• Pentaband UMTS with the frequency bands 800/850/1700/1900/2100 MHz
• Quad-band GSM with the frequency bands 850/900/1800/1900 MHz
• Support for UMTS with HSDPA+ (downlink: 14.4 Mbit/s, uplink: 5.76 Mbit/s)
• Without UMTS network, automatic switchover to 2nd generation mobile radio data services, eGPRS or GPRS mode
• Automatic setup and holding of IP-based online connection to the Internet
• Merging of distributed, IP-based networks via UMTS/GSM mobile radio networks
• Bi-directional IP-based data communication with the telecontrol center, e.g. ST7cc or ST7sc, WinCC or PCS 7
• Integrated security functions with firewall (stateful inspection)
• Integrated IPsec VPN tunnel encryption
• Data exchange between telecontrol stations (slave-slave communication) via a TIM communication module in the service center
• Secure data communication with the SINAUT ST7 stations, also over mobile radio provider networks which do not provide public and fixed IP addresses for the modem
• Automatic and user-defined sending of text messages

Configuration

• User-friendly configuration of all network and firewall parameters of the router using the web browser

Security

• Router for data transmission via public networks with NAT functionality (NAT Traversal, NAPT, 1:1-NAT)
• Suitable VPN termination of the control center via SCALANCE S
• Firewall for protection against unauthorized access; the dynamic packet filter checks data packets based on the source and target address (stateful inspection) and blocks undesirable data traffic (anti-spoofing)

Diagnostics / maintenance

• Status of connection buildup and of an existing connection via front LED display and web browser

Preconditions for using the SCALANCE M875 UMTS router

• SIM card from a UMTS network operator with HSDPA support, or alternatively a SIM card from a GSM network operator with eGPRS or GPRS support