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LANCOM 1722 VoIP – LANCOM 1724 VoIP
Chapter 2: Installation
red
red
orange
orange
red/
orange
¿
Connection status of first and second ISDN interface:
ISDN
off
green
green
orange
orange
orange
red
red
red/
orange
44
flickering
Error (CRC error, Framing error etc.)
constantly on
Synchronisation not succsesful, searching peer
constantly on
Synchronisation succsesful
blinking/flash-
Handshake/training phase
ing
blinking
Hardware error
TE Mode
(external ISDN
connection)
Interface switched off or
Layer 1 deactivated or no
Layer 2 TEI
blinking
Establishing D channel Layer 1 or Layer 2 TEI
constantly on
D channel activated (Layer 1
aktive and Layer 2 TEI avail-
able)
blinkend
Establishing first ISDN connection
blitzend
Establishing of further ISDN connections
invers flickering
Data traffic (send)
blinking
Error on B channel
constantly on
Establishing D channel Layer
1 or Layer 2stopped due to
error
blinking
ISDN hardware errot
If the LED of an ISDN interface automatically goes off in TE mode, this
does not indicate an error at the S
ISDN connections and PBXs switch the S
mode after a certain period of inactivity. When needed, the S
automatically reactivates and the ISDN status LED illuminates green.
NT Mode
(internal ISDN
connection)
Interface switched off.
When switched off, the line
may, under certain circum-
stances, still be connected to
another ISDN interface via a
life-line relay
(→
D channel activated
Establishing D channel Layer
1 stopped due to error
bus. It is in fact because several
0
bus into power-saving
0
Seite 49).
bus
0
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