Nortel Networks Passport ARN Routers - Manual (Page 80)

Installing and Operating Passport ARN Routers
3-8 114200-E Rev 00
FT1/T1 and FE1/E1 DSU/CSU LEDs
Table 3-12 describes the FT1/T1 and FE1/E1 DSU/CSU adapter module LEDs.
X.25 PAD LEDs
Table 3-13 describes the X.25 PAD adapter module LEDs.
V.34 Modem LEDs
Table 3-14 describes the front-panel V.34 modem adapter module LEDs.
Table 3-12. FT1/T1 and FE1/E1 DSU/CSU LEDs
LED Meaning
Red ALM Lights when the port is in a red alarm state.
Yellow ALM Lights when the DSU/CSU receives a yellow alarm signal
from the network.
Loop Lights when you set the interface to loopback mode.
Synch Lights when the port is synchronized with the T1/E1 network.
Table 3-13. X.25 PAD LEDs
LED Meaning
TxD
(Transmit Data) Lights when the X.25 PAD interface transmits data over the
network.
RxD
(Receive Data) Lights when the X.25 PAD interface receives data from the
network.
Note: The ARN back-panel supports an optional V.34 Console Modem
module. Table 3-14 also applies to these LEDs.