LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
19
EN
If the ISDN status LED goes off automatically, this does not indicate
an error at the S
0
bus. It is in fact because several ISDN connections
and PBXs switch the S
0
bus into power-saving mode after a certain
period of inactivity. When needed, the S
0
bus automatically reacti-
vates and the ISDN status LED illuminates in green.
ISDN Data
Status display for both ISDN B channels:
ETH
LAN connector status in the integrated switch:
VPN
Status of a VPN connection.
2.3.2 Device connectors
The connections and switches of the router are located on the back panel:
off No connection established
green Blinking Dialling
green Flashing Establishing first connection
green Inverse flashing Establishing further connection
green Constantly on Connection established via B channel
green Flickering Data traffic (send or receive)
Off No networking device attached
Green On (perma-
nently)
Connection to network device operational, not data traffic
Green Flickering Data traffic
Red Flickering Data packet collision
Off No VPN tunnel established
Green Blinking Connection establishment
Green Flashing First connection
Green Inverse flashing Other connections
Green On (perma-
nently)
VPN tunnels are established
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