Comtech EF Data MIDAS Version 4.X NMS Configuration - Manual (Page 87)

MIDAS 4.X NMS Configuration, Rev.6
Setup and Operation 2–59
CAUTION
The MIDAS System will activate a call if one or more of the channels is
already in the Active Call. It is the MIDAS operator’s responsibility to ensure
that any channel selected is active and available to prevent an active call from
being pre-empted.
A A c c t t i i v v a a t t i i o o n n
Select the Activation type for the Predefined Circuit.
Permanent – this type of Predefined Connection is typically used as a
dedicated, exclusive connection for guaranteed availability.
• RTS – Request to Send; this type of Predefined Connection can be
established only from a remote site, and is typically used as an emergency
backup for circuit restoration purposes when terrestrial circuits fail.
Calls that retry:
Calls that don't retry:
Permanent Remote-initiated calls
Retry only applies to abnormal termination and startup failures. Normal
termination will always end a call without retry, and in the case of a permanent
call, a normal termination will set the circuit to disabled.
The permanent call option for the DC command at the node's user port creates a true
permanent call, which will retry. If the call is terminated later from the user port via the
TE command, this will disable the permanent circuit, since it will be a normal
termination.
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