• A Strategic Initiative to Advance America's Telecommunications Infrastructure

T-Mobile + TeleFortress

Mobile-Resilient SIP & Trusted Voice Over 5G Business Networks

T-Mobile + TeleFortress

T-Mobile for Business is transforming enterprise and public sector operations with nationwide 5G, private wireless, and fixed wireless access (FWA) solutions. TeleFortress complements this mobility fabric by delivering compliance-grade SIP trunking, STIR/SHAKEN call authentication, and E911-enabled routing, so your voice traffic remains trusted, signed, and sovereign, even at the network edge.

“T-Mobile powers the 5G connection. TeleFortress powers the voice integrity.”

TeleFortress

Why T-Mobile + TeleFortress?

SIP Trunking Over Fixed Wireless & Private 5G

  • Resilient SIP delivery over T-Mobile 5G Business Internet or ANS
  • Ideal for retail, logistics, healthcare, or multi-site UC deployments
  • Enables mobile fallback or primary SIP pathing when fiber isn’t available

STIR/SHAKEN Call Signing & CLI Trust

  • All outbound calls signed with Attestation A or B
  • Blocks spoofing, robocalls, and CLI flagging
  • CLI scoring and traceback metadata available via API

E911 + Mobile Dispatch Routing

  • Fully RAY BAUM’S Act and Kari’s Law compliant
  • Geo-aware DID registration for mobile or remote UC clients
  • Works with SIP endpoints connected via FWA or private LTE/5G

Voice-Ready for Distributed Edge Environments

  • Seamless integration with Microsoft Teams, Zoom, Genesys, Webex
  • Ideal for smart retail, telehealth, or mobile field service voice
  • Supports voice analytics, fraud prevention, and mobile UC

Ideal Use Cases

SIP trunking for remote sites and branch offices without fiber

Voice failover paths over 5G for contact centers and UCaaS providers

Smart logistics or IoT deployments needing E911 + CLI trust

Mobile-first retail stores and quick-service restaurants using UC

Public safety, field response, or healthcare mobility environments

Robotic hand with digital shield graphic
TeleFortress

Trusted Infrastructure for Mobile Voice

FCC-licensed voice carrier

STIR/SHAKEN attestation authority with CLI trust control

TLS/SRTP encrypted SIP trunking over 5G/FWA access

Emergency calling, DID provisioning, CNAM branding

Fraud prevention, short-duration monitoring, TCPA-compliant call metadata

Connect via SIP from any T-Mobile-served U.S. market with SLA options available.

Nationwide 5G + SIP Coverage

TeleFortress’s SIP infrastructure is compatible with:

Start Your TeleFortress + T-Mobile Voice Deployment

Request a mobility-to-SIP design consult or compliance-ready interop plan