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8 Web Page Reference
Master Slave Mode: At this point it is necessary to decide which end will designate a Master.
The Master unit is the controlling unit with respect to the point-to-point link and its
maintenance. The master transmits until the link is made, while the Slave listens for its peer
and only transmits when the peer has been identified.
Link Mode Optimization: Optimizes the link behavior according to the type of traffic that will
be bridged. There are two modes to choose from: IP and TDM. For both modes, the TDD
structure is fixed symmetrically 16:16 (16 OFDM bursts alternately in each direction).
However, the point at which a modulation mode changes for given RF conditions is more
conservative in TDM Mode. In practice, this means that the link will typically stay in a lower
modulation mode, but with increased tolerance to RF variability.
Depending upon the link characteristic that the customer requires, this may very well be the
best choice. It increases consistency of link performance and equality in each direction as a
trade-off against maximum throughput.
Tx Max Power: This attribute controls the maximum transmit power the unit is permitted to
use when installing and executing the wireless link. The maximum setting for a particular
region or country is controlled by the License Key.
Platform Variant: Chooses between an integrated unit or a connectorized unit that requires
an external antenna.
Channel Bandwidth: Users can choose a variable channel bandwidth for the available
spectrum. Values of 5 MHz, 10 MHz and 15 MHz can be selected.
Link Symmetry: In fixed symmetric mode, the master spends an equal amount of time
transmitting and receiving whereas in fixed asymmetric mode, the master transmit and
receive times have a fixed ratio. Finally, in adaptive mode the transmit and receive periods
adjust with applied load.
Spectrum Management Control: Is used to configure the PTP 500 Series Bridge's
Spectrum Management features, see Section 8.3.7 "Spectrum Management" for more details.
i-DFS is the abbreviation for intelligent Dynamic Frequency Selection. This feature continually
monitors the spectrum looking for the channel with the lowest level of on channel and co-
channel interference. Fixed frequency mode allows the installer to fix transmit and receive
frequencies on the units. The frequencies may be configured symmetrically or
asymmetrically.
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