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VaxVoIP Server SDK · Office #55,867

Build Windows SIP servers, IP-PBX, IVR and call centers

In the Building and consuming APIs neighborhood (Developer). In town since 30 Oct 2026.

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What Tablif read on VaxVoIP Server SDK's site

VaxVoIP Server SDK describes itself as: “SIP Server SDK for Windows | Build IP PBX and VoIP Apps”

What it is

Calls itself “SIP server”.

  • Calls itself: SIP server
“VaxVoIP is a developer SDK—not a hosted or ready-made SIP server—for building branded Windows SIP server, IP-PBX, IVR, call-center and auto-dialer software.”

Where it puts itself

Rules out “hosted or ready-made SIP server”.

  • Says it will not: hosted or ready-made SIP server
“VaxVoIP is a developer SDK—not a hosted or ready-made SIP server—for building branded Windows SIP server, IP-PBX, IVR, call-center and auto-dialer software.”

What it costs

Free for a trial period. Sales on request. No monthly or yearly plan. Prices quoted: $12,040, $4,680, $8,760.

  • Monthly: no
  • Yearly: no
  • Free plan: free for a trial
  • Price: $12,040 · $4,680 · $8,760
  • Contact sales: yes
“Three years $12,040 USD”
“One year $4,680 USD”
“Two years $8,760 USD”

Who it sells to

Sells to developers. Made for developer.

  • Sells to: developers
  • Made for: developer
“VaxVoIP is a developer SDK—not a hosted or ready-made SIP server—for building branded Windows SIP server, IP-PBX, IVR, call-center and auto-dialer software.”

How it runs

A desktop app for Windows. Can be self-hosted. Hosted in the cloud. Offers an API. AI is a side feature.

  • Kind: desktop
  • Runs on: Windows
  • Runs where: cloud / hosted · self-hosted
  • API: yes
  • AI role: a side feature
“Develop for Microsoft Windows Server and Desktop using C#, VB.NET, Visual C++ or Delphi sample projects.”
“The SIP Server SDK is designed for Microsoft Windows and supports Windows Server and Desktop versions.”

What it works with

Runs inside WebPhone SDK. Names Agent AI SDK, Microsoft Windows and 2 more on its pages.

  • Runs inside: WebPhone SDK
  • Names: Agent AI SDK · Microsoft Windows · SIP Phone SDK · +1
“Agent AI SDK Bridge SIP servers and IP-PBX systems with real-time AI.”
“Develop for Microsoft Windows Server and Desktop using C#, VB.NET, Visual C++ or Delphi sample projects.”

What it offers as proof

Live, no waitlist. Claims “22+ Years”. Try it without signing up. Publishes docs and a blog.

  • Number claimed: 22+ Years
  • Instant signup: yes
  • Trial asks for: nothing
“Download 30-Day Trial”
“Download SDK”

Sources

Tablif read these pages, last on 30 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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