+1 800.462.8694 U.S. | +1 770.937.9735 Worldwide

USA SIP Trunking

Find out why AVOXI is the top USA SIP trunk provider for business. Benefits include:

Activate USA SIP Trunking Fast
No Setup Fees, No Minimum Contracts
Amazing Call Quality and 99.999% Uptime
Outbound Dialing with Global Termination
Advanced Call Routing to Any Device Worldwide
Add, Remove, and Customize SIP Trunks Online
Local and Toll Free US SIP Trunk Numbers Available
Complete the Short Form for Complete Pricing Plans
Activate USA SIP Trunking Fast
No Setup Fees or Contracts
99.999% Uptime
Global Outbound Dialing
Inbound Call Routing Anywhere
Add, Remove, and Customize SIP Trunks Online
Complete the Short Form and Receive Complete Pricing Plans
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Try the Best USA SIP Trunk Service Risk-Free

USA SIP trunking connects you to AVOXI's global VoIP network, reducing your call costs and ensuring top voice quality worldwide. The benefits of choosing AVOXI as your US SIP trunk provider include:

  • Toll free and local USA SIP trunk DIDs start at just $4.49.
  • Instantly make outbound calls to any location worldwide.
  • Forward inbound calls anywhere with advanced routing rules.
  • Buy and manage US SIP trunks online anytime, anywhere.
  • Earn $25-$1,000 in credit for every number you transfer to AVOXI.
  • No setup fees or minimum contracts. Try USA SIP trunking for 30 days risk-free.
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US SIP Trunks with Global VoIP Termination

  • Every US SIP trunking plan includes global outbound dialing.
  • Use your toll free or local DID numbers as your custom caller ID.
  • Establish controls on outbound dialing with call barring rules.
  • Instantly add, remove, and manage US SIP trunks online.
  • Every SIP DID number includes a free softphone.
  • Designate SIP trunk servers from our US or Hong Kong centers.
  • Complete the short quote form to view complete SIP termination rates.

Every US SIP Trunk Plan Includes Advanced Inbound Routing

  • Create unlimited call groups with custom handling rules.
  • Enjoy 15 days of free call recording or set up extended plans.
  • Update your IVR menus and personalized greetings anytime from your Online User Interface.
  • Customize SIP forwarding rules like time-based routing, simultaneous ringing, find-me-follow-me and more.
  • Advanced routing, voicemail services, detailed analytics, and many more features automatically included at no extra cost.
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Expect the Best from Your USA SIP Trunk Provider

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  • Enjoy 99.999% uptime and amazing call quality worldwide. 
  • Host unlimited call conference rooms with up to 500 participants.
  • Every SIP plan includes access to 24/7 technical support. 
  • Instantly activate SIP numbers in the US and 140+ other countries.
  • No setup fees. No minimum contracts. Port your numbers anytime. 

Why So Many Companies Choose AVOXI

Cutting Costs (8)

Reduced Cost

Cut your communications cost up to 50% with flexible USA SIP trunking services.

Global Redundancy (12)

Global Redundancy

Data centers across the US, Africa, and Asia provide SIP failover for maximum uptime.

Customer Focus (7)

Customer Focus

Every AVOXI customer has access to 24/7 support a dedicated account manager.

Crystal Clear Call Quality (5)

Amazing Call Quality

Flexible SIP server locations help AVOXI deliver amazing call quality worldwide.

Fast Deployment

Fast Deployment

Setting up SIP trunking in the US or anywhere else worldwide is quick and easy.

Scalability&Flexibility (6)

Flexible & Scalable

Instantly manage as many as 480 channels per trunk as your business grows.

Find Out How Much You Can Save with USA SIP Trunking Service Today

 How to Set Up USA SIP Trunking Today

If you simply need a USA SIP DID for inbound call management and standard outbound calling, you can set up service online by securing a number in the Online Shopping Cart. To get custom pricing or detailed SIP termination rates in the USA and around the world, contact us today!

1. Get Custom Pricing

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Get Custom Pricing


Complete the short quote form to view our complete table of SIP termination rates or to receive a custom pricing plan. For questions about our service, use this form or simply contact us today by phone.

Complete the short quote form to view our complete table of SIP termination rates or to receive a custom pricing plan.

2. Buy US SIP Trunks Online

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Purchase Online


Buy USA SIP DID numbers online now. Standard outbound calling features are automatically included. You can buy SIP trunks for your DID numbers anytime from your Online Interface.

Buy USA SIP DID numbers online now. Standard outbound calling features are automatically included. You can buy SIP trunks for your DID numbers anytime from your Online Interface.

3. Contact AVOXI Directly

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Call AVOXI from


 US/Canada: 1 800 394 1980
 Australia: 1 800 834558
 Hong Kong: +852 30114974
 Worldwide: +1 (770) 937-9735
 US/Canada: 1 800 394 1980
 Australia: 1 800 834558
 United Kingdom: 0800 652 5029
 Hong Kong: +852 30114974
 Germany: 0800 000 0476
 South Africa: 080 098 1340
Virtual Mexico Phone Number Mexico: 01 800 099 1204
 Worldwide: +1 (770) 937-9735

USA SIP Trunk Numbers Available from Every City

AVOXI makes it quick and easy to find the DID number you’re looking for. Popular dial-codes include:

Toll Free  |  Atlanta  |  Dallas  |  Denver  |  Detroit  |  Houston  |  Los Angeles  |  Miami  |  New York  |  Seattle

Need Help Finding the Right Number?

Frequently Asked Questions

How long does it take to get USA SIP DID numbers?

AVOXI provides USA SIP numbers in 24 - 48 hours or less. In most cases, your number is activated the following business day.

I already have a USA SIP trunk number, but I want to save money with AVOXI. What can I do?

To reduce call costs or use our service with an existing number, simply transfer your number to AVOXI. Transferring USA SIP numbers is quick, easy, and free with AVOXI.

Can I make outbound calls from a USA SIP DID number without adding additional trunks?

Yes, we include outbound calling and custom caller ID with any plan.

How else can AVOXI help my business?

In addition to best USA SIP trunking plans on the market, popular services from AVOXI include:

  • International Call Forwarding Service
  • Cloud Contact Center Solutions

Have Questions About USA SIP Trunk Services?

We're here to help. Contact AVOXI today with questions about US SIP trunking or to learn more about global VoIP calling.