LANCOM 1751 UMTS
Chapter 2: Installation
20
EN
ADSL data
Information on data traffic at the ADSL connector:
ISDN status
Information on connection status at the ISDN S
0
connector:
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 reactiva-
tes and the ISDN status LED illuminates in green.
ISDN Data
Status display for both ISDN B channels:
Off
No logical connection
Green
Blinking
Opening the first connection
Green
Inverse flashing
Opening an additional connection
Green
Permanently
At least one logical connection is established
Green
Inverse flickering
Data traffic (send or receive)
Off
Not connected or no S
0
voltage (no error message)
Green
Blinking
D-channel initialization (establishing contact to provider)
Green
On (perma-
nently)
D-channel operational
Red
Flickering
D-channel error
Red
On (perma-
nently)
D-channel activation failed
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)
110584_LC-1751-UMTS-MANUAL-EN.book Page 20 Tuesday, February 26, 2008 5:16 PM