Paradyne 7520, Руководство пользователя, Страница: 34 / 76

Monitoring the DSU
4-10
7520-A2-GB20-20 May 1998
Network 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
DM – Data Mode:
ON – DSU (DDS network interface) is sending or
receiving data, or is in DMI condition
(all 1s being received).
OFF – DDS network interface is receiving CMI codes.
OOS – Out of Service:
ON – DSU is receiving out of
service code from the remote unit.
Refer to Table 4-2,
Health and Status
Messages .
OOF – Out of Frame:
ON – DSU is detecting an out of frame
condition. Refer to Table 4-2, Health
and Status Messages .
NS – No Signal:
ON – DDS network interface detects
no signal. Refer to Table 4-2,
Health and Status Messages .