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CONFIRMATION s=p7 S=p7 S=p7 S=p7 S=p7 S=p7 S=pl
D=20 D=21 D=22 D=23 D=24 0=25 (do not forward)
(see Note 2) (see Note 2) (see Note 2) (see Note 2) (see Note 2)
DATA, interrupt, flow A=ERKOR A=ERROR A=ERROR See Table 5-6 A=ERROR A=ERROR A=DISCARD
control or rcset packets S =p7 S=p7 S=p7 S=p7 S=p7
0=20 P=11 D=22 D=24 0=25
(scc Note 2) (see Note 2) (see Note 2) (see Note 2)
NOTES:
1 . On entering thc p5 state, the DCE reassig~lst he outgoing call to the DTE to at~othcrc hannel (no CLEAR REQUEST is issucd) and responds to
incoming DTE call as appropriate with a CLEAR REQUEST or CALL ACCEPT packet.
2. The error procedure consists of performing the actions specified whcn entering the p7 state (including sending a CLEAR REQUEST packet to
the DTE) and additionally sending a CLEAR REQUEST packet to the XDCE (via the reformatting process).
3. The use of the fast select facility with a restriction on the response prohibits the DTE from sending a CALL ACCEPT packet.
4. The DTE in the event of a cdl collision must discard the CALL REQUEST packet rcccived from the DCE.
5. Table enties are defincd a? follows: A = action to be takcn, S = the state to be entered, D = the diagnostic code to br: used in pxkets generated
as a result of this action, DISCARD indicates that the receivcd packet is to be cleared from the XDLP buffers, and INVALID indicates that the
packet/state combination cannot occur.
Annex 10 - Aeronautical Telecommunications
Table 5-6. DTE effect on DCE reset states
7111B6
No. 71
Packet received frorri DTE
DCE reset states (see Note 2)
FLOW CONTROL RESET REQUEST DCE RESET
READY by DTE REQUEST to DTE
dl 62 d3
Packct with n packet type identifier shorter than 1 A=ERROR A=ERROR A=DISCARD
byte S=d3 S=d3
D=38 D=38
(see Note 1) (scc Note I )
Packct with a packet type identifier which is A=EKKOR A=ERROR A =DISCARD
undefined or not supported by DCE S=d3 S=d3
D=33 D=33
(see Note I ) (see Note 1)
RESTART REQUEST, RESTART A=ERROR A=ERR@R A=DISCARD
CONFIRMATION, or REGISTRATION (if S=d3 S=d3
supported) packet with logical channel identifier D=4l D=41
unequal to 0 (see Note 1) (see Note I)
RESET A=NORMAL A=DISCARD A=NORMAL
REQUEST S=d2 S=dl
(forward) (do not forward)
RESET CONFIRMATION A=ERR@R A=ERROR A=NORMAL
S=d3 S=d3 S=dl
D=27 D=28 (do not forward)
(see Note I) (see Note 1)
INTERRUPT packet See Table 5-7 A=ERROR A=DISCARD
S=d3
D=28
(see Note 1)
INTERRUPT CONFIRMATION packet See Table 5-7 A=ERROK A=DISCARD
S=d3
D=28
(see Note 1)
DATA or flow control packet See Table 5-8 A=ERROR A =DISCARD
S=d3
D=28
(see Note 1)
REJECT supported but not subscribed to A=ERROR A=ERROR A=DISCARD
S=d3 S=d3
D=37 D=37
(see Note 1) (see Note I)
NOTES:
I . The error procedure consists of performing the specified actions when entering the d3 state (which includes forwarding a
RESET REQUEST packet to the DTE) and sending a RESET REQUEST packet to the XDCE (via the formatting
function).
2. Table entries arc dcfined as foilows: A = acdon to be taken, S = the state to be entered, D = the diagnostic code to be
used in packets generated as a rcsult of this action, DISCARD indicates that the received packet is to be cleared for the
XDLP buffers, and INVALID indicates that the packetlstatc combination cannot occur.
Annex 10 - Aeronautical Telecommunications
Table 5-7. DTE effect on DCE interrupt transfer states
Volume ZZI
7/11/96
No. 71
Packet received from DTE
DTE/L)CE interrupt transfer states (see Note 2)
DTE INTERRUPT READY DTE INTERRUPT SENT
i 1 i2
INTERRUPT A=NORMAL A=ERROR
(see Note 1) S=iZ S=d3
(forward) D=44
(see Note 3)
Packet received from DTE
DTE/DCE intempt transfer states (see Note 2)
DCE INTERRUPT READY DCE INTERRUPT SENT
j1
INTERRUPT CONFIRMATION A=ERROR A=NORMAL
(see Note I ) S=d3 S=jl
D=43 (forward)
(see Note 3)
NOTES:
1. If the packet has a format error, then the error procedure applies (see Note 3).
2. Table enlries are defined as follows: A = action to be taken, S = the state to be entered, D = the diagnostic code to be used in
packets generaled as a result of this action, DISCARD indicates that the receivcd packet is to be cleared from the XDLP
buffers, and INVALID indicatcs that the packetlstate combination cannot occur.
3. The error procedure consists of performing the specified actions when entering the d3 state (which includes forwarding a
RESET REQUEST packet to the DTE) and sending a RESET REQUEST packet to the XDCE (via the reformatting process).
Annex 10 - Aeronautical TeZecommunications
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