Alcatel-Lucent 9500 MXC, User Manual, Page: 234 / 916

Chapter 6. 9500 MXC Performance and Diagnostic Features
Vol. II-6-12 Alcatel-Lucent
Locks include a safety timer.
Graphics provide a status summary of the ring protected links.
Data Menu
• For PDH and SDH DACs and Terminals the Data menu provides trib-by-trib
selection of loopbacks, transmit AIS, and PRBS generator with G.821 data
receiver.
• For the Ethernet DACs and IDU ES, it provides data dashboards, plus port and
channel status summaries.
• For protectable DACs the screen enables Tx and Rx locks, and online status
change.
Loopbacks . A loopback or AIS can be enabled on a trib. Line-facing and
radio-facing (bus-facing) loopbacks are supported.
BER Test. A
PRBS generator and G.821 receiver support looped, and both-way
tests on tribs using a standard BER 2
15-1
test pattern. User traffic is replaced by
the PRBS test pattern and results viewed on the G.821 receiver. Information
includes available time, bit errors, errored seconds, severely errored seconds, and
errored second ratios. A test can be applied over a single link or multiple links,
depending on the routing of the circuit under test. The 2
15-1
PBRS test pattern
can also be used in conjunction with an external BER test set.
Safety Timer. Locks, loopbacks, and PRBS options are supported by safety
timers.
Ethernet dashboards
provide overview and detailed graphical presentations of
port and channel throughputs, discards and errors, plus a summary indication of
configured capacities and connection status.
AUX Menu
With the exception of AIS, the AUX menu options are the same as the DAC/
Terminal PDH options.
Circuit Loopbacks
The Circuit Loopback screen enables application of a both-way loopback on the
TDM bus. Applies to a 9500 MXC Node only.
Circuit loopbacks may be applied to E1, E3, DS1, DS3 or STM1/OC3 selections.
Auxiliary data circuits are also supported. Only one Circuit Loopback can be
applied at a time, and only traffic on the selected circuit is affected by circuit
loopback activation.
In conjunction with the built-in PRBS Generator in DAC plug-ins, the circuits
loopback function provides a user-friendly tool for tracing and checking a circuit
through a network of 9500 MXC Nodes.