M3SR Series 4100 Control and Monitoring of Radio and Control Unit
3.36 Operating Manual 6175.4760.02 – 01
To handle the available access rights, to each connection a session is assigned which occu-
pies access rights. Each session occupies one monitoring access right and dependent on
the type of the session also the operational access right. For details about the session types
see Table 3.14. If all monitoring access rights are occupied, no further session and no further
connection is available. The radio denies the access.
Figure 3.20 Example: Three Monitoring Sessions
1 Connection
2 Session Assigned to Connection
3 Occupied Access Right
To handle the limited number of access rights and to make it possible to pass the unique op-
erational access right to other control units on demand, different session types are available:
• Monitoring Session (MON)
• Advanced Session (ADV)
• Fixed Session (FIX)
• Local Session (LOC)
To ensure that only one control unit has operational access at a time, the following procedure
is necessary:
1. The control unit requests a session with operational access rights.
2. The radio grants or denies the requested session.
Operational
Access Right
Monitoring Access
Right (1)
Monitoring Access
Right (2)
Monitoring Access
Right (3)
Control Unit
CU3
Radio
Control Unit
CU2
Control Unit
CU1
Monitoring Session
Monitoring Session
Monitoring Session
1
1
2
3
1
ICN-4D-C-231000-R-D0894-00036-A-01-1
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