Cable1 Ethernet cable, 3 m (kiwi colored connectors)
Antennas2 LTE / 4G antennas
Power adapterExternal power adapter, NEST 12 V / 2 A DC/S, barrel connector 2.1 / 5.5 mm bayonet,
LANCOM item no. 111303 (not for WW devices)
This product contains separate open-source software components which are subject to their own licenses, in particular
the General Public License (GPL). The license information for the device rmware (LCOS) is available on the device‘s
WEBcong interface under “Extras > License information“. If the respective license demands, the source les for the
corresponding software components will be made available on a download server upon request.
fVPN
OffVPN connection inactive
Green, permanentlyVPN connection active
Green, ashingVPN connecting
bOnline
OffWAN connection inactive
Green, permanentlyWAN connection active
Red, permanentlyWAN connection error
dETH
OffNo networking device attached
Green, permanentlyConnection to network device operational,
no data trafc
Green, ickeringData transmission
e4G
OffCellular interface disabled
Green, permanentlyConnection to cellular network active
Green, ickeringCellular data transfer
Orange, permanentlyLogon to cellular network successful
Orange, blinkingLogging on to cellular network
Red, permanentlyHardware error/module unavailable
Red / green, blinkingSIM card error (PIN)
Red / orange, blinkingUploading module rmware
fReset
Reset buttonOperated e.g. with a paper clip
ashort press: Restart the device
along press: Reset the device
LANCOM 1790-4G
Quick Reference Guide
4
Please observe the following when setting up the device
A Do not rest any objects on top of the device
A For devices to be operated on the desktop, please attach the
adhesive rubber footpads
AIn case of wall mounting, use the drilling template as supplied
AKeep the ventilation slots on the side of the device clear
of obstruction
ARack installation with the optional LANCOM Rack Mount
(separately available)
LANCOM 1681V
Power
VDSL
Online
ETH 1
ETH 2
VPN
ETH 3
ETH 4
ISDN Status
a
LTE / 4G antennas
Connect the two supplied cellular antennas to the connectors
Ant 1 and Ant 2.
b
WAN interface
Connect the WAN interface to your WAN modem using the
enclosed ethernet cable with the dark green connectors.
c
Ethernet interfaces
Use the cable with the green-colored connectors to connect one of
the interfaces ETH 1 to ETH 3 to your PC or a LAN switch.
d
Conguration interface
Conguring the device via the serial interface requires a serial
conguration cable (available as an accessory).
e
Power
After connecting the cable to the device, turn the bayonet
connector 90° clockwise until it clicks into place.
Use only the supplied power adapter.
f
SIM card slot (bottom side of the device)
Release the SIM-card holder and lever it upwards. Slide the SIM
card into the guide slot of the SIM-card holder. Press the holder
down until it clicks into place.
SIM
LANCOM 1790-4G
WAN
ETH 2
Power
ETH 1
Online
ETH 3
VPN
4G
Cloud-ready
cWAN
OffInterface deactivated
Orange, blinkingSynchronization with the modem
Orange, permanentlySynchronization with the modem
successful
Green, permanentlyWAN connection established
Green, ickeringWAN data transmission
Red / orange, blinkingHardware error, ext. modem
*) The additional power LED statuses are displayed in 5-seconds
rotation if the device is congured to be managed by the LANCOM
Management Cloud.
aPower
OffDevice switched off
Green, permanently*Device operational,
resp. device paired / claimed and LANCOM
Management Cloud (LMC) accessible
Red / green, blinkingConguration password not set. Without a
conguration password, the conguration
data in the device is unprotected.
Red, blinkingHardware error
Red, blinking slowlyTime or charge limit reached/error message
occurred
1x green inverse
blinking*
Connection to the LMC active, pairing OK,
device not claimed
2x green inverse
blinking*
Pairing error, resp. LMC activation code
not available
3x green inverse
blinking*
LMC not accessible, resp. communication
error
acebfdf
bcdae
f
a
SIM
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