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Active Interception System

Man‑in‑the‑middle fake base‑station solution for GSM / WCDMA / LTE, delivering active interception, SMS & voice monitoring, identifier collection and target communication control for law‑enforcement intelligence operations.

Active Detection Fake Base Station IMSI/IMEI Capture
Active Interception System workflow diagram showing fake‑BTS man‑in‑middle logic, target mobile terminal, legitimate public BTS and operator control terminal signal interaction.

Overview

Active Interception System. This comprehensive interception and communication control system supports GSM, WCDMA and LTE cellular networks. Acting as a man‑in‑the‑middle fake base station, it attracts nearby mobile terminals, collects IMSI / IMEI identifiers, and enables real‑time voice and SMS interception, tampering and target communication management. Deployed for counter‑terrorism, criminal investigation and sensitive‑site security missions.

Work Principle

Man‑in‑the‑Middle Interception Workflow. The fake‑BTS module induces nearby mobile phones to camp onto its simulated cellular cell. The system acts as proxy between target handsets and legitimate public‑network base stations. Uplink and downlink voice/SMS traffic passes through the interception unit; built‑in decryption module handles GSM encrypted streams. Operators configure black‑and‑white lists, monitor intercepted content and issue control instructions from the operating control terminal.

Core Features

Multi‑Network Support Compatible with GSM, WCDMA, LTE; supports A5.1/A5.2/A5.3 encrypted GSM interception environment.
Blacklist & Whitelist Control Up to 64 targets for blacklist and whitelist separately; flexible attach/release working modes.
SMS & Voice Interception Multi‑channel interception, tampering and custom spoofed‑origin SMS transmission towards target devices.
IMSI / IMEI Gathering Captures mobile identifiers together with timestamp and RSSI metadata for intelligence analysis.
Target Communication Control Call filtering, forwarding, signal shielding and permitted‑call whitelist for managed target communications.
Wide Operational Coverage Typical effective coverage ≥1 km subject to local RF environment; supports target‑aided geolocation.

Specifications

Key Brief Parameters

  • Supported Networks: GSM / WCDMA / LTE; per‑channel transmit power configurable 1‑20 W
  • Antenna: Built‑in directional antenna, omnidirectional antenna optional; coverage 300‑500 m
  • Power Supply: AC 220 V; typical power consumption:100 W, varies with channel quantity
  • Supports auto‑boot / manual‑boot; hot‑modify cell parameters without system reboot
  • Full channel tables, channel capacity and detailed performance datasheet available upon request