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C9/VoIP

Messaging & Fax // Cloud Fax

Secure Cloud Fax Without the Hardware

Reliable Email-to-Fax and Web-to-Fax capabilities. Send, receive, and archive secure facsimile documents digitally—no physical lines, no hardware maintenance.

Email-to-Fax

Send faxes from any mail client; receive them as PDF in your inbox.

Fax API Integration

Programmatic fax send/receive with delivery confirmation webhooks.

T.38 Reliability

True fax-over-IP protocol support—not best-effort G.711 passthrough hacks.

Digital Archival

Every facsimile stored, searchable, and exportable.

Technical Core

Fax Service Specifications

Protocol-level detail for document-critical workflows.

Transport

Standards-based fax over IP with fallback handling.

[PROTOCOL: T.38/FOIP]
[FALLBACK: G.711 PASS]
[ECM: ENABLED]

Formats & Delivery

Common document formats in, confirmed delivery out.

[FORMAT: PDF/TIFF]
[CONFIRM: WEBHOOK/EMAIL]
[RETRY: AUTOMATED]

Integration Paths

Plug fax into the systems you already run.

[INTEGRATION: API/SMTP]
[PORTAL: WEB-TO-FAX]
[ARCHIVE: SEARCHABLE]

Workflow Verification

VERIFIED::ENGINEERING_LAB
  • Email-to-Fax
  • Web-to-Fax
  • API send/receive
  • Delivery confirmation webhooks
  • Number porting for existing fax DIDs

Scalable Wholesale Voice Without the Carrier Lock-in

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