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8 61190860L1-5BSection 61190860L1-5, Issue 2
7. PROTECTION SWITCH
Remote provisioning for a protection switch can be
accomplished by sending a specific sequence of
in-band or out-of-band messages. These remote
provisioning commands are transmitted to the
controller card from a remote test facility or a T1 test
set at a DSX panel.
Arming
Arming the controller card prevents an inadvertent
protection switch operation. The controller card can
be armed with the presence of the appropriate in-band
or out-of-band pattern on the network receive
interface. Disarming the controller card can be
accomplished with the presence of an in-band (11100)
or out-of-band (ESF datalink) NIU loop down pattern
on the network receive interface, a 1-hour time out, a
protection switch, or a manual reset. See Figure 4 for
arming activation.
In-Band Slot Enable/Disable Protocol
See Table 4 for in-band slot enable/disable protocol.
Table 4. In-Band Enable/Disable Protocol
petS
dnaB-nIEOC
snrettaPdnammoC
nrettaPdnaB-nIdraCrellortnoC
1edoCgnimrAdneSxeH044C.edoCgnimrAehtkcabpooL
2
roelbanEtolSdneS
edoCelbasiD
elbanExeH045C
elbasiDxeH046C
neht,ceS5rofedocelbasiD/elbanEehtkcabpooL
sinrettaplitnutaepeR.ceS5rofcnySoN
.devomer
3
eniLnoitcetorPdneS
XerehwX44ChctiwS
rebmunenil=
xeHX44C
rebmuNeniL=X
rebmunenil=XerehwedocX44CehtkcabpooL
litnutaepeR.ceS5rofcnySoNneht,.ceS5rof
.devomersinrettap
4nrettaPevomeR
noitcetorprofdelbasiDrodelbanEwonsitolS
.gnihctiws
Figure 4. Arming Operation