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(4.5.5.2)
S = p 6
(forward)
A = ERROR
S = p7
D = 24; see
Notes 2 and 4
A = NORMAL
(4.5.5.2)
S = p6
(forward)
A = ERROR A = DISCARD
S = p7
D = 25
see Note 2
A = DISCARD A = NORMAL
(4.5.5.4)
S = pl
(do not forward)
CLEAR A = ERROR A = ERROR A = ERROR A = ERROR A = ERROR A = ERROR A = NORMAL
CONFIRMATION S = p7 S = p7 S = p7 S = p7 S = p7 S = p7 (5.5.4)
r) = 20 D=21 D - 22 D - 23 D = 24 D =25 S = p l
see Note 2 see Note 2 see Note 2 see Note 2 see Note 2 (do not forward)
Data, interrupt. flow A = ERROR A = ERROR A = ERROR see Table 4-32 A = ERROR A = ERROR A = DISCARD
control or reset ~ackets S = p7 S = p7 S = p7 S ;p7 S = p7
D = 20 D=21 D = 22 D = 24 D = 25
see Note 2 see Note 2 see Note 2 see Note 2
I NOTES: I
1. On entering the p5 state. the DCE sends a clear request packet to the IWF. corresponding to the incoming call (the DTE in its call collision state
ipnms the incoming call), and proceed with the DTE call request.
2. The error procedure consists of performing the actions specified when entering the p7 state (including sending a clear indication packet to the
DTE) and additionally sending a clear request packet to the IWE
3. The use of faqt select facility with restriction on rcsponse prohibits the DTE from sending a call accepted packet.
4. The DTE in the event of a call collision must discard the call request packet received from the DCE.
5. Table entries are defined as follows: A = action to be taken. S = the state to be eniered, D = diagnostic code to be used in packets generated as a
result of this action, and discard indicates that the received packet is to be cleaned from the buffers.
6. The number in parentheses below an "A = normal'' table entry is the paragraph number in IS0 8708. second edition. The DCE shall rake the same
actions as the one taken by the DTE, acting as a DCE, to perform normal processing on the received packet. If no paragraph number is referenced
the normal processing is defined in the table entry.
7. If the packcr is acceptable to the state of the logical channcl (i.e. action = normal) but contains a fomal error or is othcrwise unacceptable. then
rhc DCE shall initiate a connection release procedure (diagnostic codes that may apply include 34, 38, 39. 65, 66, 67, 68, 69, 73, 77. 82). If such
an error is detected in state pl or state p7, the DCE does not send a clear request packec to the IWE
Annex 10 - Aeronautical Telecommunications Volume ZZZ
Table 4-32. DTE effect on DCE reset states
1 Packet received from DTE
I DCE reset states (see Notes 2 and 3)
FLOW RESET RESET
CONTROL REQUEST INDICATION BY
READY by DTE DCE to DTE
d 1 d2 d3
Packet with a packet type identifier shorter than
1 octet
Packet witb a packet type identifier which is
undefined or not supported by DCE
RESTART REQUEST, or RESTART
CONFIRMATION packet witb logical channel
identifier <> 0
RESET REQUEST
RESET CONFIRMATION
INTERRUPT packet
INTERRUPT CONFIRMATION packet
DATA or flow control packet
A = ERROR
S = d3
D = 38
(see Note 1)
A = ERROR
S = d3
D = 33
(see Note 1)
A = ERROR
S = d3
D-41
(see Note 1 )
A = NORMAL
(8.2)
S = d 2
(forward)
A = ERROR A = DISCARD
S = d3
D = 38
(see Note 1)
A = ERROR A = DISCARD
S = d3
D = 33
(see Note 1)
A = ERROR A = DISCARD
S = d3
D=41
(see Note 1)
A = DISCARD A = NORMAL
(8.3)
S = dl
(do not forward)
A = ERROR A = ERROR A = NORMAL
S = d3 S = d3 (8.4)
D = 27 D = 28 S = dl
(see Note 1) (see Note 1) (do not forward)
see Table 4-33 A = ERROR A = DISCARD
S = d3
D = 28
(see Note 1)
see Table 4-33 A = ERROR A = DISCARD
S = d3
D = 28
(see Note 1)
see Table 4-34 A = ERROR A = DISCARD
S = d3
D = 28
(see Note 1)
NOTES:
1. The error procedure consists of performing the specified actions when entering the d3 state (which includes forwarding a reset
indication packer to the DTE) and sending a resct request packet to the IWF.
2. Table entries are defined as follows: A = action to be taken, S = the state to be entered, D = the diagnostic code to be used in
packets generated as a result of this action, and discard indicates that the received packet is to bc cleared from the AES buffers.
3. The number in parentheses below an "A = normal" table entry is the paragraph numbcr in IS0 8208, second edicion. The DCE
shall take the same actions as those taken by the DTE to perform normal processing on the received packet. If no paragraph is
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