Verilink C100 (880-502893-001) Product Manual - Manual (Page 42)

LED Indicators and Diagnostics
4-2 Verilink C100 and C150 T1/FT1 CSU/DSU 6/15/99
Channel LED Indicators
On the C150, the first three Customer Interface LEDs are used for
DSX1. The C100 instead has three other Customer Interface LEDs: RTS,
CTS, and DSR, which are not found on the C150.
C150 only CI DSX1 TX DAT
The CI DSX1 TX DATA LED is lit whenever CI DSX1 TX DATA is
spacing. The color of this LED is green.
CI DSX1 RX DAT
The CI DSX1 RX DATA LED is lit whenever CI DSX1 RX DATA is
spacing. The color of this LED is green.
CI DSX1 LOCK
The CI DSX1 LOCK LED is green when the T-1 CSU/DSU is frame
locked to the T-1 stream coming from the customer equipment. This
LED will be red when no framing is detected from the customer
equipment. This LED will be not be lit when the CI DSX1 channel is
disabled with the DIP switches. The color of this LED is red/green.
CI Chan TX DATA The CI Channel TX DATA LED is lit whenever CI Channel TX DATA to
the customer equipment is spacing. The color of this LED is green.
CI Chan RX DATA The CI Channel RX DATA LED is lit whenever CI Channel RX DATA
from the customer equipment is spacing. The color of this LED is
green.
CI Chan RTS The CI Channel RTS (Request to Send) LED is lit whenever CI Channel
RTS from the customer equipment is spacing. The color of this LED is
green.
CI Chan CTS The CI Channel CTS (Clear to Send) LED is lit whenever CI Channel
CTS to the customer equipment is spacing. The color of this LED is
green.