Description: The value identifies a timeslot on either the ring or the interconnect
SONET interfaces.  This index is a 32 bit number comprised of bit fields.
The algorithm used to determine this index is set so both AppianVista (EMS)
and the Command Line Interface (CLI) can configure this table.  This index
is also used to index rows in trunk shared table for the trunk table 
agent (TTA).

The following bit assignments define the format for the timeslot index:

Bits        Description
-------     -----------------------------------------
 0..2       Virtual Tributary (VT)
 3..5       Virtual Tributary Group (VTG)
 6..15      STS number
16..22      Reserved - Wavelength
23..26      Physical Port number
27..31      Physical Slot number

Note: for additional information refer to trunk shared.mib file.