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Teltonika TRB255

Teltonika TRB255


The Teltonika TRB255 is an industrial CAT-M1 4G gateway with LPWAN modem, GNSS receiver, Fast Ethernet port, 16-pin connector block, and digital inputs/outputs. It supports IoT features like secure power connector, serial communication, and RS232/RS485 interfaces. The gateway is designed for long-term reliability in industrial IoT settings, offering strong network speeds and low latency. It integrates modern and legacy equipment, operates with various utilities, and is energy-efficient, robust, and lightweight. The TRB255 can be powered via passive PoE, making it adaptable for diverse scenarios including vehicles and industrial environments.

SKU: TRB255 Category:


Teltonika TRB255 Features


  • Mobile module – LTE (Cat M1) / NB-IoT / EGPRS
  • SIM switch – 2 SIM cards, auto-switch cases: weak signal, data limit, SMS limit, roaming, no network, network denied, data connection fail, SIM idle protection
  • 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, and MNC
  • SMS – SMS status, SMS configuration, send/read SMS via HTTP POST/GET, EMAIL to SMS, SMS to EMAIL, SMS to HTTP, SMS to SMS, scheduled SMS, SMS autoreply, SMPP
  • USSD – Supports sending and reading Unstructured Supplementary Service Data messages
  • Black/White list – Operator black/white list (by country or separate operators)
  • Multiple PDN – Possibility to use different PDNs for multiple network access and services
  • Band management – Band lock, Used band status display
  • SIM idle protection service – When working with devices with two SIM slots, the one not currently in use will remain idle until the device switches to it, meaning that no data is used on the card until then
  • 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


  • 1 x ETH port, 10/100 Mbps, compliance with IEEE 802.3, IEEE 802.3u, 802.3az standards, supports auto MDI/MDIX crossover


  • 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)
  • VoIP passthrough support – H.323 and SIP-alg protocol NAT helpers, allowing proper routing of VoIP packets
  • Connection monitoring – Ping Reboot, Wget Reboot, Periodic Reboot, LCP and ICMP for link inspection
  • Firewall – Port forward, traffic rules, custom rules
  • Firewall status page – View all your Firewall statistics, rules, and rule counters
  • Ports management – View device ports, enable and disable each of them, turn auto-configuration on or off, change their transmission speed, and so on
  • Network topology – Visual representation of your network, showing which devices are connected to which other devices
  • Hotspot – Captive portal (Hotspot), internal/external Radius server, SMS authorization, internal/external landing page, walled garden, user scripts, URL parameters, user groups, individual user or group limitations, user management, 9 default customizable themes and option to upload and download customised hotspot themes
  • DHCP – Static and dynamic IP allocation, DHCP Relay
  • QoS / Smart Queue Management (SQM) – Traffic priority queuing by source/destination, service, protocol or port, WMM, 802.11e
  • DDNS – Supported >25 service providers, others can be configured manually
  • Network backup – Mobile, VRRP, Wired options, each of which can be used as an automatic Failover
  • SSHFS – Possibility to mount remote file system via SSH protocol


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