Hardware Manual

MAX1000 System
48 Telephony Hardware Manual
T1E1 Signal Status LEDs
The ALTI-M0404-T1E1 board has two LEDs to show the T1/E1 signal status. The green
LED is labeled "C" and the red LED is labeled "D".
OFF
One of the following is true:
• The embedded DSP board is not running.
• Access board is not connected to DSP board properly.
• DSP board is too busy. Voice signal may be impacted.
LED B Status
ON
The telephony power supply on the DSP
board is supplying
telephony power to the analog extension ports properly.
Normal operation is ON.
OFF
One of the following is true:
• Switching software is not running.
• The telephony power supply fails to supply power.
LED C
(Green)
LED D
(Red) Status
ON OFF Normal operation
OFF ON No signal
On Flashing
Frame synchronization is okay, but one of the following
errors has
occurred:
• Bi-polar violation
• Line code violation
• System is receiving Yellow alarm from CO
• System is receiving Red alarm from CO
• Excessive zeros detected.
LED A Status