VeEX RXT-6000e, User Manual

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10.1.9 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.
An important part of any Add Drop Multiplexer (ADM) installation process is the verification of the path routing.
Considering that an STM-1 contains 63 x VC-12’s and a STM-4 contains 252 x VC-12’s checking each path manually
can be very time consuming.
The unit automatically performs a sequential BER test on each SDH tributary (C12 channel) - mapping can be either
via AU-4 or AU-3. The unit checks for alarms in the received signal, the SDH 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
Tributary Scan
RXT-6200_RXT6000e_Module_Manual Page 145 of 387