ISDN
ETH 4
ETH 3
VPN
a d e f gc
b b
LANCOM, LANCOM Systems and LCOS are registeredtrademarks. All other names or descriptions used may be trademarks or registered
trademarks of their owners. Subject to change without notice. No liability for technical errors and/or omissions. 111723/1117
Serial interface
You can connect the
device to a PC with a
conguration cable
(available separately).
Ethernet interface
Use the cable with the
kiwi-colored connectors
to connect one of the
interfaces ETH 1 to
ETH 4 to your PC or a
LAN switch.
Please observe the
following when setting
up the device
aFor devices to be
operated on the
desktop, please attach
the adhesive rubber
footpads
aDo not rest any objects
on top of the device
aKeep the ventilation
slots on the side of
the device clear of
obstruction
aIn case of wall
mounting, use the
drilling template as
supplied
aRack installation with
the optional LANCOM
Rack Mount (not
supplied)
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.
Hardware
Power supply 12 V DC, external power adapter (230 V) with bayonet connector to secure against disconnection
Power consumption Max. ca.12.5 W
Environment Temperature range 5 – 40 °C; humidity 0 – 95 %; non-condensing
Housing Robust synthetic housing, rear connectors, ready for wall mounting, Kensington lock;
measures 210 x 45 x 140 mm (W x H x D)
Number of fans None; fanless design, no rotating parts, high MTBF
Data transmission in cellular networks
Supported standards: LTE, HSPA+, HSxPA, UMTS, EDGE, GPRS
LTE bands Band 1 (2100 MHz), band 3 (1800 MHz), band 7 (2600 MHz), band 8 (900 MHz), band 20 (DD800
MHz) with MIMO
UMTS-/HSxPA-/HSPA+
bands
Band 1 (2100 MHz), band 8 (900 MHz) with diversity
EDGE-/GPRS bands GSM 900 (900 MHz), DCS 1800 (1800 MHz), PCS 1900 (1900 MHz)
Maximum transmission
power
+24 dBm
Interfaces
ETH 4 individual ports, 10 / 100 / 1000 Mbps Gigabit Ethernet, by default set to switch mode. Up to 3
ports can be operated as additional WAN ports. Ethernet ports can be electrically disabled in the LCOS
conguration. The ports support the energy-efcient features as per IEEE 802.3az
USB USB 2.0 Hi-Speed host port for connecting USB printers (USB print server), serial devices (COM-port
servers), USB data media (FAT le system)
ISDN-S0 ISDN-S0bus
Serial Interface Serial conguration interface / COM port (8-pin Mini-DIN):
9,600 - 115,000 baud, suitable for optional connection of analog / GPRS modems.
Ant 1, Ant 2 Two SMA connectors for the supplied dipole rod antennas (LTE, UMTS, Edge), compatible LANCOM
AirLancer Extender antennas for 4G or 3G, or from other manufacturers. Please respect the restrictions
which apply in your country when setting up an antenna system (in particular the antenna gain and
transmission power).
GPS SMA jack for connecting an optionally available GPS antenna
WAN protocols
Ethernet PPPoE, Multi-PPPoE, ML-PPP, PPTP (PAC or PNS) and IPoE (with or without DHCP), RIP-1, RIP-2, VLAN,
GRE, L2TPv2 (LAC or LNS), IPv6 over PPP (IPv6 and IPv4/IPv6 dual stack session),
IP(v6)oE (autoconguration, DHCPv6 or static)
ISDN 1TR6, DSS1 (Euro-ISDN), PPP, X75, HDLC, ML-PPP, V.110 / GSM / HSCSD
Declaration of conformity
Hereby, LANCOM Systems declares that this radio equipment is in compliance with Directive 2014/53/EU. The full text of the EU
declaration of conformity is available at the following internet address: www.lancom-systems.com/ce/
Package content
Manual Quick Reference Guide (DE/EN), Installation Guide (DE/EN)
Cable Ethernet cable, 3 m (kiwi-colored connectors), ISDN cable, 3 m (light-blue connectors)
Antennas Two LTE- / 4G antennas for LTE / UMTS / EDGE
Power adapter External power supply adapter (230V), NEST 12 V / 1.5 A DC/S, barrel connector 2.1 / 5.5 mm
bayonet, LANCOM item no. 111301 (EU, 230 V); LANCOM item no. 111302 (UK, 230 V)
a Power
Off Device switched off
Green, permanently* Device operational, resp. device paired / claimed
and LANCOM Management Cloud (LMC)
accessible
Green / orange, blinking Conguration password not set. Without a
conguration password, the conguration data
in the device is unprotected.
Red, blinking Charge or time limit reached
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
b Online
Off WAN connection inactive
Green, permanently WAN connection active
Red, permanently WAN connection error
g VPN
Off No VPN connection active
Green, permanently VPN connection active
Green, blinking Establishing VPN connections
f ETH
Off No networking device attached
Green, permanently Connection to network device operational, no
data trafc
Green, ickering Data transmission
e ISDN
Off interface deactivated
Green, permanently D-channel active
Orange, permanently B-channel active
Green, ickering ISDN data transmission
Red, ickering ISDN transmission error
Red / orange, blinking ISDN hardware error
USB interface
You can use the USB
interface to connect a
USB printer or a USB
ash drive for device
conguration.
LTE- / 4G antennas or
optional: GPS antenna
Screw the two supplied
cellular antennas onto
the connectors Ant 1 and
Ant 2.
Alternatively screw the
freely available GPS
antenna onto the
connector GPS.
(see included voucher).
SIM card
Slide the SIM card into the slot
using the marker to ensure that
the card is the right way round.
Ensure that the SIM card clicks
into place on insertion.
To remove the card from the
device, press the card slightly
into the device. Let go to release
the SIM card from the slot.
d Signal
Off No cellular reception
Orange, blinking Low signal strength,
eld strength less than -87 dB
Orange, permanently Medium signal strength,
eld strength -86 – -71 dB
Green, permanently Good signal strength, greater than or equal to
-70 dB
c 4G
Off Cellular interface disabled
Red / orange, blinking Uploading module rmware
Red / green, blinking SIM card error (PIN)
Orange, blinking Logging on to cellular network
Orange, permanently Logon to cellular network successful
Green, permanently Connection to cellular network active
Green, ickering Cellular data transmission
Red, permanently Hardware error / module unavailable
Quick Reference Guide
LANCOM 1781-4G
Antennas are only to be attached or changed when the device is switched off. Mounting or
demounting antennas while the device switched on may cause the destruction of the 4G
module!
The SIM may only be inserted or removed with the device switched off.
Inserting or removing the SIM card while the device is switched on could
destroy the 4G module!
