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Chapter 4. Status
61200217L1-1 T3SU 300 User Manual 4-7
Table 4-1. LA and LB Leads
V.35 Interface Leads
RS: Request to send
CS: Clear to send
CD: Carrier detect
TR: Data terminal ready
SR: Data set ready
LL: Local DTE port loopback
RL: Remote port payload loopback
TM: Test mode. Asserted by the T3SU 300 when either the
network or the port is being tested.
LA LB Condition
Off Off No test (normal)
On Off Local line loopback
Off On Remote line loopback
On On Local DTE loopback