LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN
Chapter 2: Installation
26
EN
ISDN status
Status of ISDN S
0
connection:
If the ISDN status LED goes out automatically, this does not indicate
an S
0
bus error. Many ISDN connections and PBXs put the S
0
bus into
a power-save mode after a certain time. The S
0
bus is automatically
reactivated as required, and the ISDN status LED will once again light
up green.
ISDN Chan 1
ISDN Chan 2
(only LANCOM 821
ADSL/ISDN and
LANCOM 1621
ADSL/ISDN)
ISDN Data
(only LANCOM
1711 VPN)
(Separate) status display for both ISDN B channels:
LAN 1
LAN 2
LAN 3
LAN 4
Status of the four LAN ports in the integrated switch:
off
Not connected or no S
0
voltage (no error message)
green
blinking
Initializing D-channel (establishing contact with the connec-
tion point)
green
constantly on
D channel ready for use
red
blinking
Error (CRC error, framing error, etc.)
red
constantly on
Activation of D-channel failed
off
No connection established
green
blinking
Dialling
green
flashing
Establishing first connection
green
flashing
Establishing further connection
green
constantly on
Connection established via B channel
green
flickering
Data traffic (send or receive)
off
No network device connected
green
constantly on
Connection to network device operational, no data traffic
green
flickering
Data traffic
red
flickering
Collision of packets