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PTP characterizations
(0 – 127) A domain is one or more PTP devices communicating with each other. A domain
PTP domain number:
association is used to define communication messages. A value of 0 is standard.
PTP delay mechanism:
tween devices. All devices within the network should use the same mechanism. The recommended setting is to use
End-to-End (E2E) since more networked devices prefer to support this option.
PTP clock priority1/priority2:
determine a Grandmaster. Lower numbers have higher priority.
PTP clock sync interval:
second. A setting of 1 is 1 message in 2 seconds. The default setting is 0, 1 message per second.
Used to select the desired input to be utilized as an external clock source. This typically would
AES Sync Source:
be used to sync the output ports to a rate different than 48kHz. (Only available on AES/EBU node.)
Defines the clock for the AES/EBU digital audio output ports (AES/EBU xNode and mixed
AES Output Sync:
xNode). The default is to follow the internal 48kHz clock. If an alternate rate is needed, select the other option.
Master Node Clock Timebase:
synchronization. If there is good reason to use an external source, you would select the other option. It is suggested
to maintain the default (AES/EBU xNode and mixed xNode).
An option for turning off the digital AES/EBU stream if no network stream is received.
Mute AES Output:
Livewire Advertisement Slot:
information to the network. The default is 0, random. In extremely large facilities, it is possible for several nodes to
randomly become synced in this function. This condition can create jitter issues leading to audio clicks. To resolve
this, each device would need a unique slot value. For most facilities, the 0 value will be suitable.
Live Audio / Clock Streams:
modify these settings unless instructed to do so by Telos Alliance Support.
AES67 / Standard Audio Streams:
Live Audio streams. These should only be adjusted by personnel that understand the options, or by instruction
from Telos Alliance support.
(E2E or P2P) PTP supports two methods of time correction which alter messaging be-
Priority setting from 0-255 is used in the best master clock algorithm (BMC) to
Is the time for sending synchronization messages. A setting of -4 is 16 messages in 1
The default is to use the internal 48kHz clock present in the xNode for network
An option to define a specific time slot in which the node will send advertisement
These options define the tagging of the packet for Live Audio and clock. Don't
These options define the tagging of the packet for streams that are not the
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