25.1 Connected sources, sensors and systems
taking part in the alert related communication should follow
a standardized communication concept. Internal alert related
communication within an individual source, sensor and equipment
may use an alternative communication concept.
25.2 The communication protocol should allow the
implementation of the functions described in these standards. In
particular, this includes:
25.2.1 Transmission of all relevant alert
priorities, states, associated quality information, additional
alert message information for, e.g., explanation of alert, decision
support.
25.2.2 Transmission of alert source identity
so that originator component and/or function can be determined, as
well as it being possible to differentiate between alerts originating
from the same device but at different time and also between alerts
indicating different conditions from the same device at the same
time.
25.2.3 Transmission of acknowledgement and silence
signals between the device where the alert was silenced or acknowledged
and the device where it originates and where it may also have to
be silenced/acknowledged.
25.2.4 Transmission mechanisms that avoid that
signals in one or the other directions are lost (by fully reliable
transmissions or by suitable retransmissions).
25.2.5 Mechanisms that allow consistent reconnection
of a component of the INS system to the system after disconnect at
any time and in any alert condition.
25.2.6 In general, mechanisms that allows consistency
in the complete INS with regards to alert management.