Release Notes
System Release 13.4
pmp-0979 - July 2015 Page 7 of 50
3.1 Listen-Before-Talk (LBT) 5.4 GHz for PTP 450
In System release 13.4, the LBT 5.4 GHz is implemented for PTP series. This feature was
previously implemented on PMP in release 13.3 and is now implemented on PTP. BHM
listens during the RTG (Receive/Transmit Transition Gap). If the interference is detected,
the following frame is left empty, no symbol is used (not even the overhead symbols).
The BHS listens during the TTG (Transmit/receive Transition Gap) time. If interference is
detected, the BHS skips the whole Uplink frame, nothing is sent.
Web Management Interface
The alternate channels can be configured on the BHM (under the tab Configuration >
Radio). Same channel cannot be configured twice for Frequency Carrier, Alternate Channel
1 or 2.
Figure 1 LBT BHM configuration for 5.4 GHz
In order to enable LBT, the Regional and Country will have to be configured for an “Other
Regulatory/Other ETSI” or “Europe” followed by County that supports the ETSI standard.
This setting is available under Regional Settings tab of Configuration > General page.
Figure 2 LBT ETSI 5.4 GHz BHM Region and Country code
3.2 Security Banner
In system release 13.4, the security banner has been introduced. If enabled, the user has to
accept and acknowledge the security requirement before login into web management
interface.
This feature is supported for all PMP / PTP product series.
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