Paradyne 7510 DSU - Manual (Page 30)

Monitoring the DSU
4-9 7510-A2-GB20-10 November 1997
System LEDs
496-15062
CTS (106) OK ALARM TEST DM OOS OOF NS TXD (103)RXD (104)R
TS (105)
DTR (108)
Network System Port
red green yellow
OK:
ON – DSU is operational.
OFF – DSU is performing a power-up self-test, has detected a system
failure, or there is no power.
ALARM:
ON – DSU has detected an alarm condition locally or from
the network. Refer to Troubleshooting in Chapter 6.
TEST:
ON – Test in progress. Test can be initiated locally, remotely,
or from the network. Includes power-up self-test.