Audio over IP training course description

Explore the world of Audio over IP with this hands-on, comprehensive course designed for engineers with a solid knowledge of TCP/IP. Explore a wide range of architectures, standards, and delivery methods rather than focusing on one standard. The course covers all critical areas of AoIP, including RTP, multicasting, Dante, AES67, and low-latency streaming. Hands-on sessions provide practical experience with these technologies, allowing delegates to apply their knowledge directly. Through interactive activities and in-depth analysis, you will gain the expertise needed to navigate and implement AoIP systems effectively.

What will you learn

• Recognise the use of various protocols and techniques used in AoIP.
• Use Wireshark to analyse and troubleshoot audio streams.
• Troubleshoot and test multicast networks.
• Evaluate AoIP technologies.
• Compare and contrast Dante, AES67, Ravenna and other AoIP protocols.

Audio over IP training course details

Audio over IP training course contents

• What is AoIP?

What is IP? What is Audio? AoIP use cases. Codecs: PCM, compression, MP3, AAC, uncompressed PCM, sample rates, bit depth. The major AoIP protocols: Dante, AES67, Ravenna, Livewire+, Wheatnet.
Hands on Base IP connectivity, VLC.What is IP? What is Audio? AoIP use cases. Codecs: PCM, compression, MP3, AAC, uncompressed PCM, sample rates, bit depth. The major AoIP protocols: Dante, AES67, Ravenna, Livewire+, Wheatnet.

• AoIP protocol stacks

Ethernet, Layer 2 audio protocols: Livewire, Wheatnet. IP, TCP, UDP, RTP. IPv6. Why UDP is used. Dante, AES67 and Ravenna. Using SMPTE 2110 for audio.
Hands on AoIP packet analysis with Wireshark.

• IP issues

Is bandwidth an issue with Audio? Factors affecting bandwidth: Quality and sample rate, number of channels. Delay, latency, jitter, signalling. Routers. QoS, IP DSCP field, 802.1Q.
Hands on Analysing jitter, packet loss and other performance issues. Iperf3.

• RTP

RTP, ports, payload types, dynamic payloads, RTCP.
Hands on RTP analysis with Wireshark.

• Security

VLANs, Firewalls, VPNs. SRTP. Dante and AES encryption.
Hands on Securing an AoIP channel.

• Timing

Synchronisation in one stream versus many streams. What is time? Computers and time. NTP, PTP, how PTP works, transparent and boundary clocks. PTP timestamps. Synchronising RTP timestamps.
Hands on Analysing PTP with Wireshark.

• Multicasting

Multicasting compared to unicasting and broadcasting, when to use and when not to use multicasting. Multicast addressing.
Hands on Multicast troubleshooting tools.

• Multicast architecture

The big picture, IGMPv1/v2/v3, PIM-SM, SSM. MLD. SAP/SDP.
Hands on IGMP snooping, Building and analysing a routed multicast network.

• Multi zone audio distribution

Multiple zones with different audio streams. Failover and redundancy. STP, RSTP.
Hands on Audio routing and automatic failover.

• AoIP protocols and architectures

Comparison of Dante, AES67, SMPTE 2110 30 and 31, Ravenna, Livewire+ and Wheatstone. Interoperability. When and where each is used. AoIP hardware and software overview. IP audio edge, Interfaces, consoles, DSPs. Virtual soundcards and software mixers.
Hands on Dante controller flow monitoring of AES67 streams.

Learning path

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