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7/11/96
No. 71
Part I Annex 10 - Aeronautical Telecommunications
Table 5-4. DTE effect on DCE restart states
7/11/96
No. 71
Packet received from DTE
DCE restxt states (set Note 5)
DCE
PACKET LEVEL DTE RESTART RESrART
READY (see Note I) REQUEST REQUEST
rl r2 r3
Packets having a packet type identifier shorter than 1 See Table 5-5 A=ERROR A=DJSCARD
byte and logical channel identifier not equal to 0 S=r3
0=38
(scc Note 4)
Any packet, except RESTART, REGISTRATION (if A =DIA F A =DIAG A=DIAG
supported) with a logical channel identifier of 0 0=36 0=36 0336
Packet with a packct type identifier which is undefined See Table 5-5 A=ERROR A=DlSCARR
or not supparted by DCE S=A
D=33
(see Note 4)
RESTART REQUEST, RESTART CONFIRMATION, See Table 5-5 A =ERROR A=DlSCARD
or REGISTRATION (if supported) packet with a logical S= r3
channel identifer unequal to 0 D=41
(see Note 4)
RESTART REQUEST A=NORMAL A =DISCA RD A=NORMAL
(forward) S=pl or dl
S=r2 (see Note 2)
RESTART CONFIRMATION A=ERROR A=ERROR A=NORMAL
S=r3 S= r3 S=pl or dl
D= 17 D=18 (see Note 2)
(see Note 6) (see Note 4)
RESTART REQUEST OR RESTART A=DIAG A =DISCARD A=ERROR
CONFIRMATION packet with a format error 0-38,39, 81 or 82 D=38,39,81
or 82
'REGISTRATION REQUEST or REGISTRATION A=NORMAL A=NORMAL A=NORMAL
CONFIRMATION packets (see Note 3)
REGISTRATION REQUEST or REGlSTRATION A=DIAG A=ERROR A=ERROR
CONFIRMATION packet with a format error (see Note D=38,39, 81 or 82 S=r3 0=38,39,81
3) D=38,39, 81 or 82 or 82
(see Note 4)
Call setup, call clearing, DATA, interrupt, flow control, See Table 5-5 A=ERROR A =DISCARD
or reset packet S=r3
R=l8
NOTES:
1. The Mode S subnetwork has no restart states. Receipt of a RESTART REQUEST causes the DCE to respond with a
RESTART CONFIRMATION. The RESTART REQUEST packet is forwarded to the reformatting process, which issues clcar
requests for all SVCS associated with the DTE. The DCE enters thc r3 state only as a result of an error detected on the
DTE'DCE interface.
2. The SVC channels are returned to stale pl, the permanent virtual circuits (PVC) channels are returned to state dl.
3. The use of the registration facility is optional on the DTE/DCE interface.
4. No action is taken within the Mode S subnetwork.
5. Table entries are defined as follows: A = action ro be taken, S = the state to be entered, D = the diagnostic code to he used in
packets generated as a result of this action, DISCARD indicates that thc received packet is to be cleared for the XDLP
buffers, and INVALJD indicates that the packetktatc combination cannot occur
6. The error procedure consists of entering the r3 state, and scnding a RESTART REQUEST to the reformatting process.
Annex I0 - Awonuutical Xelecommunications
Table 5-5. DTE effect on DCE call setup and clearing states
Volume 111
7/11/Y6
No. 71
Packet received from
DTE
DCE call setup and clearing states (see Note 5)
CALL
COLLISION DCE CLEAR
DTE CALL DCE CALL DATA pS DTE CLEAR REQUEST to
READY REQUEST REQUEST TRANSFER (see Notes 1 REQUEST DTE
P 1 ~2 ~3 ~4 and 4) ~6 ~7
Yackcts having a packet A-ERROR A=ERROR A=ERROR See Tablc 5-6 A=ERROR A=ERROR A=DISCARD
type identifier shorter S=p7 S=p7 S=p7 S=p7 S=p7
that1 1 bytc D=38 D=38 D=38 D=38 D-38
(see Note 2) (see Note 2) (sec Note 2) (see Note 2)
Packets having a packet A=ERROR A=ERROR A=ERROR See Table 5 4 A=ERROR A=EKROR A=RISCARD
type identifier which is S=p7 S=p7 S=p7 S=p7 S=p7
undefined or not D=33 D=33 0=33 D=33 D=33
supported by DCE (see Note 2) (see Notc 2) (sce Note 2) (see Notc 2)
RESTART REQUEST, A =ERROR A=ERROR A=ERROR See Table 5-6 A=EKROR A=ERROA A=DISCARD
RESTART S=p7 S=p7 S=p7 S=p7 S=p7
CONFIRMATION or D=41 R=41 D=41 D=41 D=41
REGISTRATION (see Note 2) (see Note 2) (see Note 2) (see Note 2)
packet with logical
channel identifier
unequal to 0
CALL REQUEST A=NORMAL A-ERROR A=NORMAL A=ERROR A=ERROR A=ERROR A=DISCARD
S=p2 S=p7 S=pS S=p7 S=p7 $=p7
(forward) 0=21 D=23 D=24 D-25
(see Note 2) (see Note 2) (scc Note 2) (see Note 2)
CALL ACCEPT A =ERROR A=ERAOR A==NORMAL A=ERROR A=EAROR A=ERROR A=DISCARR
S=p7 S=p7 S=p4 S=p7 S=p7 S=p7
D=20 0=21 (Forward) 0=23 D=24 D=25
(see Note 2) or A=ERROR (see Notc 2) (see Notes 2 (see Note 2)
S=p7 and 4)
D=42
(see Notes 2
and 3)
CLEAR REQUEST A=NORMAL A-NORMAL A=NORMAL A=NORMAL A=NORMAL A=DISCARD A=NORMAL
S=p6 S=p6 S=p6 S=p6 S=p6 S=pl
(forward) (forward) (forward) (forward) (do not Eonvard)
CLEAR A=ERROR A = ERROR A-ERROR A=ERROR A-ERROR A=EKROR A=NORMAL
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