ISDN connections 〉 Installation of the ISDN Cards 〉 Preparation of the SX2 DualPRI 〉 LED Status Display
 
LED Status Display
Each E1 connection of the SX2 DualPRI V2 has a status display consisting of two red and two green LEDs.
The following assignments are valid:
LED
LED
Statement
1
off
Layer 1 deactivated
1
red glowing
Layer 1 activated
2
green glowing
Layer 2 activated
3
green, blinking
At least one connection is active
4
red, blinking
The line is being configured