Device Connectors - Lancom 821+ Manual


º
ISDN Data Status display for both ISDN B channels:
off
green
green
green
green
green
¾
LAN connector status in the integrated switch:
ETH
Off
Green
Green
Red
µ
VPN Status of a VPN connection.
Off
Green
Green
Green
Green
2.3.2

Device connectors

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