Strata Underground Wi-Fi

Strata brings the same digital connectivity used above ground to underground environments with its comprehensively designed Wi-Fi. Robust access points installed underground create ’hot spots’ for digital voice calling, texting, tracking and even high-speed data access, all while using standard Wi-Fi-enabled devices.
person using wifi

Clear VoIP calling with push-to-talk functions provide private communication between personnel underground and between underground and surface operations. Any standard IEEE 802.11b/g/n Wi-Fi handheld phone, including regular cell phones, will operate on the Strata Wi-Fi network.

High speed data access underground
High speed data access underground
High-Speed Data Access

High bandwidth capabilities enable personnel to access and transmit digital documents on location underground.

  • Log daily performance data
  • Eliminate handwritten documents and timely note-taking
  • Annotate actual mine maps
  • Display service manuals, mine emergency information, mine maps
  • Text and email communication

This convenience will save time, minimize downtime, increase productivity and minimize guesswork. Any standard IEEE 802.11b/g/n Wi-Fi-enabled device is compatible, including smartphones, tablets, laptops and PDAs.


Strata Access Points (also known as A-Nodes) are installed along existing fiber-optic cables to provide untethered voice and data communications underground. In areas where fiber does not exist, A-Nodes are wirelessly connected along a wireless backbone of Strata B-Nodes. B-Nodes are installed at distances up to 4,000 feet (1,200 meters) apart and are capable of handling data speeds of up to 300Mbps. They eliminate the need for and expense of placing additional fiber-optic cable to gain extended coverage and connectivity within the mine. B-nodes can also be used both wholly and independently in mines without existing cable. 

The Strata Wi-Fi network is quick to deploy and easy to recover. It can be used as a standalone system underground, and is also ideal for communications during longwall moves and in temporary work areas.