SHRM-08-s ATM modem card

SHRM-08-s ATM modem card

Modem card for 4-wire applications incl. 1 port Ethernet 10/100Base Tx
Complies with security features according toDIN270001 + VPN encryption
64kbit/s up to 30.6 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
WAN connection: screw/plug-in terminals Alternative RJ-45 socket

With the SHRM-08-s Ethernet card, high transmission speeds of up to 15.3 / 30.6 Mbit/s can be achieved via existing unshielded, twisted 2- or 4-wire copper cable for direct Ethernet network coupling. The modem card automatically or manually adapts its transmission speed to the quality of the line, thus enabling trouble-free operation.

When the secure mode is switched on, stable data transmission is guaranteed even on bad lines. The transmission distance and speed depends on the line cross-section, the number of parallel G.SHDSL lines and possible disturbance variables (bandwidth adaptation).

The SHRM-08s can be operated in a bus circuit, which means that in 2-wire applications only one module is required for 2 external modems. Transmission and data security are the important features of the SHDTU family. The requirements of DIN-27001, such as: port-based o.Tagged-VLAN, management in own VLAN, secured access via HTTPS & SSH, password protection, SNMP v3, shutdown of unused ports, port-based MAC-o. IP-filter, syslog and time synchronization are fulfilled. The route can be secured by VPN encryption and the modems can be used as full-fledged routers with firewall.

Special emphasis was 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 device status. All configurations can be saved to external media and retrieved again.
The SHDTU modems are used in applications where a high degree of transmission security and reliability is required, such as in utility areas (electricity,water, gas, district heating, traffic, etc.) these modems are suitable for use in harsh environments.

The modems are also available in DIN rail housing or as desktop devices. The SHDTU modems support all standard technologies and are compatible to all ATM/EFM based G.SHDSL router/bridge systems.


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/fast mode for stable/fast transmission
Long range up to 25 km
Complies with UL1950, FCC 15 ClassB, EN55022 & 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 / 4 wire operation (adjustable)
Standard ITU-T G.991.2 & 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: 26 x 2x 17.8 cm (DxWxH)
19 inch modem module
WAN: screw/plug-in terminal alternatively RJ-45 socket
LAN: 1 x RJ-45 10/100BaseTx
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 messages via e-mail
Firmware upgrade via web browser and TFP 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.

Filter Products

Reset all filters
  • Accessories

    • Antennas
    • Surge Protection
  • Housing

  • Technology

  • Type

    • Conference-Router
    • Converter
    • Managed Switch
    • Media Converter
    • Router
    • SFP
    • Software -Solutions
    • Switch