User manual

68
Diagram explanation
Everydeviceisindicatedwithadifferentcolour,andnexttoeverydeviceisatable
shown with8 incoming fiber audio channels and8 outgoingfiber audio channels.
Betweentwodevices,aconnectionlineisshownrepresentingthefiberconductor,
andnexttothisconnectionlineisalwaysatableshownwhichindicatestheaudio
channelsthefiberconductoriscarryingatthispoint.Theaudiochannels between
the output from the previous device  andthe input of the next device are always
unchanged. Thisisclearlydisplayedbymeansofthetext colourinsidethe tables.
WhenAPMpagingconsolesareconnectedandpagingoverfiberenabled,thenchannel“Fb
1”isdedicatedforpaginguseandcan’tbeusedtoexchangeotheraudiochannels.Forthis
reason,channel“Fb1”isalwaysmarkedwith“Paging”.
Anoverviewoftheaudiosignalstransmittedoverthefiberinterface:
- Fiber channel 1 (Fb 1): Thischannelisdedicatedforpagingpurposes
- Fiber channel 2 (Fb 2): TheRedR2(R005)transmitsanaudiosignaloverfiber 
    channel“Fb2”.Thissignalreachesalldevicesandcan
    beusedbyalldevices.
- Fiber channel 3 (Fb 3): Sameaschannel“Fb2”,theRedR2(R005)transmitsan
    audiosignaloverfiberchannel“Fb3”.Thissignal
    reachesalldevicesandcanbeusedbyalldevices.
- Fiber channel 4 (Fb 4): TheYellowR2(R001)transmitsanaudiosignaloverfiber
    channel“Fb4”.Thissignalreachesalldevicesandcan
    beusedbyalldevices.
- Fiber channel 5 (Fb 5): TheBlueR2(R003)transmitsanaudiosignaloverfiber
    channel“Fb5”.Thissignalreachesalldevicesandcan
    beusedbyalldevices.
- Fiber channel 6 (Fb 6): Channel6isusedbytwoR2’s.TheOrangeR2(R004)
    transmitsanaudiosignaloverfiberchannel6“Fb6”,and
    thissignalreachestheRedR2(R005),theYellowR2
    (R001)andtheGreenR2(R002).TheGreenR2(R002)
    replacesthesignalonfiberchannel“Fb6”byanother
    audiosignal,andthisaudiosignalreachestheBlueR2
    (R003)andtheOrangeR2(R004).
-Fiber channel 7 (Fb 7): Fiberchannel7(Fb7)isusedbyallR2’s.EveryR2
    receivesandtransmitsanaudiosignaloverthischannel.
    Thisway,everyR2canuseasourceofthepreviousR2
    andreplaceitbyanothersignalwhichcanbereceivedby
    thenextR2intheringnetwork.
- Fiber channel 8 (Fb 8): Sameaschannels“Fb2”and“Fb3”,theRedR2(R005)
    transmitsanaudiosignaloverfiberchannel“Fb8”.This
    signalreachesalldevicesandcanbeusedbyalldevices.