network card in your computer to create a network
dedicated only for CopperLan and audio streaming
● For large installations, preferably use Gigabit Ethernet switches to guarantee a better data
exchange
● Avoid Ethernet HUB as these create collisions in messages that could hamper the overall
network performance
6.2 CopperLan
CopperLan offers many advantages:
● Connectivity guaranteed with any hardware/software supporting CopperLan. 
● No IP and DHCP configuration, thanks to an address abstraction layer. 
● Protocol and networking system for command & control + streaming management. 
● Self-configuring and Plug & Play. 
● Universal remote editing with labels, dedicated data types and high resolution. 
● Decentralized work distribution and storage – every CopperLan equipment incorporates its 
own server.
CopperLan manages MIDI in a more powerful and flexible than any other technology available. 
The benefit of having its own dedicated protocol surpasses the afterthought solutions relying on 
TCP/UDP-IP in terms user-friendliness. 
