Operating Manual 6175.4760.02 – 01 5.45
M3SR Series 4100 FastLink Mode (FLM)
5.3.2.1 FLM Control
An application can access the FLM functionality by means of remote commands. These
commands allow the application to obtain the current state of FLM, initiate and terminate an
FLM connection and get additional information about configuration and for efficient FLM use.
The offered commands are as follows:
FLM Connect Request <destination IP>
Tries to establish an FLM connection to the provided destination. The current FLM state must
be IDLE, otherwise the request is not accepted. The connect request may fail for several rea-
sons:
• Destination is not reachable (no route, out of range).
• Another radio issued a connect request and won the competition for the unique FLM con-
nection.
FLM Disconnect Request
Causes an established FLM connection to be terminated. Only the radio that established the
FLM connection is allowed to issue a disconnect request.
FLM State
Returns the current state of the FLM module in the radio. The possible states are shown in
Table 5.6:
Table 5.6 FLM States
It is strongly recommended to use the trap feature for this command since some state tran-
sitions may occur in a very quick sequence. A polling mechanism might miss some state
transitions, especially care should be taken for the immediate state transition from 'Rebro-
Busy' to 'Idle'.
Figure 5.9 shows the state transitions in a graphic representation.
Idle No FLM connection active in the radio network.
Connecting The radio tries to establish an FLM connection.
ConnectedTx The radio that issued the connect request established an FLM connection suc-
cessfully.
ConnectedRx The radio that received a connect request established an FLM connection suc-
cessfully.
Busy An FLM connection is established, but the radio is not involved (neither the
source nor the destination of the FLM connection).
Disconnecting An application issued a disconnect request and the radio initiated termination
of an active FLM connection.
Rebro-Connecting Equal to connecting, but indicates that the connect request was forwarded to
another radio network (rebroadcast). The application must expect a longer
connection setup.
Rebro-Busy Indicates that a remote network has already an active FLM connection.
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