Chapter4HardwareBoard
LEDs
StateDescription
RUN
Off:controlswitchingboardisfaulty
Flash:controlswitchingboardisworking
normally
MST
ALM
Off:controlswitchingboardalarmiscleared
On:controlswitchingboardalarms
RUN
On:boardisinactivestatus
Off:boardisinstandbystatus
RES
ALM
On:active/standbystatusisabnormal
Off:active/standbystatusisnormal
ACT
Flash:datatransmissionandreceptioninthe
interface
LINK
On:interfacelinkiscreated
Off:interfaceisdisconnectedfromothers
ButtonsTherearetwobuttonsonfrontpanelofthecontrolswitching
board.FunctionsaredescribedinT able23.
TABLE23FUNCTIONDESCRIPTIONOFBUTTONS
Buttons
Function
RST
Boardresetbutton:toresettheboard
EXCH
Boardswitchoverbutton:switchthecontrol
switchingboardtostandbystate.Ifthisbutton
ispressedinthestandbyboard,systemstops
performinganyoperation
RS-8902-MCSBoard
FunctionRS-8902-MCSisMCSofZXR108902,hasmaster/slaveswitchover
function,andisconīæguredwith1+1redundancy.
PanelRS-8902-MCSfrontpanelisshowninFigure24.
FIGURE24FRONTPANELOFRS-8902-MCS
InterfaceRS-8902-MCSboardhasthefollowingtypesofinterfaces.
ļæ½ConsolePort
Consoleportconnectsthebackgroundmanagementterminal,
onwhichitperformsoperationandmaintenanceofZXR10
ConīædentialandProprietaryInformationofZTECORPORATION35