
Don’t leave ‘things’ behind
How Cellular IoT can solve part of the PSTN problem.
What about the devices still relying on PSTN?
As the PSTN Switch-off approaches, most resellers are rightly focused on upgrading Broadband and IP Voice. But many mission-critical devices, from alarms and intercoms to meters and medical systems, still rely on analogue lines.
Without a connectivity replacement, these devices will stop working.
That’s where Cellular IoT Connectivity comes in. It’s a flexible, resilient and secure option that complements fixed-line services, keeping essential systems online.
At Giacom, we offer a full range of connectivity solutions from FTTP, Ethernet, IP Voice to Cellular IoT, giving you everything you need to deliver the right solution for every customer.
Why Cellular IoT?
IoT provides the foundation to support a vast range of Cloud and Communications solutions by leveraging the same mobile networks we use for smartphones and tablets. But it goes further than that. It complements and enhances the experience with added security features, seamless integration, and reliability across multiple networks.

Secure
Integrate into existing network infrastructure with private APNs and static IP to prevent unauthorised device access or tampering.

Reliable
Access 900+ networks in 180+ countries and access multiple networks on one SIM for maximum uptime.

Flexible
Solutions can encompass a spectrum of technologies such as 4G LTE, 5G, LTE-M & NB-IoT to meet any requirements.

Typical use cases where Cellular IoT shines
Every connected device and deployment is different — some are ideal for fibre or Ethernet, while others work better with Cellular IoT. If fixed connectivity isn’t the right fit in any of the scenarios below, Cellular IoT could be the answer.
Explore use cases for connected devices
- Alarm systems: Intruder, fire and panic alarms need uninterrupted monitoring. IoT offers secure mobile backup or full replacement.
- Lift lines: Older PSTN auto-dialler systems can be upgraded to resilient mobile connectivity.
- Entry and intercom systems: 4G/5G ensures reliable communication and remote management.
- Healthcare and telecare: Devices used by vulnerable individuals must remain online without reliance on fixed-line access.
- ATMs: Mobile connectivity provides fast, secure, redundant links for real-time processing.
- POS systems: Enable mobile, on-the-go payment processing
- Intelligent vending machines & kiosks: Support real-time monitoring and stock tracking
- Remote CCTV & security: Operate surveillance without the need for broadband
- Environmental sensors: Track temperature, water levels or air quality remotely
- Smart parking: Enable live availability updates and mobile payments
- Digital signage: Push content updates in real-time
- EV charging: Monitor usage, diagnostics, and payments remotely
- Utility metering: Automate water, gas, and electric readings
Why IoT matters for resellers
Offering fixed and cellular connectivity allows you to build complete, tailored solutions and generate recurring revenue tied to your customers’ operational infrastructure. Cellular IoT offers a host of benefits to Channel partners and end customers, including:
- Reliable: Multi-network SIMs with automatic failover
- Cost-effective: No investment in cabling or on-site infrastructure
- Flexible: Works where broadband doesn’t
- Secure: With private APNs, firewalls, and static IPs
- Sticky: The deeper the integration, the harder it is to rip out

Article: How Cellular IoT can help solve the hidden PSTN challenge
As the PSTN switch-off nears, find out more about how Cellular IoT Connectivity can play an important role in keeping vital systems like alarms, ATMs and telecare devices online.

Smarter connectivity with Giacom
Smart Mobile Data, our plug-and-play IoT solution, makes it easy for resellers to start. It’s designed to complement your existing services, open new revenue streams, and help your customers stay connected to the people and the things that matter most.
Let’s talk about how IoT can add value to your connectivity portfolio.
