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IndicatorsPassport 4400 Hardware Installation Manual
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T1/E1 Voice Module
There are 13 indicators associated with the T1/E1 Voice Module -- six for the
Digital Voice channels, and seven for the Voice Module.
Figure 11-3. T1/E1 Access Module Indicators
Digital Voice Channel Status Indicators
Indicators 1 through 6 represent, respectively, the status of the digital voice
channels B1 through B6, as follows:
Table 11-2. Digital Voice Channel Status Indicators
State Status
Off Digital Voice Module not installed or defective, or power is off
Green Digital voice channel is connected, and active voice call is in progress
Flashing green Test in progress
Quick-flashing green Download in progress
Amber Idle (both ends on-hook)
Flashing amber Fax call in progress
Red Waiting for code download
Flashing red Busy
Quick-flashing red Alarm/Test Failure
Digital Voice Channel
Status Indicators
654 3 21
T1/E1 Status
Indicators
D2 D1 DT DA XT XA AT
D2 D1 2T 2A 1T 1A AT
T1:
E1: