SHDTU-08-is-SFP G.SHDSL-ethernet modem with LWL

SHDTU-08-is-SFP G.SHDSL-ethernet modem with LWL

Ethernet G.SHDSL modem/router
with 2x fiber optics (SFP) and 2x RJ-45 Ethernet 10/100BaseTx
Fulfills the security features according to DIN27001 + VPN encryption
Transmission speed from 64 Kbit/s up to 15.3 Mbit/s per copper wire pair
Range up to 25 km
Special mode for transmission under difficult line conditions
ATM & EFM transmission
Configuration via HTTPS/CLI/SSH
SNMP management and alarm contacts
Redundant power supply: 2x 12-60VDC (+/-20%)
Temperature range: -20 – +70°C

With the SHDTU-08-is-SFP Ethernet modem, copper and fiber optic networks can be combined via one device. The modems have two fiber, two copper and two G.SHDSL ports. Flexible SFP modules are used for the fiber optic interface, which can bridge up to 120 km at a speed of 100 Mbit/s via multimode or single mode fibers. Ethernet nodes can be connected via copper using two additional 10/100 Mbit/s RJ-45 ports, and G.SHDSL transmission technology allows Ethernet networks to be connected over existing 2-wire or 4-wire copper lines over distances of up to 25 km. On paired copper lines, speeds of 64 Kbit/s up to 15.3 Mbit/s per twisted pair are achieved, and with the bonding of two pairs, the speed can be doubled to 30.6 Mbit/s.

This makes the SHDTU-08-is-SFP suitable for migration to fiber optic networks. They can be integrated into existing fiber optic infrastructures without the need for additional media converters, or they can be connected initially via copper and then at a later date via fiber optics. On the G.SHDSL side, the modems automatically or manually adapt their speed to the quality of the copper line and offer interference-free operation. They support topologies such as point-to-point or multipoint operation, line, bus and ring structures. When secure mode is enabled, stable data transmission is guaranteed even with poor lines.

Transmission and data security are the important features of the SHDTU family. The requirements of DIN-27001, such as: port-based or tagged VLAN, management in own VLAN, secure access via HTTPS & SSH, password protection, SNMP v3, shutdown of unused ports, port-based MAC or IP filters, syslog and time synchronization are met. The route can be secured via VPN encryption and the modems can be used as full-fledged routers with firewall. Much emphasis has been placed on the user-friendly operation of the modems. All settings for standard operation can be made via the browser using HTTP/HTTPS on one page. The status page provides information about the quality of the line and possible errors on the device. The modem can be quickly set up via the CLI interface. All configurations can be saved to external media and retrieved again.

The SHDTU modems are often used in applications where a high level of transmission security and reliability is required, such as in utility sectors like electricity, water, gas, district heating, traffic, etc. The robust design of the modems with metal housing, DIN rail mounting, extended temperature range and redundant supply voltage of 12 – 72 VDC make them suitable for use in harsh environments.
Central 19″ solutions are available. The SHDTU modems support all standard technologies and are compatible to all ATM/EFM based G.SHDSL router/bridge systems.

SFP modules for this device can be found here: SFP modules

We recommend the use of our surge protection DSL-FLÜ


Symmetrical transmission speed up to 30.6 Mbit/s (4-wire mode / 15.3 Mbit/s per pair)
Automatic speed adaptation to line quality or fixed speeds
Pre-configured for plug-and-play operation in point-to-point applications
Secure or Fast mode for stable or high-speed transmission
Long ranges up to 25 km
Complies with UL1950, FCC 15 ClassB, EN55022 and EN60950

Security features

VPN encryption WAN
– IPSec (RFC2411) up to 4 tunnels
– MD5/SHA-1 and IKE/Manual Key
– ISAKMP (RFC 2407/2408/4306) and IKE v1 (RFC 2409/4109)
Ring redundancy
IP and MAC filtering per port
Disable unused LAN ports
Disable WEB interface
Management in own VLAN


2 or 4-wire operation (adjustable)
Standard ITU-T G.991.2 and ITU-T G.994.1 (G.hs)
Point-to-point, star, line and ring operation
Multi-link mode
Line coding: TC-PAM-4 to 128
Compatible with ATM and EFM based G.SHDSL modems from other vendors


IEEE 802.1D transparent bridging
Port-based & IEEE 802.1Q VLAN
– Management VLAN ID
– QinQ
– 4-port switch
L2 QoS (CoS)


Dimensions: 13.5 x 4 x 17.7 cm (DxWxH)
DIN rail mounting
Redundant voltage: 2 x 12-72VDC (+/-20%)
Power: approx. 5,5 Watt
Temperature: -20 to +70°C (operation)
Humidity: 0-95
WAN: 1x screw/plug-in terminal block
LAN: 2x RJ-45 switch 10/100 BaseTx
2x SFP fiber port
Speed: 100 FX
LC connector
Multimode: 2km
Singlemode: 20,40,80 or 120 km
CLI console port / RS-232 : RJ-45


Dynamic routing via OSPF and RIP
IGMP proxy/ snooping


Simple user interface for quick installation, configuration and control via web browser (HTTP/HTTPS)
Menu-driven interface/ command line interface (CLI) for local console and Telnet/SSH access management
Password protected management and access control for administration
SNMP monitoring and TRAP dispatch with SNMPv1, SNMPv2 and SNMPv3 agent (RFC1157/1901/1905) and MIB II(RFC1213/1493)
Alarm contacts for voltage and WAN failure, alarm contacts via Web GUI configurable for CRC error, LAN port monitoring, line quality monitoring
Alarm messages via e-mail
Firmware upgrade via web browser and FTP server
Saving of config files
Time synchronization

The transmission of my personal data is voluntary. I have the opportunity to withdraw my data at any time. My data is stored exclusively for the purpose of processing my request. A passing on to third does not take place.

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