Motorola PTP 500 User's Guide Page 79

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PTP 300 and PTP 500 Series User Guide Telecoms circuits
phn-1115_006v000
Sep 2010
1-39
Fixed frequency operation
In a PTP 300 or PTP 500 link, data errors may occur during channel changes on an
operational link. It may be appropriate to minimize channel-change-related errors in a
link carrying Telecoms traffic by preventing channel changes initiated by i-DFS. This
can be achieved by barring all channels except one in the Spectrum Management
page, or alternately by selecting Fixed Frequency mode. These steps unavoidably
disable interference avoidance mechanisms, and should not be taken if the risk of
errors due to interference is more severe than the risk due to channel changes.
Fixed frequency operation is not available when radar detection requirements exist in
the frequency band. Channel barring is allowed in radar regions, but it is unwise to
bar all channels except one, as any radar signals detected on that channel will drop
the link for up to 30 minutes.
Further reading
Installation is described in Installing an E1 or T1 interface on page 5-41.
Configuration is described in Task 8: Configuring wireless and telecoms interfaces on
page
6-26.
Testing is
described in Performing a telecoms loopback test on page 8-19.
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