Nortel Networks Passport 4400 - Manual (Page 116)

Indicators Passport 4400 Hardware Installation Manual
11-6
Analog Voice Module and Universal Analog Voice Module
There are a total of six indicators associated with each voice/fax channel of both
the Analog Voice Module and the Universal Analog Voice Module. The following
figure shows and describes the functions of the indicators during normal
operation.
Note: During network code download, each red indicator is turned on
and off sequentially for 1 second.
Figure 11-5. Analog Voice Module Indicators
Table 11-7. Description of Analog Voice Module Indicators
Indicator State Status
OK On Channel is in normal operating mode.
Flashing Channel is in fax mode.
Off Channel is inoperative.l
LO On E&M or FXS – channel is off-hook.
FXO outgoing call – second dial tone is heard.
FXO incoming call – call is answered.
Flashing Channel is in busyout state.
RO On Remote channel is attempting to contact local channel.
LS On Voice/fax traffic is flowing to remote end.
RS On Voice/fax traffic is obtained from remote end.
TM Always off
OK LO RO LS RS TM