• A Strategic Initiative to Advance America's Telecommunications Infrastructure

Comcast Business + TeleFortress

SIP-Optimized Voice Over Nationwide DIA & Ethernet Infrastructure

Comcast Business + TeleFortress

Comcast Business provides one of the most widely available Ethernet, broadband, and DIA networks in the U.S., making it a powerful foundation for reliable, real-time SIP trunking at scale. TeleFortress pairs seamlessly with Comcast’s network to deliver STIR/SHAKEN-compliant voice, CLI protection, and E911 routing, transforming Comcast’s access into a fully compliant enterprise voice backbone.

“Comcast brings the reach. TeleFortress brings the regulatory trust.”

TeleFortress

Why Comcast Business + TeleFortress?

SIP Trunking Over Ethernet, DIA, or Coax

  • Deliver SIP from any Comcast Business location to TeleFortress SIP edge
  • Ideal for retail, healthcare, professional services, and SMBs
  • Supports UCaaS platforms, Microsoft Teams, Zoom, and more

Full STIR/SHAKEN Compliance

  • Every outbound call signed with Attestation A or B
  • Protects CLI trust, increases call answer rates, blocks spoofing
  • Includes metadata logs, scoring, and traceback capabilities

E911 Routing & Dispatch Support

  • Supports RAY BAUM’S Act + Kari’s Law mandates
  • DID-to-location mapping for dynamic or fixed business sites
  • Emergency call routing built for distributed retail and enterprise networks

Cost-Effective, Compliant Voice at Scale

  • Leverages Comcast’s last-mile reach with TeleFortress’s compliance engine
  • Ideal for SIP failover, voice consolidation, or PRI-to-SIP transitions
  • Enables secure call delivery even without dedicated fiber or MPLS

Ideal Use Cases

Multi-site retail voice deployments over Comcast Business

Healthcare offices, clinics, or labs requiring STIR/SHAKEN + E911

SMB and mid-market companies migrating to UCaaS with SIP trunking

VoIP + SIP handoffs over Comcast coax or Ethernet with compliance built-in

Backup SIP routing paths over Comcast DIA circuits

Robotic hand with digital shield graphic
TeleFortress

Trusted SIP for Comcast-Connected Sites

STIR/SHAKEN attestation authority + CLI scoring

TLS/SRTP encrypted SIP over broadband or Ethernet

RMD listed with emergency compliance

E911, DID routing, and CNAM support included

Works for SMBs, regional enterprises, and UCaaS providers across Comcast’s national footprint.

Nationwide Availability

TeleFortress voice is accessible from Comcast Business markets including:

Ready to Voice-Enable Your Comcast Business Network?

Request SIP provisioning, site qualification, or STIR/SHAKEN interop planning