TRB255 can be used to integrate modern and legacy industrial equipment into one solution via RS232, RS485 & Ethernet interfaces.
This industrial LTE Cat M1 & NB-IoT gateway is backward compatible to EGPRS (2G) networks.
It can still be used with 2G network, however in case it gets shut down, there is a possibility to switch to LPWAN connectivity options.
TRB255 has a wide range of industrial and networking features such as Modbus, SMS control, Firewall, OpenVPN and more.
This product is compatible with the Teltonika Networks Remote Management System (RMS).

Specifications

MOBILE

Mobile module: LTE (Cat M1) / NB-IoT / EGPRS
SIM switch: 2 SIM cards, auto-switch cases: weak signal, data limit, SMS limit, on roaming, no network, network denied, data connection fail
Status: Signal strength, Connected band, SINR, RSRP, RSRQ, Bytes sent/received
Bridge: Direct connection (bridge) between mobile ISP and device on LAN
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 (planned), SMS autoreply
USSD: Supports sending and reading Unstructured Supplementary Service Data messages
Black/White list (planned): Operator black/white list
Multiple PDN: Possibility to use different PDNs for multiple network access and services
Band management: Used band status display, Band lock (planned)
APN: Auto APN

ETHERNET

LAN: 1 x LAN port 10/100 Mbps, comply IEEE 802.3, IEEE 802.3u standards, supports auto MDI/MDIX crossover (Configurable to work as WAN port)

NETWORK

Routing: Static routing, Dynamic routing (BGP, OSPF v2, RIP v1/v2) (planned)
Network protocols: TCP, UDP, IPv4, IPv6, ICMP, NTP, DNS, HTTP, HTTPS, FTP, SMTP, SSL v3, TLS, ARP, PPP, SSH, DHCP, Telnet, MQTT, Wake On Lan (WOL)
VoIP passthrough support (planned): H.323 and SIP-alg protocol NAT helpers, allowing proper routing of VoIP packets
Connection monitoring: Ping Reboot, Periodic Reboot, LCP and ICMP for link inspection
Firewall: Port forward, traffic rules, custom rules
DHCP: Static and dynamic IP allocation, DHCP Relay
QoS / Smart Queue Management (SQM) (planned): Traffic priority queuing by source/destination, service, protocol or port, WMM, 802.11e
DDNS: Supported >25 service providers, others can be configured manually
SSHFS (planned): Possibility to mount remote file system via SSH protocol

SECURITY

Authentication: Pre-shared key, digital certificates, X.509 certificates
Firewall: Pre-configured firewall rules can be enabled via WebUI, unlimited firewall configuration via CLI; DMZ; NAT; NAT-T
Attack prevention: DDOS prevention (SYN flood protection, SSH attack prevention, HTTP/HTTPS attack prevention), port scan prevention (SYN-FIN, SYN-RST, X-mas, NULL flags, FIN scan attacks)
VLAN (planned): Tag based VLAN separation
Mobile quota control: Custom data limits for both SIM cards
WEB filter (planned): Blacklist for blocking out unwanted websites, Whitelist for specifying allowed sites only
Access control: Flexible access control of TCP, UDP, ICMP packets, MAC address filter

VPN

OpenVPN: Multiple clients and server can be running simultaneously, 12 encryption methods
OpenVPN Encryption: DES-CBC, RC2-CBC, DES-EDE-CBC, DES-EDE3-CBC, DESX-CBC, BF-CBC, RC2-40-CBC, CAST5-CBC, RC2-64-CBC, AES-128-CBC, AES-192-CBC, AES-256-CBC
IPSec: IKEv1, IKEv2, with 5 encryption methods (DES, 3DES, AES128, AES192, AES256)
GRE: GRE tunnel
Stunnel: Proxy designed to add TLS encryption functionality to existing clients and servers without any changes in the program’s code
PPTP, L2TP: Client/Server services can run simultaneously, L2TPv3 support
DMVPN: Method of building scalable IPsec VPNs
SSTP: SSTP client instance support
ZeroTier: ZeroTier VPN client support

SERIAL COMMMUNICATION MODES

Modes: Console, OverIP, Modem (planned), Modbus RTU master, Modbus gateway, NTRIP client (planned)

MODBUS
MODBUS TCP SLAVE

ID filtering: Respond to one ID in range [1;255] or any
Allow remote access: Allow access through WAN
Custom registers: Modbus TCP custom register block, which allows to read/write to a file inside the router, and can be used to extend Modbus TCP slave functionality

MODBUS TCP MASTER

Supported functions: 01, 02, 03, 04, 05, 06, 15, 16
Supported data formats: 8 bit: INT, UINT; 16 bit: INT, UINT (MSB or LSB first); 32 bit: float, INT, UINT (ABCD (big-endian), DCBA (little-endian), CDAB, BADC), HEX, ASCII

MODBUS RTU MASTER

Supported baud rates: From 300 to 3000000
Supported functions: 01, 02, 03, 04, 05, 06, 15, 16
Supported data formats: 8 bit: INT, UINT; 16 bit: INT, UINT (MSB or LSB first); 32 bit: float, INT, UINT (ABCD (big-endian), DCBA (little-endian), CDAB, BADC), HEX, ASCII
Number of data bits: 7 or 8
Number of stop bits: 1 or 2
Parity bits: None, Even, Odd
Flow control: None, RTS/CTS (only for RS232 interface), Xon/Xoff

MQTT GATEWAY

Gateway: Allows sending commands and receiving data from Modbus Master trough MQTT broker

DATA TO SERVER

Protocols: HTTP(S), MQTT, Azure MQTT, Kinesis

MONITORING & MANAGEMENT

WEB UI: HTTP/HTTPS, status, configuration, FW update, CLI, troubleshoot, event log, system log, kernel log
FOTA: Firmware update from server, automatic notification
SSH: SSH (v1, v2)
SMS: SMS status, SMS configuration, send/read SMS via HTTP POST/GET
TR-069: OpenACS, EasyCwmp, ACSLite, tGem, LibreACS, GenieACS, FreeACS, LibCWMP, Friendly tech, AVSystem
MQTT: MQTT Broker, MQTT publisher
SNMP: SNMP (v1, v2, v3), SNMP Trap
JSON-RPC: Management API over HTTP/HTTPS
Modbus: Modbus TCP status/control
RMS: Teltonika Remote Management Systems (RMS)

IoT PLATFORMS

Cloud of Things: Allows monitoring of: Device data, Mobile data, Network info, Availability
ThingWorx: Allows monitoring of: WAN Type, WAN IP Mobile Operator Name, Mobile Signal Strength, Mobile Network Type
Cumulocity: Allows monitoring of: Device Model, Revision and Serial Number, Mobile Cell ID, ICCID, IMEI, Connection Type, Operator, Signal Strength, WAN Type and IP
Azure IoT Hub: Can send device IP, Number of bytes send/received/ 3G connection state, Network link state, IMEI, ICCID,
Model, Manufacturer, Serial, Revision, IMSI, Sim State, PIN state, GSM signal, WCDMA RSCP, WCDMA EC/IO, LTE RSRP, LTE SINR, LTE RSRQ, CELL ID,
Operator, Operator number, Connection type, Temperature, PIN count to Azure IoT Hub server

SYSTEM CHARACTERISTICS

CPU: Qualcomm QCA9531, MIPS 24kc, 650 MHz
RAM: 64 MB, DDR2
Flash storage: 16MB SPI Flash (4 MB available for user)

FIRMWARE / CONFIGURATION

WEB UI: Update FW from file, check FW on server, configuration profiles, configuration backup
FOTA: Update FW/configuration from server
RMS: Update FW/configuration for multiple devices
Keep settings: Update FW without losing current configuration

FIRMWARE CUSTOMIZATION

Operating system: RutOS (OpenWrt based Linux OS)
Supported languages: Busybox shell, Lua, C, C++
Development tools: SDK package with build environment provided

LOCATION TRACKING

GNSS: GPS, GLONASS, BeiDou, Galileo and QZSS
Coordinates: GNSS coordinates via WebUI, SMS, TAVL, RMS
NMEA: NMEA 0183
NTRIP (planned): NTRIP protocol (Networked Transport of RTCM via Internet Protocol)
Server software: Supported server software TAVL, RMS
Mobile Network Geolocating: Location without using GPS, get approximate location based on mobile tower on RMS
Geofencing: Configurable multiple geofence zones

INPUT/OUTPUT

Configurable I/O: 3 x Configurable Inputs/Outputs. Digital input 0 - 6 V detected as logic low, 8 - 30 V detected as logic high. Open collector output, max output 30 V, 300 mA
Analog input: 1 x Analog input (0 - 30 V)
Events: SMS, Email
Output control: HTTP POST/GET, Schedule
I/O juggler: Allows to set certain I/O conditions to initiate event

SERIAL

RS232: Terminal block connector: TX, RX, RTS, CTS
RS485: Terminal block connector: D+, D-, R+, R- (2 or 4 wire interface)
Supported baud rates: From 300 to 3000000
Number of data bits: 7 or 8
Number of stop bits: 1 or 2
Parity: None, Even, Odd
Flow control: None, RTS/CTS (only for RS232 interface), Xon/Xoff

POWER

Connector: 2 pins in 16 pin industrial terminal block
Input voltage range: 9 – 30 VDC, reverse polarity protection, surge protection +/-1 kV 50 µs max
Power consumption: Idle: <1.2 W, Max: <5 W

PHYSICAL INTERFACES (PORTS, LEDS, ANTENNAS, BUTTON, SIM)

Ethernet: 1 x RJ45 port, 10/100 Mbps
I/O’s: 3 x Configurable I/O, 1 x Analog input in 16 pin terminal block
Status LEDs: 3 x connection status LEDs, 3 x connection strength LEDs, 1 x power LED, 1 x Eth port status LED
SIM: 2 x SIM slots (Mini SIM – 2FF), 1.8 V/3 V, double stacked SIM tray
Power: 2 pins in 16 pin terminal block
Antennas: 1 x SMA connector for Mobile, 1 x SMA connector for GNSS
RS232: 4 pins in 16 pin terminal block (TX, RX, RTS, CTS)
RS485: 4 pins in 16 pin terminal block (D+, D-, R+, R-)
Reset: Reboot/User default reset/Factory reset button

PHYSICAL SPECIFICATION

Casing material: Aluminium housing with DIN rail mounting option
Dimensions (W x H x D): 83 x 25 x 74.2 mm
Weight: 165 g
Mounting options: DIN rail, wall mounting (additional kits needed), flat surface placement

OPERATING ENVIRONMENT