XTEND - Critical Communications and Public Safety

Global solution

SEE offers you a complete set of solutions to extend the continuity of your indoor radio coverage service. Thanks to our integratable and scalable modules, we provide you with a solution that is adapted to your specific requirements.

An adaptable solution for :

  • Small facilities and short distance tunnels – RF/RF

  • Long distance tunnels – RF/FO



  • Control
  • Performance
  • Flexibility
  • Adaptability

Selective Master Repeater/Rack System

  • Scalability
  • Reduced space requirement 
  • Flexible integration
  • Selectivity
  • Software control
  • Specificity

Amplifiers Broadband/Slaves Rack System

  • Extended evolutionary capacity 
  • Reduced space requirement
  • Flexibility of integration
  • Maintainability
  • Software control

Optical RF Rack from 1 to 8 channels Duplex/Optical Master Unit

  • Modular and scalable
  • Use of fibre optic cable
  • Local and remote monitoring

Continuity Control Card

  • Monitoring the condition of the cable and abutment box
  • Power management of emulators Remote GPS
  • Management of the 4 independent channels

Abutment Box of Radiating Cables

  • No external power supply
  • Robust construction
  • Compact design
  • No external power supply
  • Communication card
  • Integrated load 50 Ohms/0.5W
  • Carrying forward reports

FM/DAB Emergency Audio Messaging Insertion Module

  • Expertise
  • Scalable and redundant solution
  • Simplicity of control
  • Digital processing

Indoor GPS Emulator

  • Smooth transition
  • Compatibility
  • Plug & Play solution
  • Performance

UC SELECT Control/Command Interface Supervision

  • Supervision web page
  • Web page for inserting emergency messages
  • Web page for message management and configuration
  • Several serial communication ports
  • Remote monitoring of the status of all the rack cards
  • Communication with the BMS in BUS/TCP mode
  • 4 opto isolated inputs
  • 4 dry contact outputs
  • Integrated Stereo Sound Inputs/Outputs

Bi-directional radiating cable coupler for secondary covers

  • Emergency exits
  •  Technical rooms
  • Evacuation galleries



Radio coverage studies & measures


Project management


Installation support

Maintenance & commissioning

Network integration & deployment


Contact us

If you have any questions !