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Page 2-35
22 Apr 2019
23-15-49
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ASPIRE-400
1 ANSWER CALL command received from the Call display and control
protocol
2 Associated Cockpit Voice Mic On discrete is in the on state.
(d) In Latched mode, the ACD connects the 4-wire Audio path for the mic:
1 From when the call is connected
2 Until the call is terminated.
NOTE: This applies to Air to Ground and Ground to Air calls.
(e) In Latched mode, the ACD initiates an Air Clear (reverting the call state to idle
from the airplane side) on any of the following conditions:
1 END CALL is signaled on the call-display-and-control protocol
2 Associated Cockpit Voice Mic On discrete input is off
3 Call clearing is caused by a Mic switch transition to high.
H. Satellite Facing Voice Handling
(1) The ACD PBX routes Air-to-Ground calls to unused connections in the following order:
(a) The AMBE +2 CS connection
(b) VoIP over PS connection.
(2) Based on ORTconfiguration, PS or CS Ground-to-Air call requests of public priority is:
(a) Rejected
(b) Routed to the 4-wire interfaces.
NOTE: The ORT configuration settings are mutually exclusive.
(3) The ACD PBX routes Ground-to-Air calls to 4-wire interfaces as follows:
(a) To ORT defined 4-wire default interface if available.
(4) The ACD PBX permits short code (a number <= 6 digits) dialing on both:
(a) The VOIP service
(b) Circuit switched service.
For calls placed on the following ORT enabled interfaces:
(c) 4-wire1
(d) 4-wire2.
(5) If ORT permitted, the ACD PBX permits direct user entry of full international numbers
(maximum number of digits = 18 on both):
(a) The VOIP service
(b) Circuit switched service.
(6) For calls placed on any the following ORT enabled interfaces:
(a) 4-wire1, The SDU does not support automatic redial on Air-to-Ground call fail.
(b) 4-wire2, The SDU does not support automatic redial on Air-to-Ground call fail.
I. Safety Circuit Switched (CS) Voice Service
DRAFT
3rd rvw Draft as of:
29 January, 2020