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Chapter 4. Status
4-6 T3SU 300 User Manual 61200217L1-1
Bandwidth
Displays the amount of bandwidth currently being used by the
port.
DTE Leads
If a lead is active on the port, it is displayed in this field. The leads
differ according to the interface type. Lead descriptions for both the
HSSI and the V.35 interfaces follow.
:
HSSI Interface
Leads
Condition
TA (terminal available) Asserted by the DTE to indicate readi-
ness to transmit data.
CA (communications
equipment available)
Asserted by the T3SU 300 to indicate
readiness to transmit data.
LA (loopback circuit A) The condition reflected by this lead is
dependent upon the LB lead. See Table
4-1 on page 4-7.
LB (loopback circuit B) The condition reflected by this lead is
dependent upon the LA lead. See Table
4-1 on page 4-7.
LC (loopback circuit C) Asserted by the unit to request a loop-
back from the DTE.
TM (test mode) Asserted by the T3SU 300 when either
the network or the port is being tested.
Both TA and CA must be on before data will flow.