AoIP Setup
AoIP Setup
Begin by clicking on the Settings icon (C), then selecting the AoIP tab (A).
In the Basic AoIP section (B):
Enter the Livewire channel of the audio source to be processed in the "Receiver" field.
Enter the Livewire channel carrying the processed audio output in the "Sender" field.
Choose the packet time in the "P-Time" dropdown menu (5ms or 1ms).
Information in the Advanced section (D) will automatically populate to match the settings of the AoIP network to which the host computer is connected and/or to the standard default Livewire values when used on a Livewire network. Unless you are using a non-Livewire compatible AES67 stream or are instructed to change these settings by Telos support, we recommend leaving them as-is, with two exceptions as outlined below.
Link Offsets
It may be necessary to adjust the Standard Link Offset (for Livewire standard streams) and AES Link Offset (for AES67 streams) settings, which specify the amount of available jitter buffering (in samples) available to absorb the sum of:
Packet jitter caused by the network.
Transmission jitter from the upstream source machine.
Clock/execution jitter on the local machine running Forza.
On a robust network, packet jitter may be less than 0.5ms. Transmission jitter can range from less than 0.5ms (for a hardware node) up to 20-30ms (for a Windows machine with a sub-optimal configuration). Clock jitter on the local machine should be less than a few ms on a machine configured with a low-latency kernel and the Forza container operating properly with real-time privileges. Accordingly, 10-20ms is a safe starting point, which translates to 480-960 samples.
Our recommendation is to set both link offsets for 960 samples and use the override offset to increase the buffer size as needed.
Buffer Mode
The buffer mode setting needs to match the type of clock configured with the EX_AOIP_CLOCK environmental variable (0 for PTP clock, 1 for Livewire clock).
If the master clock is set to Livewire, the buffer mode must be set to Syntonus (Livewire).
If the master clock is set to PTP, either Syntonus (Livewire) or Synchronous (AES67) may be used.
If strict conformance to AES67 is required, Synchronous (AES67) should be used.
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