ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 171)

7. Product Specification
MSAP2000 Technical Manual V3.0 7-64
LUNT Panel View
LED Status Description
ACTV (Green) Green: Functioning normally
OFF: CPU, or Power failure
FAIL (Red) ON: CPU, or auto-detection failure
OFF: Functioning normally
CH1 (Green) ON: Voice transmission in progress
in Channel 1
TWINKLE: Loop testing in progress
OFF: Channel is unoccupied
CH2 (Green)
CH3 (Green)
CH4 (Green) ON: Voice transmission in progress
in Channel 2
TWINKLE: Loop testing in progress
OFF: Channel is unoccupied
ON: Voice transmission in progress
in Channel 3
TWINKLE: Loop testing in progress
OFF: Channel is unoccupied
ON: Voice transmission in progress
in Channel 4
TWINKLE: Loop testing in progress
OFF: Channel is unoccupied