Digital Audio Networking - Shure Digital IntelliMix SCM820 Manual

Digital Audio Networking

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Dante digital audio is carried over standard Ethernet and operates using standard Internet Protocols. Dante provides low la-
tency, tight clock synchronization, and high Quality-of-Service (QoS) to provide reliable audio transport to a variety of Dante de-
vices. Dante audio can coexist safely on the same network as IT and control data, or can be configured to use a dedicated net-
work.
Data Types on the Network
The SCM820 transports two types of data over the network: Shure Control and Dante Audio and Controller. They are transport-
ed to/from the two network ports depending on the mixer's network settings.
Shure Control
The Shure Control carries data for the SCM820 application, firmware updates and 3rd party control systems (AMX, Cre-
stron). This network is supported by all SCM820 models.
Dante Audio and Controller
The Dante network carries both the digital audio and the control data for Dante Controller. This network is supported by
Dante-enabled SCM820s.
Switch Recommendations for Dante Networking
In addition to the basic networking requirements, Dante audio networks should use a Gigabit network switch or router with the
following features:
• Gigabit ports
• Quality of Service (QoS) with 4 queues
• Diffserv (DSCP) QoS, with strict priority
• Recommended: A managed switch to provide detailed information about the operation of each network link (port speed,
error counters, bandwidth used)
Dante Network Interface
The Dante network card is a two-port interface that can be configured to enable the following applications:
• Link mixers to expand the audio mix, enabling the addition of up to 12 mixers (96 channels).
• Protect the audio signal with a redundant audio network.
• Isolate Dante audio from the Shure Control network.
• Record audio to a computer without additional hardware.
• Maintain digital audio path to other Dante devices.
• Route an 8-channel automixing insert to another Dante device using a single shielded Cat5e cable.
• Daisy-chain up to four SCM820 mixers.
Network Modes
The Dante network interface can be configured to operate in one of three modes: Switched, Redundant Audio, or Split. This
setting determines the types of data that are transported from the Primary and Secondary ports.
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