ADTRAN DS3 NIU3 PM, Установка и эксплуатация

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61213075L2-5E Issue 5, February 2011 7
Table 3. Fault Conditions
Condition Detected Direction of Transmission Transmission
LOS detected on Network
Interface Network Interface to Customer
Interface Unframed all ones signal is transmitted to the
Customer Interface
Customer Interface to Network
Interface RAI is transmitted to the Network Interface
LOF detected on Network
Interface Network Interface to Customer
Interface If “Send AIS/RAI when LOF detected” = Disabled,
then unframed DS3 payload is transparently passed
through to the Customer Interface.
If “Send AIS/RAI when LOF detected” = Enabled,
then unframed DS3 payload is transparently passed
through to the Customer Interface.
Customer Interface to Network
Interface If “Send AIS/RAI when LOF detected” = Disabled,
then Customer Interface signal is transparently
passed through to the Network Interface.
If “Send AIS/RAI when LOF detected” = Enabled,
then RAI is transmitted to the Network Interface.
AIS detected on Network
Interface Network Interface to Customer
Interface AIS is transparently passed through to the Customer
Interface.
Customer Interface to Network
Interface RAI is transmitted to the Network Interface.
LOS detected on Customer
Interface Customer Interface to Network
Interface AIS, IDLE, NO SIGNAL, or AIS-CI is transmitted
to the Network Interface. This depends on the
provisioning of the “Customer LOS” option.
LOF detected on Customer
Interface Customer Interface to Network
Interface If “Send AIS/RAI when LOF detected” = Disabled,
then unframed DS3 payload is transparently passed
through to the Network Interface.
If “Send AIS/RAI when LOF detected” = Enabled,
then AIS-CI is transmitted to the Network Interface.
AIS detected on Customer
Interface Customer Interface to Network
Interface AIS-CI is transmitted to the Network Interface.
RAI detected on Customer
Interface Customer Interface to Network
Interface RAI-CI is transmitted to the Network Interface.