Verilink T Lite (34-00292.2) Product Manual - Manual (Page 15)

3
T
ESTING
Introduction
This chapter describes the diagostic and test features of the
Verilink T Lite. The unit is controlled manually using front panel
DIP switches (the DIP switches are discussed on page 13). The
front panel indicators and side bantam jacks are described below.
Indicators
The unit indicators convey major alarm conditions and looping
status.
Power This green indicator lights when power is applied to the unit.
Loopback This amber indicator lights under the following conditions: the
NET LOOP switch is set to Manual, the EQUIP LOOP is placed
in the Enabled position, or the unit receives an in-band loop code
for greater than five seconds.
Network
LOS
This red indicator lights if the internal alarm circuitry detects a
loss of signal condition for
≥
175 bit times from the network.
The indicator stays lit until the unit detects
≥
4 pulses in 32 bit
times.
DTE
LOS
This red indicator lights if the internal alarm circuitry detects a
loss of signal condition for
≥
175 bit times from the DTE. The
indicator stays lit until the unit detects
≥
4 pulses in 32 bit times.