Cambium Networks PTP 820 Series, Руководство пользователя

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Chapter 10: Synchronization Configuring the Sync Source
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Figure 345 Sync Source – Add Page
2 In the Sync Interface field, select the interface you want to define as a synchronization source. You can
select from the following interface types:
o
Ethernet interfaces – You can use Ethernet interfaces, including Cascading interfaces.
o
Radio interfaces – You can use any radio interface.
Note
In order to select an Ethernet interface, you must first specify the media type for this interface. See
Configuring Ethernet Interfaces .
3 In the Sync Interface Quality field, select the quality level applied to the selected synchronization source.
This enables the system to select the source with the highest quality as the current synchronization source.
o
If the Sync Interface Quality is set to Automatic , the quality is determined by the received SSMs. If no
valid SSM messages are received or in case of interface failure (such as LOS, LOC, LOF), the quality
becomes
Failure . SSM must be enabled on the remote interface in order for the interface to receive SSM
messages. For instructions how to enable SSM, see Configuring the Outgoing Clock and SSM Messages .
o
If the Sync Interface Quality is set to a fixed value, then the quality status becomes Failure upon interface
failure (such as LOS, LOC, LOF).
4 In the Sync Interface Priority field, select the priority of this synchronization source relative to other
synchronization sources configured in the unit (1-16). You cannot assign the same priority to more than one
synchronization source. Once a priority value has been assigned, it no longer appears in the
Sync Interface
Priority dropdown list.
5 Click Apply , then Close .
Editing a Sync Source
To edit a synchronization source:
1 In the Sync Source page ( Figure 344 ), click Edit . The Sync Source – Edit page opens.
2 Edit the parameters, as defined above. You can edit all the parameters except Sync Interface , which is read-
only.
3 Click Apply , then Close .