© Microhard Systems Inc.
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5.0 Network Topologies
The Nano may be configured to operate in a number of different operating modes and partici-
pate in various network topologies.
Note: This section describes network topologies and also contains details regarding related
factory default settings to enable the reader to readily see the correlation between various
registers. Refer to section 6 for further detailed information regarding configuration options
and details.
For convenience, a number of factory default configurations related both to operating modes
and network topologies are available. Configuring modems using factory default settings has
the following benefits:
•
hastens the configuration process
l
oad default and, if necessary, apply only minor settings adjustments
•
aids in troubleshooting
if settings have been adjusted and basic communications cannot be established,
simply revert to the applicable factory default setting and any improper adjustments
will be overwritten and a ‘fresh start’ can be made with known-to-work settings
Settings (S) register S133 configures the modem for the ‘Network Type’ within which it will be
participating.
5.1 Point-to-Point (PTP)
In a point-to-point network, a path is created to transfer data between Point A and Point B,
where Point A may be considered the Master modem and Point B a Slave. Such a PTP net-
work may also involve one or more Repeaters (in a store-and-forward capacity) should the
radio signal path dictate such a requirement.
A PTP configuration may also be used in a more dynamic sense: there may be many Slaves
(and Repeaters) within such a network, however the Master may have its ‘Destination Ad-
dress’ (S140) changed as and when required to communicate with a specific Slave.
PTP factory default settings: Master &F6
Slave &F7
slow mode* :
Master &F8
Slave &F9
*Slow modes available in n920S, n920BD and n920X2
