Lancom Systems 821 Benutzerhandbuch

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

26

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