CDMA New mobile Network for utilities

Code Division Multiple Access (CDMA) refers to a mobile standard used primarily in America and parts of Asia and Africa for the operation of mobile networks.

The frequency of 1800 MHz used by CDMA collides in Germany with the GSM and LTE radio. However, the frequency range around 450 MHz has become available since the old C network was shut down at the end of 2000 and is marketed under the name CDMA 450 MHz.

Compared to other wireless networks, the 450MHz technology offers greater range and significantly better building penetration. Remote areas and otherwise hard-to-reach areas can be safely and reliably reached by radio. Also, 450MHz wireless networks require significantly fewer transmitters and thus lower costs for the construction and operation of the radio network.

Initially, the CDMA 450 MHz focuses on the energy industry, which as a result of the energy transition has high requirements for a secure and reliable communication solution and has to implement a large number of applications. These are e.g. Reading of smart meters, connection of intelligent measuring systems, non-crash safe operation management, control and monitoring of the energy network, replacement of ripple control technology, control of disconnectable loads, feed-in control of renewable energies, control of charging and discharging local storage, connection of charging stations for electromobility, connection of street lighting, Information technology connection of local, low and medium voltage stations as well as crisis and emergency communication.

DigiComm has extended its current DSR-200 router series with the CDMA-450 MHz interface, enabling transmission in CDMA networks.

The DSR-200 meets all the needs of the market and meets the data and transmission security requirements of DIN-27001 for critical infrastructures.

Network Connection

LTE with up to 100 Mbit / s

With LTE, you can achieve higher speeds and benefit from better network coverage, especially in rural areas.

All routers are backwards compatible in the mobile radio standard. Thus, the 4G / LTE variant also supports 3G (HSPA +, HSUPA, HSDPA, UMTS) and 2G (EDGE, GPRS, GSM). If the network with the highest standard is not available or the reception is too weak, the system automatically switches to the next best network.

Dual-SIM

The devices can be operated with two SIM cards. This allows the use of two different providers to increase availability. If there is a power failure or interference with a provider, the router automatically switches to another network using the second SIM card.

CDMA450 EVDO (optional)

CDMA450 is a 3rd generation mobile radio standard in the 450 MHz frequency band and does not have to compete with the public mobile network at least in Germany. The CDMA450 technology is already established and its implementation relatively cheap. CDMA450 has the potential to become a safe solution for utilities, smart metering and smart grids.

DSL access to public networks

An Ethernet port can be set up to connect to a DSL modem for access to public networks.

Wi-Fi 802.11 b / g / n (optional)

The DSR-200s can optionally be equipped with Wi-Fi and act as an access point (AP) or client. With existing WiFi networks of the user, this interface can be used as an additional connection to the control center.

As an access point, the router allows wireless access to the network in the station. This access point can be remotely turned on or off.

Redundancy

All network accesses can be used as a main or backup path to ensure the safe connection of the station to a central control system.

VRRP

Virtual Router Redundancy Protocol (VRRP) is a method for increasing the availability of important gateways in local networks through redundant routers.

Multiple physical routers are grouped into a logical group. This group of routers now presents itself in the network as a logical virtual router and can be addressed via a single gateway address.

Security

The basic requirements of DIN-27001 for critical infrastructures are naturally integrated into the DSR-200 series Firewall and Access Control

The DSR-200 series has a built-in firewall with the highest security requirements. In addition to stateful packet inspection, the routers also support management in their own VLAN, HTTPS / SSH / SNMPv3, switching off unused LAN ports, different authorizations (user / password) and port release via MAC address.

VPN

IPSec / OpenVPN / PPTP / L2TP / GRE. The routers allow the use of various static and dynamic VPN protocols for secure networking. The user can use both pre-shared key or certificates.

The DSR-200 series supports TLS1.2 and thus very strict security specifications for IT infrastructures VLAN and routing

The routers support VLAN, static and dynamic routing with RIP or OSPF.

Hardware Interfaces and I/ Os

By default, the DSR-200 series routers have two or four Ethernet ports, one USB and one serial port (RS-232 / RS-485), and two digital I / O.

Optionally, Wi-Fi can be configured for wireless access in the station industrial environments.

The DSR-200s are designed for use in harsh environments and in industrial environments.

The routers have a metal housing with DIN rail mounting, the power supply is designed for 12 – 60 VDC and the temperature range from -40 ° C to + 85 ° C.

Network Connection

LTE with up to 100 Mbit / s

With LTE, you can achieve higher speeds and benefit from better network coverage, especially in rural areas.

All routers are backwards compatible in the mobile radio standard. Thus, the 4G / LTE variant also supports 3G (HSPA +, HSUPA, HSDPA, UMTS) and 2G (EDGE, GPRS, GSM). If the network with the highest standard is not available or the reception is too weak, the system automatically switches to the next best network.

Dual-SIM

The devices can be operated with two SIM cards. This allows the use of two different providers to increase availability. If there is a power failure or interference with a provider, the router automatically switches to another network using the second SIM card.

CDMA450 EVDO (optional)

CDMA450 is a 3rd generation mobile radio standard in the 450 MHz frequency band and does not have to compete with the public mobile network at least in Germany. The CDMA450 technology is already established and its implementation relatively cheap. CDMA450 has the potential to become a safe solution for utilities, smart metering and smart grids.

DSL access to public networks

An Ethernet port can be set up to connect to a DSL modem for access to public networks.

Wi-Fi 802.11 b/g/n (optional)

The DSR-200s can optionally be equipped with Wi-Fi and act as an access point (AP) or client. With existing WiFi networks of the user, this interface can be used as an additional connection to the control center.

As an access point, the router allows wireless access to the network in the station. This access point can be remotely turned on or off.

Redundancy

All network accesses can be used as a main or backup path to ensure the safe connection of the station to a central control system.

VRRP

Virtual Router Redundancy Protocol (VRRP) is a method for increasing the availability of important gateways in local networks through redundant routers.

Multiple physical routers are grouped into a logical group. This group of routers now presents itself in the network as a logical virtual router and can be addressed via a single gateway address.

Security

The basic requirements of DIN-27001 for critical infrastructures are naturally integrated into the DSR-200 series.

Firewall and Access Control

The DSR-200 series has a built-in firewall with the highest security requirements. In addition to stateful packet inspection, the routers also support management in their own VLAN, HTTPS / SSH / SNMPv3, switching off unused LAN ports, different authorizations (user / password) and port release via MAC address.

VPN

 IPSec / OpenVPN / PPTP / L2TP / GRE. The routers allow the use of various static and dynamic VPN protocols for secure networking. The user can use both pre-shared key or certificates.

The DSR-200 series supports TLS1.2 and thus very strict security specifications for IT infrastructures.

VLAN and Routing

The routers support VLAN, static and dynamic routing with RIP or OSPF.

Hardware

Interfaces and I/O’s

By default, the DSR-200 series routers have two or four Ethernet ports, one USB and one serial port (RS-232 / RS-485), and two digital I / O. Optionally, Wi-Fi can be configured for wireless access in the station.

Industrial environments

The DSR-200s are designed for use in harsh environments and in industrial environments.

The routers have a metal housing with DIN rail mounting, the power supply is designed for 12 – 60 VDC and the temperature range from -40 ° C to + 85 ° C.

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