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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)
²
ISDN Data
(only LANCOM
1711 VPN)
²
(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