Users Manual

ALL
EFFECTIVITY
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 7-10
22 Apr 2019
23-15-49
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ASPIRE-400
(h) True track (when the speed is > 50 kts.)
F. AAP (Safety Data Gateway) Log Off
(1) The ACD sends a logoff request if any of the following occurs, and populates in the logoff
request matching (cause codes) termination reason:
(a) 0010 0001 Pending satellite change
(b) 0010 0010 Leaving SB coverage
(c) 0011 0001 Time-out loss of Ground-to-Air link
(d) 1000 1111 Undefined AES fault.
(2) When the ACD ADGW receives logoff notification from the GDGW with one of the
following reason codes:
(a) 1001 0001 Failed connection to service provider
(b) 1010 0001 By GDGW operator
(c) 1010 0010 GDGW performing a site switch
(d) 1101 0010 Return link inactivity
(e) 1111 1110 Undetermined reason.
(3) The ACD:
(a) Indicates LEAVE to CMU via label 271;
(b) Attempts to re-establish logon to GDGW after hold off time specified on logoff
notification message.
G. Datalink Service Status Reporting to the CMU
(1) When ACARS and/or ATN/OSI (as defined in the ORT) logon is successfully completed
the ACD issues a "join" event to the CMU.
(2) When the AAP connection is recovered for any service after previously issued "leave" for
that service the system issues corresponding "join" indication to the CMU.
H. AAP Link interruption
(1) Any service failure leading to a scenario where:
(a) Forward bearer and PDP context are present; and
(b) AAP link is broken.
(2) Is reported to the CMU as "Leave" no later than AAP_timeout + 2 seconds after the last
AAP message (data or signaling) has been received from the ground.
(3) Loss of forward link bearer is reported to the CMU as "Leave" event no later than 5
seconds after the loss has been detected by the AES.
(4) Any event leading to explicit or implicit deregistration of AES is reported to the CMU as
"Leave" event:
(a) No later than ac_aap_t5+5 seconds; and
(b) No earlier than ac_aap_t5 seconds.
DRAFT
3rd rvw Draft as of:
29 January, 2020