Paradise Datacom P300 Series Installation & Operating Handbook page 59

If is chosen then the dialogue ends here, otherwise it proceeds with the Backward alarm option
as follows:
Change, Tx/Rx, Service, Closed Net, Plus ESC, BA Menu
A Backward alarm facility is provided causing a deferred alarm to be raised on this local
equipment if the distant end Rx fails for any reason (eg local Tx failure, or distant Rx failure). The
proportion of the overhead assigned to the ESC drops slightly (68% to 65%), so the overhead may
increase marginally to provide the same async ESC rate.
No Backward Alarm is sent (Tx) or received (Rx) and so slightly more of the
overhead is available to the async ESC, lowering the total overhead marginally.
See "Overhead Rates" in section 8.7.1 on page 149 for details of the overhead percentage requirements
for differing mixes of main data and async ESC data rates.
P300H P300 Series Modem Installation and Operating Handbook
Baseband modes (ie both Continuous Data or both Drop/Insert).
Backward Alarm facility:[?]
1=Normal (Back' Alm) 2=No Backward Alarm
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