Global SIP Trunking Service for Enterprise Reach and Reliability
Global SIP Trunking
Global SIP Trunking Service for Enterprise Reach and Reliability
Expand your reach with voice calling in over 150 countries with one trusted provider. AVOXI delivers enterprise-grade reliability, international coverage, and the flexibility of a cloud-native platform, making it ideal for modern telephony and evolving business communications.
- Access international markets without high costs
- Simplify global voice operations with a single provider
- Scale effortlessly with cloud-native communications platform
Trusted by Over 5,000 Global Brands
Global SIP trunk features
Unify your global voice strategy with scalable, secure session initiation protocol (SIP) trunking. AVOXI empowers enterprises with cloud-native flexibility, carrier-grade reliability, and unmatched international coverage.
Inbound and outbound calling
Reliable, high-quality calls in and out of over 150 countries with local caller ID and TrueLocal™ numbers
Number management and porting
Instant number provisioning, streamlined porting, and bulk forwarding configurations for global operations
Real-time monitoring and diagnostics
Advanced call routing, live SIP trunk diagnostics, and performance analytics to keep your systems optimized
SIP trunk security (TLS/SRTP)
End-to-end encryption with TLS/SRTP, fraud monitoring, and always-on global support
What is SIP trunking and how does it work?
SIP trunking is a cost-effective way for businesses to make and receive phone calls over the Internet instead of using traditional landlines or analog phone lines.
It connects your private branch exchange (PBX)—whether it’s on-premises or cloud-based—to the public switched telephone network (PSTN) through a SIP provider like AVOXI. This enables your business communications to scale effortlessly, support simultaneous calls, and route voice traffic efficiently across locations.
How SIP trunking works:
- Your business phone system converts voice into digital signals.
- These signals transmit over the Internet using the SIP protocol.
- A SIP provider like AVOXI routes the call to the destination using global PSTN access.
SIP trunking vs PSTN
Here’s a quick comparison to illustrate the core differences between modern SIP trunking and legacy PSTN systems:
- SIP trunking uses the Internet to transmit voice calls. It’s flexible, scalable, and cost-efficient.
- PSTN uses physical copper lines. It’s more rigid, with higher infrastructure costs and limited scalability.
The benefits of SIP trunking
Whether you’re expanding globally or optimizing your internal communications, SIP trunking delivers a range of advantages that make your voice strategy smarter and more scalable. Here are a few:
- Cost efficiency: Reduce costs by eliminating the on-prem hardware and per-line charges that come with traditional phone lines or ISDN.
- Global scalability: Instantly add SIP channels or numbers to meet fluctuating call volume.
- Improved call quality: See crystal-clear calls with local termination and caller ID.
- Centralized management: Use one platform to manage your entire communications system, from inbound calls and call recording to instant messaging and troubleshooting.
- Enhanced security: Secure your voice services with encryption and 24/7 threat detection.
Why choose AVOXI for SIP trunking?
Connect SIP trunking to any platform
AVOXI’s SIP trunking service supports global business operations and seamlessly integrates with the tools your team already relies on.
Teams around the world use AVOXI’s voice solutions to simplify workflows and scale smartly, from internal communications to customer support. It also integrates with the tools you already use, like Microsoft Teams, Genesys, Zoom, Twilio, and more.
International coverage you can count on
AVOXI offers the most extensive number coverage on the market. With it, you can instantly provision local, mobile, toll-free, and non-geographic DIDs in over 150 countries.
Real results from global teams
Thousands of businesses across finance, travel, SaaS, and BPO sectors choose AVOXI to power their voice infrastructure.
But don’t just take our word for it. Discover why thousands of enterprises trust AVOXI for global SIP trunking:
As someone working for a Contact Center as a Service (CCaaS) company, Avoxi has been a good partner on every stage of the project, since the initial onboarding to their support and Account Managers team. Highly recommended if you need voice solutions worldwide.
Oscar Orozco
Carrier Operations Engineer
AVOXI has helped us to grow our business across the globe. As we expand into new countries, we just get a new number from AVOXI. They make it simple and cost effective. Service is amazing. We highly recommend using them.
Brad Taylor
Executive / Owner
Great DID services. Very broad coverage with instant activation for most countries we need. Sound quality is high grade and prices are fair to use.
Ami Shalmon
CEO
AVOXI has a comprehensive system that allows for all your call center needs. Easy to work with, support is great. Great rapport with the product managers and support team to fix opportunities and create new innovations.
Vito Vicario
Software Implementation Administrator
SIP Trunking frequently asked questions
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