LANCOM 1783VA-4G (ADSL over ISDN, Annex B)
Business VoIP & VPN router for professional telephony and high-speed Internet
via VDSL2 / ADSL2+ (over ISDN) or 4G
The LANCOM 1783VA-4G is the ideal device for professional telephony and high-speed
Internet. With its integrated LANCOM All-IP Option, 2 ISDN interfaces (1 x TE /
NT and 1 x NT) and 2 analog interfaces, this device is the ideal solution for
analog, ISDN, and VoIP telephony at locations with an All-IP connection -
without the need to replace existing components. The router also offers secure
site connectivity via IPSec VPN along with high-speed Internet via VDSL2 /
ADSL2+ or 4G - ideal for backup scenarios in business-critical applications.
- Integrated ISDN-analog gateway for the continued operation of existing
- ISDN and analog components after converting to All-IP
- Professional telephony functions with the integrated LANCOM VCM (Voice Call
- Flexible professional router for high-speed Internet access thanks to the
- VDSL2 and ADSL2+ modem and LTE/4G modem
- 2x ISDN S0 (TE/NT + NT) for point-to-point or multipoint line configuration
- 2x analog (internal) / fax
- Up to 4 simultaneous ISDN voice channels
- 5 IPSec VPN channels (25 optional) for professional and secure site
Continued use of existing ISDN and analog components
The LANCOM 1783VA-4G translates between ISDN, analog, and VoIP. Along with the
latest VoIP equipment, you can continue to operate your existing ISDN and analog
components without having to replace them. Even after switching to the new All-IP
connection, this cost-saving solution conveniently and professionally integrates
your ISDN and analog network components. It is also possible to operate a
combination of analog, ISDN, and VoIP PBX devices directly at the LANCOM router.
Professional telephony with the LANCOM VCM (Voice Call Manager)
The LANCOM Voice Call Manager is already integrated into the LANCOM 1783VA-4G
and provides advanced telephony support. It handles the telephony management and
controls all of the PBX components and functions of the router.
High-speed Internet access
The LANCOM 1783VA-4G is a professional, high-performance VPN router for high-speed
Internet access with its integrated VDSL2/ADSL2+ modem. Thus it offers maximum
flexibility for the transition from ADSL to the high-speed Internet with VDSL -
thanks to VDSL2 Vectoring support offering up to 100 Mbps. Ideal for business-critical
applications: The additional LTE/4G modem for high-speed cellular networking at
up to 100 Mbps is ideal for intelligent backup scenarios as an alternative to
wired Internet connections.
Gigabit speed performance
With a high-performance hardware platform that offers ample storage capacity,
high-speed interfaces, and hardware VPN encryption, the LANCOM 1783VA-4G
guarantees maximum network performance even under high loads. Thanks to hardware
NAT, the device offers true Gigabit performance for IP packet transmissions.
Professional VPN solution
VPN solutions from LANCOM offer flexible, economical and secure networking of
headquarters, subsidiaries, branches, sites, and home-office workplaces in small,
mid-sized and large enterprises. The LANCOM 1783VA-4G supports up to 5
simultaneous IPsec VPN channels, with optional upgrades for 25 channels.
12 V DC, external power adapter (230V); bayonet connector to secure against
Max. ca. 14 W
0–40°C, humidity 0–95%; non-condensing
Robust synthetic housing, rear connectors, ready for wall mounting, Kensington
210 x 45 x 140 mm (W x H x D)
Number of fans
None; fanless design, no rotating parts, high MTB
- VDSL2 as per ITU G.993.2; profiles 8a, 8b, 8c, 8d, 12a, 12b, 17a
- Compatible to VDSL2 from Deutsche Telekom
- ADSL conformity according to: ADSL2+ over ISDN as per ITU G.992.5 Annex
B/J with DPBO,ADSL2 over ISDN as per ITU G.992.3 Annex B, ADSL over ISDN as per
ITU G.992.1 AnnexB.
- Supports just one virtual connection at a time in ATM (VPI-VCI pair)
-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 configuration.
-USB 2.0 hi-speed host port for connecting USB printers (USB print server),
serial devices (COM-port server) or USB drives (FAT file system).
ISDN 1 / ISDN 2
-ISDN 1:Internal (NT) or external (TE) ISDN bus. This feature is controlled by
LCOS. According to the settings, connect the light-blue ISDN cable either to the
NTBA or the ISDN terminal device.
-ISDN 2: Internal (NT) ISDN bus. Use the light-blue ISDN cable to connect the
ISDN device to the ISDN interface;
Analog 1 / Analog 2
-Use the cable of your analog devices to connect them with the analog
interfaces. If necessary,use the enclosed adapter.
Config (Com) / V.24
-Serial configuration interface/COM-port (8-pin mini-DIN): 9,600 - 115,200 baud,
suitable for optional connection of analog/GPRS modems. Supports internal COM-port
server and provides transparent asynchronous serial-data transfer via TCP.
-4G: Ant1, Ant2
2x dipole anntena
-VDSL, ADSL, Ethernet
PPPoE, PPPoA, IPoA, Multi-PPPoE, ML-PPP, PPTP (PAC or PNS) and IPoE (with or
without DHCP), RIP-1, RIP-2, VLAN
DSS1 (Euro- ISDN), PPP, X75, HDLC, ML-PPP, V.110/GSM/HSCSD