How SIMSY Works — Programmable Cellular Network for Developers
The SIMSY Platform

Managed cellular connectivity that extends to the device

SIMSY operates a cloud-native mobile core network that integrates directly with your cellular hardware. This is not resold carrier connectivity. SIMSY controls the network layer.

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Because SIMSY controls the network layer, we can do things others simply cannot

Configure devices from the network at boot
Discover devices connected to their LAN ports
Intercept and redirect telemetry at the network layer
Enforce security policies before any software runs

All without your devices or data touching the public internet or a public facing platform.

The result is automated configuration, continuous monitoring, stronger security, and a clear compliance position, all delivered at a fraction of the cost of managing these things separately.

The Difference

Traditional approach vs SIMSY

Connectivity and device management are separate systems with no integration
Connectivity and device management unified in a single interface
Hardware manufacturer platform accessed over the public internet, exposing entire estate behind a single login
Devices managed through private cellular network with no public internet exposure
Configuration is manual, per-device, dependent on skilled engineers
Configuration delivered from the network at device boot, not pushed from a cloud platform
Monitoring limited to what the device can self-report
Network intelligence combined with device-level data for deeper visibility
Data collection requires agents or software on every device
Telemetry intercepted and collected at the network layer, without touching the device
Security applied at the application or firewall layer, can be bypassed
Security enforced at the network layer with default-deny architecture
No unified audit trail across connectivity and device events
Every event across network and device recorded in a single audit trail
The Edge API

Network identity as authentication

Every SIMSY SIM has a network identity. When a device makes a request to the SIMSY Edge API over its cellular connection, the network intercepts the request, identifies the calling SIM session, and returns data scoped only to that device. The SIM session itself is the authentication. No tokens, no credentials, no complex provisioning.

At boot, a device retrieves:

  • Its own identity: ICCID, IMSI, MSISDN, endpoint ID, name, group
  • Its current network context: IP address, country, operator, radio access type
  • Its configuration: MQTT broker URL, customer ID, site name, reporting interval, API keys, service tokens

A device can also write data back to the network via the same API: sensor readings, status flags, fault codes, heartbeat timestamps. This is how zero-touch provisioning works in practice. One firmware image serves any fleet size.

LAN Device Discovery

Automatic device identification

When any device is plugged into the LAN port of a SIMSY-connected router, the router detects it within 60 seconds, reads its MAC address from the ARP table, and writes its identity to the SIMSY network. No software required on the connected device.

Vendor identification from MAC OUI: Hikvision, Dahua, Axis, Teltonika, and hundreds more
Device type classification: IP camera, industrial sensor, edge compute, router, printer
Default credential lookup for known vendors with security alert if unchanged
Remote access URL automatically generated for camera and device admin interfaces
Network-Native Data Collection

Collect telemetry without touching devices

SIMSY routing policies can intercept specific traffic at the network layer and redirect it to a different destination, without the sending device being aware. This is DNAT (Destination Network Address Translation) operating at the SIMSY core.

  • MQTT traffic automatically redirected to an alternative MQTT broker, regardless of configured broker address
  • Industrial data streams (controller telemetry) intercepted and parsed without touching hardware
  • HTTP telemetry from any device captured at the network layer
  • SNMP polling, Modbus over IP, and other industrial protocols intercepted and logged
  • Data collection happens without installing agents or software on monitored devices
Supported Devices

Not limited to routers

Any device with a cellular interface can be integrated and managed through the SIMSY platform.

Cellular Routers

Industrial and enterprise grade routers from InHand, Teltonika, Robustel, and more.

USB Modems & Dongles

USB cellular modems for adding connectivity to existing hardware.

M.2 & PCIe Modules

M.2 cellular modules and PCIe cards for embedded integration.

Hat Modules

Raspberry Pi and similar SBC hat modules for development and edge compute.

Edge Compute Devices

NVIDIA, Rockchip, and other edge compute platforms with cellular interfaces.

Embedded Modems

Custom hardware with embedded cellular modems. Any device with a cellular interface.

Integrated Hardware Platforms
InHand
Teltonika
Raspberry PiRaspberry Pi
NVIDIANVIDIA
Rockchip
HuaweiHuawei
Robustel

The platform can be extended to support any device with a cellular interface. If your hardware is not listed, talk to us.

Getting Started

From conversation to connected in days

01

Talk to us

We will help you assess your requirements and determine the right connectivity and hardware approach for your deployment.

02

Register and configure

Register your devices on the SIMSY platform and define your configuration policies, security settings, and provisioning rules.

03

Deploy connectivity

Deploy via physical SIM, eSIM, or over-the-air provisioning. Devices connect and pull configuration automatically. LAN devices discovered within 60 seconds.

04

Monitor and manage

Real-time visibility, remote access, automated alerting, and compliance evidence, all available from day one.

Tell us about your connected devices. We'll show you how SIMSY can simplify deployment, strengthen security, and reduce cost.

Start the conversation Request a trial SIM