Audience

Developers, VoIP providers and businesses building branded softphones, mobile VoIP apps and call-center applications.

About VaxVoIP SIP Phone SDK

VaxVoIP SIP Phone SDK helps developers build branded SIP softphones and VoIP applications for Windows, Android, iPhone, and iPad. It provides SIP signaling, media handling, and call-control APIs for voice and video, messaging, presence, multiple SIP accounts, and concurrent call lines. Features include conferencing, call hold, transfer and forwarding, WAV call recording, SIPREC client support, echo cancellation, jitter buffering, and answering-machine detection. Sample projects cover C#, VB.NET, WPF, Visual C++, Delphi, Java, Objective-C, and Swift, with platform-specific documentation. The SDK connects applications to standards-based SIP servers, IP-PBX systems, gateways, and telephony providers. Use cases include softphones, mobile VoIP apps, call-center tools, auto-dialers, and embedded business communications. A fully functional 30-day trial is available; annual licenses are sold separately for Windows, Android, and iOS.

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Pricing

Starting Price:
$2,640/year
Pricing Details:
Annual single-software licenses: Windows $2,640, Android $2,840, and iOS $2,860. Licenses include technical assistance, updates, new releases, maintenance, and issue resolution.
Free Trial:
Free Trial available.

Integrations

API:
Yes, VaxVoIP SIP Phone SDK offers API access
See Integrations

Ratings/Reviews

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Company Information

VaxSoft
Founded: 2004
Pakistan
www.vaxvoip.com/sip-phone-sdk

Videos and Screen Captures

Diagram with a central “VaxVoIP SIP PHONE SDK” panel connected in a circle to Windows, Visual Studio, C#, C++, Apple, Android, Swift, and D icons over a dotted world map.

Diagram with a central “VaxVoIP SIP PHONE SDK” panel connected in a circle to Windows, Visual Studio, C#, C++, Apple, Android, Swift, and D icons over a dotted world map.

Diagram with a central “VaxVoIP SIP PHONE SDK” panel connected in a circle to Windows, Visual Studio, C#, C++, Apple, Android, Swift, and D icons over a dotted world map. Diagram with a central “VaxVoIP SIP SDK” panel linked to icons for servers, devices, a phone browser window, audio waveform, and an AI headset over a dotted world map.
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Product Details

Platforms Supported
Windows
iPhone
iPad
Android
Training
Documentation
Support
Online

VaxVoIP SIP Phone SDK Frequently Asked Questions

Q: What kinds of users and organization types does VaxVoIP SIP Phone SDK work with?
Q: What languages does VaxVoIP SIP Phone SDK support in their product?
Q: What kind of support options does VaxVoIP SIP Phone SDK offer?
Q: What other applications or services does VaxVoIP SIP Phone SDK integrate with?
Q: Does VaxVoIP SIP Phone SDK have an API?
Q: Does VaxVoIP SIP Phone SDK have a mobile app?
Q: What type of training does VaxVoIP SIP Phone SDK provide?
Q: Does VaxVoIP SIP Phone SDK offer a free trial?
Q: How much does VaxVoIP SIP Phone SDK cost?

VaxVoIP SIP Phone SDK Product Features