AT-OMNI-121 / AT-OMNI-122
120
The AMS Interface
PTP page
The
PTP
tab provides options for adjust Precision Time Protocol (PTP) for AES67 audio streams. PTP is used by
AES67 to keep all audio streams synchronized.
For a system utilizing PTP, all devices undergo an automatic self-election process to choose the interface to be used
as the PTP grandmaster (GM) clock, based on the accuracy of the device’s clock and the device’s configured priority.
A lower priority number means the unit is more likely to get selected as GM.
Interface
The name used by AMS to identify the interface.
Domain Number
Enter the domain number in this field. Valid entries are 0 through 127.
Priority 1
Enter the priority number in this field.
Priority 2
Enter the priority number in this field.
Is GM Present
This indicator displays the existence of a grandmaster clock for the specified PTP domain number. If the indicator is
green, then the grandmaster clock exists on this interface.
GM Identity
The grandmaster clock identity. If this field is blank, then it means that this interface is the grandmaster clock.
Master Offset
Displays the grandmaster clock offset.
NOTE:
If a new device is added to the network and the GM changes, a brief outage will be
experienced while all connected devices synchronize with the new clock. Because of this, Atlona
recommends that one unit gets manually defined as the GM and have both
Priority 1
and
Priority 2
fields be set to 1.
