Bring Your SIP Trunk & Numbers to Yeastar

Seamlessly connect your existing SIP trunks and phone numbers to Yeastar Phone System. Reduce costs, simplify migration, and keep your communication uninterrupted.

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Flexibility that Adapts to Your Carriers and Business

Yeastar gives you a full-featured UC platform—cloud, hardware, or software—that easily connects with the trunks and numbers you already use. Migrate on your own timeline, keep your current workflows intact, and manage everything from one simple interface.

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Own Your Trunk & Numbers

Keep full ownership of your SIP trunks and numbers. Switch systems without switching carriers, keep long-held numbers, and migrate to Yeastar at your own pace — no lock-ins, no forced bundles.

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Reduce Calling Costs on Your Terms

Continue using the call plans you’ve already negotiated with your providers. Avoid rigid per-user bundles or “all-in” packages that don’t match your real usage, and optimize costs based on actual usage.

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Broad Compatibility with Global ITSPs

Yeastar works with 150+ SIP trunk providers worldwide, making it simple to plug your existing carriers into the system without complex setup.

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Connect Your SIP Trunks in Minutes

Yeastar provides a rich built-in SIP trunk templates to streamline your deployment. Simply select your provider, enter the trunk credentials, and our system handles the rest, no complex configuration required.

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Fast, Template-based Onboarding

Select your provider from built-in SIP trunk templates, enter your credentials, and the system handles the rest. No advanced configuration required.

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Straightforward Compatibility for ITSPs

If you are an ITSP and want your SIP trunk to appear as an official Yeastar template, the certification process is simple: complete a quick interoperability check and stay available for essential technical coordination.

Get Certified Here
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Centralized Trunk & Number Management for Service Providers

Manage your SIP trunks, DID numbers, and PBXs in one place with Yeastar Central Management. Monitor registration status, usage, and alerts across multiple systems, enable trunk sharing, and roll out STIR/SHAKEN implementation without logging in to each PBX one by one.

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All Your SIP Trunk Questions Answered

Can I keep my existing phone numbers?

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Yes. Yeastar fully supports number portability. You can keep your existing phone numbers and SIP trunks, migrate on your own schedule, and avoid the operational disruption or cost typically associated with number changes.

Is it complicated to set up my SIP trunk with Yeastar?

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No. Yeastar provides certified ITSP templates, auto-provisioning options, and guided configuration steps. Most SIP trunks can be connected with minimal adjustments.

As an ITSP, can our SIP trunk integrate with Yeastar?

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Yes. Yeastar collaborates with ITSPs globally to certify SIP trunk services for seamless compatibility with the P-Series PBX. Certification ensures optimal performance, formal compatibility, and a better experience for shared customers. Get certified here.

How do we join Yeastar as a service provider?

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You can join the Yeastar Channel Program for Service Providers.

This program allows ITSPs and telecom service providers to resell Yeastar PBX solutions, expand service offerings, and gain access to partner-exclusive resources and support.

Will moving my SIP trunk to Yeastar save money?

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In many cases, yes. Since you keep your existing calling plans, you avoid costly per-user bundles or rigid “all-in” packages.You gain full control over your traffic and can optimize costs based on real usage.

Is Yeastar compatible with our current devices?

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Yes. Yeastar’s PBX platform is designed to integrate smoothly with existing SIP trunks, desk phones, softphones, and UC workflows. Whether you deploy the system in the cloud, on hardware, or on your own server, Yeastar adapts to your current environment while enhancing manageability and flexibility.

What are the benefits to integrate with Yeastar?

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Becoming a Yeastar-certified SIP Trunk Provider gives your service official validation and greater visibility in the Yeastar ecosystem. Certified providers enjoy:

  • Recognized as a Yeastar-certified lTSP partners
  • Present in the drop-down list of pre-configured SlP trunks in Yeastar PBX systems (be the preferred choice of our channel partners & 650K+ end customers)
  • Be showcased on Yeastar official website while enhancing your branding visibility
  • Opportunities for regional and cross-regional services growth
  • Direct support from Yeastar for integration and marketing alignment

To access these benefits, you can submit an application now to become Yeastar ITSP partners.

Become a Yeastar-Certified SIP Trunk Provider

Not listed as a supported provider? Join our ITSP program, reach 650,000+ deployments and be the preferred choice for Yeastar users.

Apply Now