© Microhard Systems Inc.
42
5.0 Network Topologies
5.2 Point-to-Multipoint (PMP)
In a point-to-multipoint network, a path is created to transfer data between the Master
modem and numerous remote modems. The remote modems may simply be Slaves with
which the Master communicates directly, and/or Slaves which communicate via Repeat-
ers. Some or all of the Repeaters may also act as Slaves in this type of Network, i.e. the
Repeaters are not only storing and forwarding data, but are also acting as Slaves. Such
Repeaters may be referred to as ‘Repeater/Slaves’.
PMP factory default settings:
Master
&F1
Slave
&F2
Repeater
&F3
slow mode* :
Master
&F4
Slave
&F5
*Slow Mode (19.2kbps) available on n920S, n920BD, n920X2
The factory default PMP Master configuration reveals the following differences with re-
spect to the PTP factory default Master: S133=0 (PMP network) and S140=65535 (the
broadcast address, indicating that this Master (
point
) will send its data to all modems -
multipoint
). On a
PMP
Master
,
set S113=0
and increase only if required.
Image 5-3: &F1 PMP Master Configuration View
