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reformatting process.
GDLP(ADLP) RESET REQUEST
ADCE(GDCE) RESET REQUEST to
GDLP(ADLP)
Remove Mode S DATA packets transmitted to peer XDCE from window; d~scarda ny
DATA packets that wpresent partially transmitted M-bit sequences and discard any Mode
S INTERRUPT packets awaiting transfer to the peer XDCE; reset all flow control
window counters to 0 (5.2.6.7.1). Forward Mode S RESET REQUEST packet to peer
XDCE via frame processing.
GDLP/ADLP) INTERRUPT READY
GDLP(ADLP) INTERRUPT SENT
No action.
Forward Mode S INTERRUPT packet received from peer XDCE to the reformatting
process.
ADCE(GDCE) INTERRUPT READY No action.
ADCB(GDCE) INTERRUPT SENT Forward Mode S INTERRUPT packet received from the reformatting process.
ADCE(GDCE) RECEIVE READY No action.
ADCE(GDCE) RECEIVE NOT
READY
No action.
GDLP(ADLP) RECEIVE READY No action.
GDLP(ADLP) RECEIVE NOT
READY
No action
28/11/02
No. 77
Arlrlex I 0 - Aerorrautical Telecommvrzicalions Volurne 111
Table 5-15. GDLP (ADLP) effect on ADCE (GDCE) packet layer ready statcs
Packet received from GDLP (ADLP)
(see Note 2)
ADCE (GDCE) states
(see Notes 1 and 3)
PACKET LEVEL READY
rl
CH=O with no TC prescnt (sec Note 4) or A =DISCARD
CH=O in a CALL ACCEPT by ADLP packet
Unassigned packet header A=DISCARD
Call setup, call clearing, DATA, interrupt, flow conuol, or reset See Table 5-16
NOTES.
I . The XDCE state is not necessarily the same state as the DTE/DCE interface.
2. All packets from the peer XDLP havc been checked for duplication before evaluation as represented by this table.
3. Table entries are dcfined as follows A = action to bc taken, S = the state to be entered, D = the diagnostic code to be used in packets
generated as a result of this action, DISCARD indicates that the received packet is to be cleared from the XDLP buffers, and lNVALlD
indicates that the packevstate combination cannot occur.
4. Where CH=O and a valid TC is present in a CLEAR REQUEST by ADLP or GDLP packet or a CLEAR CONFIRMATION by ADLP or
GDLP packet, it is handlcd as described in 5.2.5.1.2.3 and Table 5-16.
Part Z Annex I0 - Aeronautical Telecommunications
Table 5-16. GDLP (ADLP) effect on ADCE (GDCE) call setup and clearing states
28/11/02
No. 77
Packet received from
GDLP (ADLP)
(see Note 2)
ADCE (GDCE) call setup and clearing States
(See Notes 1, 7 and 8)
AUCE (GDCE)
GDLP (ADLP) ADCE (GDCE) GDLP (ADLP) CLEAR
CALL CALL DATA CLEAR REQUEST to
READY REQUEST REQUEST TRANSFER =QUEST GDLP (ADLP)
P 1 ~2 ~3 ~4 ~6 p7
Format error A=ERROR A=ERROR A=ERROR See Table 5- 17 A=ERROR A=DISCARD
(see Note 3) (see Notc 10) S=p7 S=p7 S=p7
S=p7 D=33 D=33 0=25
D=33 (see Note 6) (see Notes 6 & 9) (see Note 6)
(see Note 9)
CALL REQUEST A=NORMAL A=ERROR Not applicable Not applicable A=ERROR A=DISCARD
(5.2.6.3.1) S=p7 (see Note 4) (see Note 4) S=p7
S=p2 D=21 D=25
(forward request to (sce Note 6) (see Note 6)
DCE)
CALL ACCEPT ATERROR A=ERROR A=NORMAL A= ERROR A=ERKOR A = DISCARD
S=p7 S=p7 (5.2.6.3.1) S =p7 S=p7
D=20 D=2 1 S=p4 (forward D=23 D=25
(see Note 10) (see Note 6) to DCE), or (see Note 6) (see Note 6)
A=ERROR
S=p7
D=42
(see Note 6)
CLEAR REQUEST A=NORMAL A=NORMAL A=NORMAL A=NORMAL A=DISCARD A=NORMAL
(5.2.6.3.3) (5.2.6.3.3) (5.2.6.3.3) (5.2.6.3.3) (5.2.6.3.3)
S=p6 S=p6 S=p6 S=fi S=p 1
(do not forward) (forward to DCE) (forward to DCE) (forward to DCE) (do not forward)
CLEAR A=ERROR A =ERROR A=ERROR A = ERROR A= ERROR A=NORMAL
CONFIRMATION S=p7 S=p7 S=p7 S=p7 S=p7 (5.2.6.3.3)
D=20 D=2 1 D=22 D=23 D=25 S=pl
(see Note 10) (see Note 6) (SW Note 6) (see Note 6) (see Note 6) (do not forward)
DATA, interrupt, flow A=ERROR A=EREKROR A=ERROR See Table 5-17 A=ERROR A =DISCARD
control or reset packets S=p7 S=p7 S=p7 S=p7
D=20 D=21 D=22 D=25
(see Note 10) (see Notes 6 & 9) (see Notes 5 & 6) (see Note 6)
NOTES:
1. The XDCE is not necessarily in the same state as the DTUDCE interface.
2. All packets from the peer XDLP have been checked for duplication before evaluation as represented by this table.
3. A format error may result from an S-bit sequence having a first or intermediate packet shorter than the maximum length, or else from an invalid LV
field in a CALL REQUEST, CALL ACCEPT, CLEAR REQUEST or INTERRUPT packet. There are no other detectable Mode S format errors.
4. The ADCE assigns all channel nurnbcrs used between the ADLP and GDLP, hence call collisions are not possible. When a CALL REQUEST by
GDLP packet is received bearing a. temporary channel number associated with an SVC in the p4 state, the association of the temporary to permanent
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