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61221002L2-5B A-3
noitcnuFedoCesnopseR
nwodpooL
3,1
3939
100111001001
1100
kcabpoolniyltnerrucstinulla,remotsucrokrowtenehtmorftnesnehW
aekilevahebotredronI.mrasidtonlliwstinudemrA.nwodpoollliw
nikcabpoolkrowtenamorfnwodpooltonlliwR-UT2Heht,kcajtrams
.delbanesikcabpooLUINfinrettap3939ehtotesnopser
kcabpooLyreuQ
2,1
5D5D
101110101011
1010
detcejnieblliwsrorrecigol,krowtenehtmorftnessinrettapehtnehW
.krowtenehtdrawottneserpsikcabpoolaetacidniotkrowtenehtsdrawot
detcejnieblliwsrorrecigol,remotsucehtmorftnessinrettapehtnehW
ehtdrawottneserpsikcabpoolaetacidniotremotsucehtsdrawot
tinutseraenehtybdenimretedsidetcejnisrorreforebmunehT.remotsuc
erasrorre,tnesebotseunitnocnrettapehtsagnolsA.kcabpoolnisitaht
02=R-UT2H(,)srorre132=C-UT2H(sdnoces02yreveniagadetcejni
.)srorre
pooLyreuQ
sretemaraP
2
BDBD
101111011011
1101
detcejnierasrorrecigol,demradnakcabpoolkrowtennisiC-UT2HehtfI
ehtmorfnrettapBDBDehtfonoitcetednopukrowtenehtsdrawot
detcejnierasrorre,tnesebotseunitnocnrettapehtsagnolsA.krowten
sdnepedemithcaedetcejnisrorreforebmunehT.sdnoces02yreveniaga
nosretemarapnoitaunettaeslupdnanigramlangisfosutatstnerrucehtno
.poolhcae
eslupetacidni)R-UT2HdnaC-UT2H(stniopreviecer2LSDHllafI
noitaunetta ≤ )nigram(ytilauqlangisdnaBd03 ≥ erasrorre111,Bd6
02yrevedetcejnierasrorre11,esiwrehto;sdnoces02yrevedetcejni
.remotsucehtmorftnesnehwytilanoitcnufonsahnrettapsihT.sdnoces
emiTkcabpooL
edirrevOtuO
4,2,1
6D5D
101110101011
0110
sinrettapsihtnehwkcabpoolniyltnerrucsitinuarodemraerastinuehtfI
erutaefedirrevotuoemitkcabpooleht,remotsucrokrowtenehtmorftnes
kcabpooleht,sdrowrehtonI.tuoemitkcabpoolelbasidyllacitamotualliw
sA.gnittesnoitpotuoemitkcabpooltnerrucehtoteudtuoemittonlliw
nehW.delbasidniamerlliwtuoemiteht,demraniamerstinuehtsagnol
suoiverpehtottreverlliwtuoemitkcabpooleht,demrasiderastinueht
.gnittestuoemitkcabpool
rewoPnapS
elbasiD
4,2,1
7676
011011100110
1110
eht,remotsucrokrowtenehtmorftnessi7676dnademraerastinuehtfI
sinrettapehtfI.R-UT2Hehtffogninrut,rewopnapselbasidlliwC-UT2H
7676gnolsadelbasideblliwrewopnapseht,krowtenehtmorftnes
C-UT2Heht,deviecerregnolonsinrettapehtecnO.detcetedsinrettap
ehtotnruterdnaniarternehtlliwstinullA.rewopnapsetavitcaerlliw
eht,remotsucehtmorftnessinrettapehtfI.etatsdepoolnudnademrasid
.yliratnemomdelbasidebylnolliwrewopnaps
Table A-1. In-Band Addressable Loopback Codes (Continued)
Note: All codes listed above must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.
* If NIU is enabled, then the H2TU-R can be in network loopback when the H2TU-C loop up codes are sent.
1
The H2TU-C and H2TU-R individually detect and act upon in-band loopback control codes. Depending on which list number of H2TU-R is used with
the Litespan H2TU-C, some of these control codes may not cause action (such as loop up, error injection, etc.) at the H2TU-R. Refer to the H2TU-R
documentation for supported control codes.
2
Units must be armed with 11000b or FF48h before this code will work.
3
In order to behave like a NIU, the H2TU-R will not loop down from the network side with 9393h.
4
This code will be detected only if the units are armed OR if any loopbacks are active.