Audio over IP - Setup

The AoIP section under Interfaces provides the configuration and status information for Audio over IP operation.

Expand AoIP in the Interfaces menu and select Setup.

Note - Some AoIP parameters are only visible when Show Expert Settings is enabled. Enable this option to display all parameters described in this section.

The page is divided into several sections for general AoIP configuration, network interfaces, synchronization, Livewire, NMOS, receiver settings, and sender settings.

Changes to some low-level AoIP settings may temporarily interrupt active AoIP streams. Where this applies, a corresponding message is shown on the page.

AoIP

This section controls the general AoIP operation and shows the current synchronization status.

Channel Extension License

Additional licensed AoIP channel capacity can be made available locally or through network licensing.

Packet Processing

These parameters control low-level packet processing for AoIP.

XDP provides highly efficient packet processing close to the network interface, reducing the CPU overhead associated with AoIP traffic. This makes it possible to handle higher packet rates and very small packet times more efficiently.

Changing packet-processing settings may interrupt active AoIP streams.

Management Interface

The Management Interface is used for AoIP control and management communication.

The Management Interface is used for AoIP control and management traffic, including protocols such as NMOS. Selecting the correct Management Interface is therefore important, as these services may be restricted to this interface.

Changing the Management Interface may interrupt active AoIP streams.

Media Interfaces

Media Interfaces carry the AoIP media traffic. Up to four Media Interfaces can be configured, depending on the system and its available network interfaces.

All Media Interface sections use the same parameters.

Livewire

The Livewire section provides the password used for Livewire Routing Protocol (LWRP) access.

NMOS Registry

The NMOS Registry section shows the current NMOS registry connection and provides the corresponding discovery settings.

Status

Settings

Changing the NMOS Registry configuration may interrupt active AoIP streams.

Receiver

The Receiver section shows the remaining receiver capacity and defines default behavior for automatically connected streams and stream discovery.

Capacity

Auto Link Offset / Delay

The Auto Link settings define the receiver delay used when streams are connected automatically. Separate values are provided for the supported stream and packet-time classes.

Auto Link Offset defines the fixed receive/playout delay that is automatically applied when a stream is linked. It provides additional time for network packets to arrive before they are presented to the audio engine, improving tolerance to network jitter and late packets.

A separate offset can be configured for each packet-time class. Once applied, the delay remains constant for streams of that type, so the additional latency is deterministic rather than varying with network conditions.

Higher delay values provide additional buffering at the receiver but also increase the end-to-end audio latency.

Stream Naming

Discovery

Sender

The Sender section shows the remaining sender capacity and defines default network parameters for transmitted streams.

Capacity

Auto DSCP

Auto DSCP defines the Differentiated Services Code Point (DSCP) automatically assigned to transmitted AoIP packets for each supported stream type.

DSCP (Differentiated Services Code Point) is a field in the IP header used to classify network traffic for Quality of Service (QoS). Network switches and routers can use this value to prioritize time-critical AoIP packets over less critical traffic.

Auto DSCP automatically assigns the appropriate DSCP value according to the selected stream type and packet time. This helps ensure that streams with higher timing requirements receive the intended network priority without having to configure the DSCP value manually.

SDP