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C9/VoIP

Voice Infrastructure // SIP Proxy

SIP Registration Proxy & Media Relay

Manage NAT traversal, secure topology hiding, and endpoint signaling across complex network boundaries—without rebuilding your edge.

Topology Hiding

Your internal network structure stays invisible to upstream carriers and endpoints.

NAT Traversal

Reliable signaling and media for endpoints behind any NAT or firewall configuration.

Centralized Registration

One proxy layer for thousands of endpoint registrations—cleanly managed.

Media Relay Options

Anchored or relayed media paths tuned for latency or privacy requirements.

Technical Core

Proxy Layer Specifications

Registration, relay, and security behavior of the proxy tier.

Registration Proxy

Endpoint registration aggregation with keep-alive management.

[MODE: REGISTRATION PROXY]
[KEEPALIVE: CRLF/OPTIONS]
[SCALE: 100K+ ENDPOINTS]

Media Relay

RTP relay and anchoring for hostile NAT environments.

[MEDIA: RELAY / ANCHORED]
[NAT: FULL-CONE SUPPORT]
[SRTP: TERMINATION]

Edge Security

Signaling scrubbing and rate control at the proxy boundary.

[SECURITY: TOPOLOGY HIDING]
[FLOOD: RATE-LIMITED]
[HEADERS: NORMALIZED]

Deployment Scenarios Verified

VERIFIED::ENGINEERING_LAB
  • Multi-site enterprise NAT
  • Carrier peering handoff
  • Hosted PBX multi-tenant
  • Remote endpoint fleets
  • SBC failover pairs

Scalable Wholesale Voice Without the Carrier Lock-in

Month-to-month flexibility, zero minimum commitments, and direct Level-3 engineering access on every account.