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SIP Trunking

Build your VoIP system on a private, multi-cloud network in minutes with global SIP Trunking from Telnyx.

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ABOUT

SIP Trunking built for unlimited global scale

Easily scale your voice services on demand to meet your business needs. Deploy SIP trunking in just a few clicks through our intuitive portal, and add advanced features through flexible apis.

Our private, multi-cloud network ensures reliable call quality, real-time insights, and secure connectivity — plus you get competitive pay-as-you-go pricing and 24/7 expert support.

FEATURES

SIP trunking features, built for power users

Feature-rich voice to deliver mission-critical communications.

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    HD voice

    Leverage wideband codecs like AMR-WB to deliver higher quality audio to power crystal clear conversation.

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    Emergency calling

    Stay in compliance with Kari's Law and the Ray Baum Act by adding an address for in-plan calls to E911 numbers and automated routing to the nearest PSAP.

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    Detailed debugging

    Intuitive debugging tools are available to all users in our portal, so you can troubleshoot your calls with full visibility.

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    Voice call recording

    Easily enable automatic call recording by number or connection, with configurable formats and cloud storage.

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    Custom voice routing

    Choose a routing scheme per number for ultimate quality, lowest cost or specialized traffic types.

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    Inbound call screening

    Filter out unwanted calls and maintain the integrity of your voice communications channels.

Benefits

Get started quickly

The Mission Control Portal makes it easy to search and buy your phone number and create your first SIP trunk. If you need help, in-app support is live 24/7/365.

<5

Minutes to sign up and start talking

Secure, high-quality voice

Our private, multi-cloud network means your voice media runs on a private backbone—away from the congested public internet—to deliver enhanced voice quality and security.

15+

multi-cloud points of presence

Take control of your calls

Our integrations with Microsoft Teams, Zoom, Genesys and more allow Telnyx users to benefit from high-quality cost-effective voice on leading UC platforms.

BYOC

to your favorite platforms

Scale with ease

Respond to demand instantly by adding or removing SIP trunks in seconds with our APIs. Automate number porting and provisioning to enter new markets quickly.

APIs

for global scale

HOW IT WORKS
1/4
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RESOURCES

Start building

Setup SIP connections in minutes.

curl -X POST \
  --header "Content-Type: application/json" \
  --header "Accept: application/json" \
  --header "Authorization: Bearer YOUR_API_KEY" \
  --data '{"connection_name": "Test Connection", "user_name": "MyUser", "password":"my123secure456password789"}' \
  https://api.telnyx.com/v2/credential_connections
  • Icon Resources Coding Tutorial

    SIP trunk setup

    Take a look at how to get started with our SIP Trunking APIs. Configure your connections as needed and start making and receiving calls globally in minutes.

    Explore docs
  • Icon Resources Article

    Telnyx ranked in G2's 2025 Best Software Awards

    Recognized for our powerful APIs, private global network, and unmatched customer support, we continue to set the standard for high-performance, developer-friendly communications solutions.

    Learn why
  • Icon Resources Article

    How to switch from the PSTN to VoIP

    Future-proof your business communications by switching from the PSTN to cloud communications in 6 easy steps.

    Read article
PRICING

See our SIP trunking pricing

Telnyx customers only pay for what they use, and typically save 30% over other CPaaS providers. Lower list pricing and automatic volume discounts are built in as you scale.

Starting at:

$0.0035

Per minute
See pricing
SOLUTIONS

Build what you need with flexible voice

CUSTOMER STORIES
Customers save up to 98% of their original telephony bill by switching to Telnyx.
Customer Quote Wille Howe Technology

Willie Howe

Business Owner

Read customer story

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FAQ

SIP trunking, put simply, is a means of operating phone systems over the internet, instead of using a traditional phone line. Learn more about how SIP trunking can transform your business communications on our Resource Center.

SIP trunking, put simply, is a means of operating phone systems over the internet, instead of using a traditional phone line. Learn more about how SIP trunking can transform your business communications on our Resource Center.

Resources, Docs, Support

Sip Trunks hub

Find tips, best practices, and guides for Sip Trunks

  • Article icon

    SIP Trunking | Telnyx

    Instantly scale voice connections with Elastic SIP Trunking. Experience low-latency, jitter-free calling with no packet loss on our private Tier-1 network.

    Read more
  • Article icon

    Get Started with Telnyx SIP Trunking | Telnyx

    Telnyx's SIP Trunking Getting Started guide provides all the information you need to get started with SIP trunking. In this guide, you'll learn how to create a Telnyx account, configure your devices, and make calls with SIP trunking.

    Read more
  • Article icon

    SIP Quickstart | Telnyx

    Telnyx's Developer Portal is the best place to start if you're looking to create a voice application. In this quickstart, you'll learn how to create a new portal and configure your SIP trunking settings.

    Read more
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    SIP Trunking Configuration Guides | Telnyx

    Telnyx's SIP trunking guide will help you configure your sip devices for use with our service.

    Read more
  • Article icon

    Account Setup | Telnyx

    Outlines the process of setting up a Telnyx account.

    Read more
  • Article icon

    List connections API | Telnyx

    Returns a list of your connections irrespective of type.

    Read more
  • Article icon

    Create a credential connection API | Telnyx

    Creates a credential connection.

    Read more
  • Article icon

    List available phone numbers API | Telnyx

    List available phone numbers

    Read more
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    Retrieve a phone number with voice settings API | Telnyx

    Retrieve a phone number with voice settings

    Read more
  • Article icon

    Get all outbound voice profiles API | Telnyx

    Get all outbound voice profiles belonging to the user that match the given filters.

    Read more
  • Article icon

    Telnyx Blog | CPaas & UCaaS Resources

    Find data-driven research, comprehensive guides and all things SIP trunking, voice and SMS APIs, wireless and more.

    Read more
  • Article icon

    What is SIP Trunking? Session Initiation Protocol Explained

    This SIP Trunking 101 guide will tell you everything there is to know about SIP Trunking, and how to start improving your communications today.

    Read more
  • Article icon

    SIP trunking architecture: What is it, and how does it work?

    Learn how SIP trunking architecture works so your business can experience advanced communications and connectivity.

    Read more
  • Article icon

    Setting up a SIP trunk — A step-by-step guide - Telnyx

    Learn how to set up a SIP Trunk in a matter of minutes with Telnyx today.

    Read more
  • Article icon

    Everything You Need To Know About Call Origination

    Learn about call origination with Telnyx: what it is, how it works, and what to look for in a provider.

    Read more
  • Article icon

    SIP Trunk vs PRI | The Clear Winner for Your Business

    SIP Trunk vs PRI: Get a complete breakdown of the difference between primary rate interface and session initiation protocol and which is best for business.

    Read more
  • Article icon

    SIP vs VoIP — Breaking down the key differences - Telnyx

    SIP vs VoIP. While VoIP refers to any internet-based phone service, SIP Trunking refers to a communication protocol that is used for most VoIP.

    Read more
  • Article icon

    Telnyx vs. Twilio for Elastic SIP Trunking Comparison

    Telnyx and Twilio are both popular providers for Elastic SIP Trunking services, but their products differ in some fundamental ways.

    Read more
  • Article icon

    Understanding Inbound SIP Trunking for Your Business [2021]

    Understanding inbound and outbound SIP trunking for your business. Pay for the features you need while scaling your call capabilities.

    Read more
  • Article icon

    SIP meaning: common terms and definitions

    Ever wondered about the origin or meaning of particular SIP terms, acronyms or buzzwords? We shed some light in this blog post.

    Read more
  • Article icon

    The Better Twilio Alternative - Telnyx

    Switch to Telnyx for a better Twilio alternative. Benefit from our competitive pricing, private global network, and award-winning support.

    Read more
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    The best Bandwidth alternative - Telnyx

    Looking for a Bandwidth alternative? Compare Telnyx vs. Bandwidth on reliability, pricing, and support. See why Telnyx is the top choice.

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  • Article icon

    How to Configure a SIP Trunk | Telnyx Help Center

    Step-by-step guide on setting up a SIP Trunk with Telnyx using a compatible soft phone or system.

    Read more
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    Telnyx SIP Trunking Configurations | Telnyx Help Center

    Use Telnyx as your voice carrier with the compatible soft phone or pbx of your choice.

    Read more
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    SIP protocols that Telnyx uses | Telnyx Help Center

    Wondering what SIP transport protocols are used at Telnyx? Find out more here.

    Read more
  • Article icon

    SIP Connection | Telnyx Help Center

    Guide to SIP connections: AnchorSite® settings, IP authentication, and SIP URI calls.

    Read more
  • Article icon

    SIP Connection: Number Formats | Telnyx Help Center

    Here we will talk about SIP connections and ANI/DNIS number format control!

    Read more
  • Article icon

    Inbound/Outbound Voice | Telnyx Help Center

    Inbound/Outbound Voice configuration guideline materials. Start building on Telnyx today.

    Read more
  • Article icon

    Migrate To Telnyx From An Existing SIP-Enabled Platform

    Bring Your Own Carrier To Telnyx & save money while improving call quality, reporting, & scalability. Works with Twilio, Plivo, Vodia, Elastix, 3CX & More.

    Read more
  • Article icon

    VoIP for Small Business | Top Rated VoIP Solution

    Find out what makes Telnyx the best VoIP provider, and find the perfect plan for your small business.

    Read more