What Is a Fixed IP SIM Card? Everything IoT Engineers Need to Know
A fixed IP SIM gives your IoT device a permanent public IP address that stays the same regardless of which mast it connects to. Here is how it works and when you need one.
Topic hub
Connectivity
In this Connectivity hub you’ll find news and insights on the networks and protocols that connect IoT devices, from 5G and LTE to LoRaWAN and satellite. Learn how cellular, Wi‑Fi and low‑power wide‑area networks enable industrial automation, smart cities and remote monitoring. Explore articles on SIM management, antenna optimisation and network standards across the IoT ecosystem.
IoT Predictive Maintenance
Industrial IoT / Condition Monitoring IoT Predictive Maintenance: How Cellular Connectivity Keeps Industrial Assets Running Predictive maintenance uses IoT sensors, continuous data feeds, and AI-assis...
What is an IoT SIM Card? (And What is an M2M SIM?)
What is an IoT SIM Card? (And What is an M2M SIM?) A clear guide to IoT and M2M SIMs - what they are, how they differ from standard SIMs, and why the terminology often means the same thing.
Port forwarding on industrial routers: public IP, private APN, overlay VPN and VPS explained
Port forwarding on industrial routers: what it is, when you still need it, and when you don't Port forwarding is a core feature of every industrial router - but in 2026 the market has fractured into d...
10 Ways to Use a £2.23/Month VPS for IoT and M2M
Infrastructure - VPS for IoT 10 Ways to Use a £2.23/Month VPS Server for IoT and M2M Applications A low-cost Linux VPS with a dedicated IPv4 address, unmetered bandwidth, and 30 GB of NVMe storage is...
Outdoor 4G and 5G Routers: The Complete Guide
IoTPortal.co.uk • June 2026 • 20 min read • Peter Green Outdoor 4G and 5G Routers: The Complete Guide Purpose-built weatherproof units, enclosure kits, PoE chaining, out-of-band managem...
Remote Access to SCADA Systems: Platforms, Protocols, and the Connectivity Layer
IoTPortal.co.uk • June 2026 • 18 min read • Peter Green Remote Access to SCADA Systems: Platforms, Protocols, and the Connectivity Layer Who makes SCADA remote access software, how oper...
Low-power industrial cellular routers: a buyer’s guide for solar and battery-powered IoT deployments
One box. 4G connection, Wi-Fi, and power for four cameras. That is the Milesight UR35. If you have ever installed a remote CCTV enclosure, you know the problem.
SCADA Over Cellular
Connectivity | SCADA | Energy & Utilities SCADA Over Cellular: Connecting Industrial Control Systems to the Cloud with 4G, 5G, and What Comes Next For decades, SCADA system...
Edge Computing for Industrial IoT
Edge Computing & Connectivity Edge Computing for Industrial IoT: Why Processing at the Network Edge Is No Longer Optional Industrial IoT deployments are generating more data than centralised cloud...
O2 Satellite
Satellite IoT / NTN / M2M Connectivity O2 Satellite, NTN, and the Satellite IoT Revolution: What It Actually Means for M2M O2 and Starlink switched on the UK's first direct-to-device satellite service...
Why You Should Apply Dielectric Grease to SIM Card Contacts in Industrial IoT Routers
If your 4G or 5G IoT router keeps losing its SIM card connection, or you're seeing intermittent "No SIM Detected" errors on remote equipment, corroded SIM card contacts could be the culprit.
Smart Cities, Smart Poles And IoT Connection
Smart Poles, Urban Sensing & the Missing Connectivity Layer in Smart Cities | IoTPortal { "@context": "https://schema.
Why isn’t my roaming SIM switching networks automatically in a Teltonika router?
A roaming SIM, often sold as a multi-network , multi-operator , or IoT SIM , allows a router to connect to more than one mobile network.
Teltonika Introduces the RUTM16 and RUTM20: Industrial Routers Designed for How IoT Is Actually Deployed
In industrial IoT, connectivity problems rarely come from a lack of speed. They come from inconsistent global hardware, limited space and power, fragile remote access methods, and devices that become...
RMS Credits: The Straight-Talking Guide to Teltonika RMS, APIs, Network Map, Third-Party Access, and the Shift to Edge
If you sell, deploy, or support Teltonika routers in the real world, you already know the awkward truth: the router is rarely the problem. The problem is everything around it.
Teltonika’s Move Into Edge Computing: Why It Matters and How the New RUTC41 Changes the Game
Summary: This article explains why Teltonika Networks is moving beyond routers into edge computing, what the new RUTC41 router-plus-compute platform does differently, and what it means for UK industri...
Robustel and Kigen: A Practical Step Forward for Industrial eSIM (SGP22 vs SGP32)
Understanding eSIM and SGP22 vs SGP32 and Robustel. If you’ve worked with IoT kit for any length of time, you’ll know that the SIM card is often the least exciting part of a deployment but the most an...
Teltonika RUT956 – The Workhorse 4G Router For Real-World IoT
Some routers look clever on a datasheet and fall apart in the field. The Teltonika RUT956 does the opposite. It is not about chasing 5G bragging rights.
Teltonika CALYX Pi Hat
Industrial Cellular Connectivity for Raspberry Pi Launching 12 November 2025 — Availability end of 2025 Raspberry Pi has always been brilliant for edge computing, automation and prototyping.
Adeunis: IoT Sensors and Smart-Building Solutions
Adeunis IoT is a France-based specialist in low-power wireless sensors and packaged IoT solutions for buildings and industry.
Teltonika RUT276 – Industrial 5G RedCap Serial Router (RS485/RS232)
Why The RUT276 Is Great for IIoT (Industrial IoT) Industrial systems don’t move fast. They’re designed to keep running, sometimes for decades.
IoT Endpoint Security
IoT Endpoint Security: How One Device Can Breach Your VLAN (CCNA 1.1.f) Most network compromises don’t start with advanced exploits.
IoT
Dual IMSI SIM vs Dual Modem Router
PG Peter Green Senior Editor, IoT Portal Published: 23 Oct 2025 | Updated: 23 Oct 2025 Dual-IMSI vs Dual-Modem Routers: A Practical Guide to Resilient Cellular Connectivity “Always on” isn...
