Manuel CPDLC V3.0. - Service d'Information Aéronautique Enna

3.2 The CPDLC Connection Sequence
Initial
AFN logon
With ATSU(N)
CPDLC connection
ATSU(N)- Aircraft
=====>
ATSU(N)- Aircraft
Active connection
Next Data
Authority
ATSU(N+1)
3.3 The AFN Logon
Figure 1: Life Sequence of the CPDLC Connection
3.3.1 Prerequisite for CPDLC and / or ADS-C connection
The AFN logon is a prerequisite to any CPDLC or ADS-C connection.
3.3.2 Initiating an AFN logon
The AFN logon can be initiated:
AFTN logon
Initiated by
Address
Forwarding
relating
To ATSU(N+1)
• Manually by the pilot during an "initial logon", or
• By an Algiers ACC using the address forwarding process.
3.3.3 Address of Algiers ACC (ATSU)
Algiers ICAO Facility designation: DAAA
Address ACARS: ALGCAYA
Address RSFTA: DAAAZQZR
Call sign: Maghreb Algiers control
N=N+1
CPDLC connection
ATSU(N+1)- Aircraft
=====>
ATSU(N+1)- Aircraft
Non Active connection
CPDLC disconnection
ATSU(N)- Aircraft
=====>
ATSU(N+1)- Aircraft
Active connection
Operation Manual of CPDLC V3.0 Algiers FIR 11