10.2.8 Tributary Scan
This function requires VC12 or VT-1.5 mapping and allows for a quick check of the signal structure, trace identifier, and the
payload.
Tributary Scan
An important part of any Add Drop Multiplexer (ADM) installation process is the verification of the path routing. Considering that
an STS-3 contains 84 x VT-1.5’s and a STS-12 contains 336 x VT-1.5’s checking each path manually can be very time
consuming.
The test set automatically performs a sequential BER test on each SONET tributary (VT channel) - mapping can be via STS-N.
The unit checks for any alarms in the received signal, the SONET structure, and for synchronization of the selected test pattern
in all channels. The result for each channel is entered in a table:
K.L.M.:
ITU-T Tributary numbering scheme
Report:
Pass (OK)
J2 trace:
Corresponds to the VT trace being transmitted
Label:
Corresponds to the V5 byte signal label being transmitted
10.2.9 Tandem Connection Monitoring (TCM)
HP Setup
RXT-3900 e-Manual D07-00-111P Rev A00
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