Teltonika TRB256
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The TRB256 from Teltonika is a reliable industrial 4G LTE NB-IoT gateway that is suitable for many IoT solutions. It comes with various WAN interfaces, including I/Os, RS232, RS485, and Ethernet port, along with dual SIM capabilities for uninterrupted connectivity. This gateway also supports the 450 MHz frequency band, providing excellent LTE signal penetration, and making it ideal for a wide range of M2M applications.
Tech Specs
Click here for the Teltonika TRB256 datasheet.
| Device Specifications | |
| Mobile | |
| Mobile module | 4G LTE Cat M1 up to 588 DL / 1119 UL kbps Cat NB2 up to 127 DL / 158.5 UL kbps Cat NB1 up to 32 DL / 70 UL kbps (Simultaneous operation of cellular and GNSS connectivity is not supported) |
| 3GPP Release | Release 14 |
| SIM switch | 2 SIM cards Auto-switch cases: weak signal, data limit, SMS limit, on roaming, no network, network denied, data connection fail |
| Status | IMSI, ICCID, operator, operator state, data connection state, network type, bandwidth, connected band, signal strength (RSSI), SINR, RSRP, RSRQ, EC/IO, RSCP, data sent/received, LAC, TAC, cell ID, ARFCN, UARFCN, EARFCN, MCC, MNC |
| SMS | SMS status, SMS configuration EMAIL to SMS, SMS to EMAIL, SMS to HTTP, SMS to SMS Scheduled SMS, SMS autoreply, SMPP |
| Block / Allow list | Operator block/allow list (by country or separate operators) |
| Band management | Band lock, used band status display |
| SIM idle protection service | Periodically switches to unused SIM and establishes data connection to prevent SIM blocking |
| SIM PIN code management | Set, change or disable SIM PIN |
| APN | Auto APN |
| Bridge | Direct connection (bridge) between mobile ISP and device on LAN |
| Passthrough | Gateway assigns its mobile WAN IP address to another device on LAN |
| Ethernet | |
| Ethernet | 1 × ETH port, 10/100 Mbps IEEE 802.3, IEEE 802.3u, IEEE 802.3az Supports auto MDI/MDIX crossover |
| Network | |
| Routing | Static routing Dynamic routing (BGP, OSPF v2, RIP v1/v2, EIGRP, NHRP) Policy-based routing |
| Network protocols | TCP, UDP, IPv4, IPv6, ICMP, NTP, DNS, HTTP, HTTPS, SFTP, FTP, SMTP, SSL/TLS, ARP, VRRP, PPP, PPPoE, UPnP, SSH, DHCP, Telnet, SMPP, SNMP, MQTT, Wake On LAN (WOL), VXLAN |
| VoIP passthrough support | H.323 and SIP-ALG protocol NAT helpers for proper VoIP packet routing |
| Connection monitoring | Ping Reboot, Wget Reboot, Periodic Reboot LCP and ICMP for link inspection |
| Firewall | Port forwarding, traffic rules, custom rules, TTL target customisation |
| Firewall status page | View firewall statistics, rules and rule counters |
| Port management | View device ports, enable/disable ports, auto-configuration, change transmission speed |
| Network topology | Visual representation of connected network devices |
| Hotspot | Captive portal (hotspot) Internal/external RADIUS server, RADIUS MAC authentication SMS authorisation, SSO authentication Internal/external landing page, walled garden User scripts, URL parameters, user groups Individual user/group limitations, user management 9 default customisable themes, upload/download custom themes |
| DHCP | Static and dynamic IP allocation DHCP relay, DHCP server configuration and status Static leases: MAC with wildcards |
| QoS / Smart Queue Management (SQM) | Traffic priority by source/destination, service, protocol or port WMM, 802.11e |
| DDNS | Supported >77 service providers Manual configuration supported |
| DNS over HTTPS | DNS over HTTPS proxy for secure DNS resolution |
| Network backup | VRRP, wired options for automatic failover, mobile backup |
| SSHFS | Mount remote file systems via SSH protocol |
| Traffic management | Real-time monitoring, wireless signal charts, traffic usage history |
| Security | |
| Authentication | Pre-shared key, X.509 certificates, username/password, OTP, RADIUS authentication |
| Access control | Flexible firewall rules, user access management, role-based access control |
| Attack prevention | DDoS prevention, SYN flood protection, brute-force protection, port scan detection |
| Encryption | AES, DES, 3DES, SHA-1, SHA-2, MD5 |
| VPN | |
| OpenVPN | Client/server mode TCP/UDP support Encryption: AES-128-CBC, AES-192-CBC, AES-256-CBC, Blowfish, Camellia Authentication: X.509 certificates, username/password |
| IPsec | Tunnel and transport modes IKEv1/IKEv2 support AES, DES, 3DES encryption SHA-1, SHA-2 authentication |
| WireGuard | High-performance VPN with modern cryptography Simple configuration and fast reconnection |
| L2TP | L2TPv3 client/server support |
| PPTP | PPTP client/server support |
| GRE | GRE tunnel support |
| ZeroTier | Software-defined networking for secure virtual networks |
| Industrial Protocols | |
| BACnet | Supported modes: Router Connection types: RS485, TCP Multiple BACnet/IP interfaces, network number assignment, preconfigured BBMD |
| OPC UA | Modes: Client, Server Connection type: TCP |
| MODBUS | Modes: Server, Client Connection types: RTU (RS232/RS485), TCP Custom registers and supported data formats: 8/16/32-bit INT, UINT, float, HEX, ASCII |
| MQTT Gateway | Modbus MQTT Gateway: send/receive MODBUS commands via MQTT broker |
| Data to Server | Protocols: HTTP(S), MQTT, Azure MQTT Extract parameters from multiple sources and send to single server LUA scripting supported |
| DLMS/COSEM | Modes: Client Connection: RS232, RS485, TCP |
| IoT Platforms | |
| ThingWorx | Monitors WAN type, IP, Mobile operator, signal, network type |
| Cumulocity | Monitors device model, serial number, WAN type/IP, cell ID, ICCID, IMEI, operator, signal strength Reboot and firmware upgrade actions |
| Azure IoT Hub | Configurable with Data to Server, Direct method support, Device Provisioning Service integration |
| AWS IoT Core | Interact with AWS cloud, call device API via AWS Jobs |
| System Characteristics | |
| CPU | Mediatek 580 MHz, MIPS 24KEc |
| RAM | 128 MB |
| FLASH storage | 16 MB |
| Power | |
| Connector | 2-pin in 16-pin industrial terminal block |
| Input voltage range | 9 – 30 VDC, reverse polarity protection, surge protection ±1kV 50 µs |
| Power consumption | Idle: <2 W, Max: <3.5 W |
| Physical Interfaces | |
| Ethernet | 1 × RJ45 port, 10/100 Mbps |
| I/Os | 3 × Configurable digital I/O in 16-pin terminal block |
| Status LEDs | 3 × connection status, 3 × connection strength, 1 × power, 1 × Ethernet port status |
| SIM | 2 × Mini SIM (2FF), 1.8 V/3 V, double stacked SIM tray |
| Antennas | 1 × SMA LTE, 1 × SMA GNSS |
| Operating Environment | |
| Operating temperature | -40 °C to 75 °C |
| Operating humidity | 10% – 90% non-condensing |
| Ingress Protection Rating | IP30 |
| Regulatory & Type Approvals | |
| Regulatory | CE, UKCA, EAC, RCM, CB, WEEE |
FAQs
Q1: What is the Teltonika TRB256 and what is it used for?
A: The Teltonika TRB256 is an industrial cellular IoT gateway designed for low-power, long-range data communication. It is commonly used for remote monitoring, telemetry, smart metering, and machine-to-machine applications.
Q2: Which cellular technologies does the Teltonika TRB256 support?
A: The TRB256 supports LTE-M (Cat-M1) and NB-IoT (NB1/NB2) technologies, making it ideal for low-bandwidth, energy-efficient IoT deployments where coverage and reliability are critical.
Q3: What interfaces are available on the Teltonika TRB256?
A: The gateway includes a 10/100 Mbps Ethernet port, RS232 and RS485 serial interfaces, and digital input/output pins, allowing it to connect directly to industrial sensors, controllers, and legacy equipment.
Q4: How is the Teltonika TRB256 powered and installed?
A: The TRB256 is powered via an industrial DC power input with a wide voltage range. Its compact form factor supports DIN-rail, wall, or flat-surface mounting, making it easy to install in control panels and cabinets.
Q5: What makes the Teltonika TRB256 suitable for industrial IoT use?
A: The TRB256 features a rugged aluminium housing, dual SIM support for connectivity resilience, a wide operating temperature range, and support for low-power cellular technologies, ensuring reliable operation in demanding industrial environments.