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Products

Discover how our products can revolutionize the way you communicate and collaborate.

Voice

Explore our advanced voice solutions designed to optimize your communication workflows.

Diverse range of DID number solutions designed to enhance your communication capabilities.

Experience unparalleled communication efficiency with our advanced SIP Trunking Solutions.

Cutting-edge technology to proactively detect and neutralize spam flags on your DID Numbers.

Enable your customers to connect with your business by dialing a toll-free number.

AI voice agents that handle calls, capture leads, and provide customer support automatically, anytime.
Messaging

Wherever your audience is, our platform ensures seamless messaging across diverse channels.

Build customer journeys by fostering interactive conversations, all within the framework of your app. 

Connect with your audience in a simple and effective way through our cutting-edge SMS platform. 

BYOC

Harness the power of IDT as your chosen carrier while leveraging your platform’s advanced features and services.

Learn more

Integrate Twilio with our robust carrier routing platform to achieve unparalleled Voice termination system.

Experience reliable and high-quality communication services while leveraging the advanced capabilities of Genesys. 

Integrate IDT with the collaborative strength of MS Teams, unlocking efficient and feature-rich communication. 

Experience the power of our carrier network seamlessly connected to Plivo through our cutting-edge BYOC solution. 

Tools

Experience the power of our online voice tools, designed to simplify communication management. 

Learn more

Ensure the authenticity and integrity of outbound calls with our STIR/SHAKEN Verification Check tool. 

User-friendly tool to verify the reputation of your business number, ensuring that it remains trusted. 

Compare and gain insights into outbound call expenses, optimize budget, and make informed decisions. 

Easily estimate and compare the costs associated with different DID numbers providers. 

Compare inbound VoIP rates among top CPaaS providers and optimize your inbound call costs. 

Generate custom SMS templates. 

Solutions

Array of comprehensive and innovative offerings tailored to address your unique business challenges.

Learn more
Over the Top App. (OTTs)
SIP Trunking Providers
Local Exchange Carrier
Calling Cards / Pinless Operators
Financial Services
Sales & Marketing
MVNO
Collections
Inmate Calling
BPO / Call Center
Cloud PBX
UCAAS / CPAAS
Voice Wholesalers
Resources

Empower yourself with the resources you need to thrive in the dynamic landscape of communication.

Articles covering a wide range of topics.

Discover our video guides.

Get answers to common queries.

Find instructions to make the most of our products.

Stay informed with today's most important news stories

Discover telecom insights and trends.

Find definitions of popular telecom terms.

Discover the upcoming events on our calendar
Company

A global telecom partner built to meet your needs. 

Discover the story behind our commitment to delivering innovative solutions to connect people and businesses worldwide. 

Learn about our robust network infrastructure that spans across the globe, ensuring reliable and secure connectivity. 

Got a question, feedback, or need assistance? Our dedicated team is here to help!

Find partners or sign up for partnership programs.

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Contact us
NYSE: IDT
Wholesale Voice Termination

Carrier-grade , from your global telecom partner.

1,000+ CLI routes across 200+ countries. Platinum, Gold, and Instant quality tiers. Powered by IDT — one of the world’s largest wholesale voice carriers since 1990.

Try & Get a $25 Credit
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✓ 20,000+ Partners

✓ 99.99% Uptime SLA

✓ NYSE-listed IDT Corp

Live Network Status
All systems operational
1,000+
CLI Routes
200+
Countries
99.99%
Uptime
<3s
Avg PDD (Platinum)
Route Quality Tiers
Platinum
Highest quality
Gold
Balanced
Instant
Lowest cost
Years Carrier Experience
0 +
CLI-Certified Routes
0 +
Countries Covered
0 +
Wholesale Partners
1 K+
The fundamentals

What is voice termination?

Voice termination is the process of routing a telephone call from its origin to its final destination — the moment a call is “terminated” at the receiving end. In modern VoIP infrastructure, this happens over the internet via SIP (Session Initiation Protocol), replacing legacy copper circuits.

Wholesale voice termination providers own direct interconnects with local carriers in each country — meaning calls arrive faster, cleaner, and at significantly lower cost than routing through intermediary providers.

IDT Express is a subsidiary of IDT Corporation (NYSE: IDT), one of the world’s largest wholesale voice carriers with over 25 years of experience. When you use IDT Express, you access the same carrier infrastructure that major CPaaS platforms rely on — without the retail markup. This makes IDT Express ideal for SIP trunking, AI voice agents, and BYOC deployments.

How a call is terminated
1
Your Application / PBX
SIP INVITE sent via UDP / TCP / TLS
2
IDT Express Routing Engine
Route selected in milliseconds — quality tier, destination, health
3
Direct Carrier Interconnect
IDT's tier-1 connection in destination country
✓
Call Terminated — Connected
CDR logged instantly — visible in your portal via API
Choose your quality

Three tiers — pay for what you need.

Not all voice traffic is equal. A customer support line has different needs than a bulk dialer. IDT Express offers three termination tiers so you never overpay.
Most Popular

Platinum

For customer-facing calls, contact centres, and AI voice agents that demand perfection.
Best for AI Voice Agents & Enterprise
  • G.711 uncompressed audio
  • Post-dial delay < 3 seconds globally
  • Full CLI pass-through
  • STIR/SHAKEN Attestation Level A
  • Direct tier-1 carrier interconnects
  • Ideal for AI voice agent workloads
Try & Get a $25 Credit

Gold

Premium quality at competitive rates — the sweet spot for standard business traffic.
Best for Call Centres & B2B
  • G.711 / G.729 codec options
  • Post-dial delay < 5 seconds
  • Full CLI pass-through
  • STIR/SHAKEN Attestation A/B
  • Broad carrier pool for competitive pricing
  • Ideal for call centres & B2B
Get started

IDT Instant

Maximum volume at minimum cost — for bulk outbound dialers and price-sensitive traffic.
Best for Bulk Dialers & UCaaS
  • G.729 optimised codec
  • Post-dial delay < 7 seconds
  • Full CLI pass-through
  • STIR/SHAKEN Attestation B/C
  • Broadest carrier pool = lowest rates
  • Ideal for high-volume dialers
Get started
Who it's for

Voice termination for every use case.

IDT Express offers A-Z Voice Termination plans with 3 standard routing and quality options that meet a variety of needs. Each option is designed to be economical, competitive, and reliable. We also have many customization options available for customers with unique voice requirements.
Platinum

AI Voice Agents

LLM-powered voice agents (Vapi, Bland AI, Retell AI) demand ultra-low latency and G.711 uncompressed audio. Compressed codecs degrade transcription accuracy. Our Platinum routes are the carrier infrastructure of choice for AI voice workloads — from 10 to 10,000+ concurrent calls.
Low latency
G.711 audio
High concurrency
AI Voice Agent platform →
Platinum / Gold

Contact Centres & Call Centres

Inbound and outbound contact centre traffic needs reliable CLI delivery, consistent audio quality, and the ability to burst to thousands of simultaneous calls. IDT Express Platinum and Gold routes handle enterprise contact centre volumes with full STIR/SHAKEN signing to protect answer rates.
Elastic channels
STIR/SHAKEN
CLI delivery
SIP Trunking for contact centres →
Gold / Instant

AI Voice Agents

High-volume outbound campaigns — lead gen, collections, notifications — need maximum concurrent capacity at minimum per-minute cost. IDT Express Instant routes offer the broadest carrier pool and the lowest wholesale rates, with full CLI and automatic STIR/SHAKEN signing.
Lowest rates
Maximum volume
Full CLI
Wholesale voice termination rates →
All Tiers

CPaaS & Telecom Resellers

Build your own CPaaS platform or resell wholesale voice minutes to your customers. IDT Express provides white-label-ready voice termination with API-first access, real-time CDRs, and per-minute billing. Reseller pricing available at volume — contact our wholesale team.
API-first
Real-time CDRs
Reseller pricing
Talk to our wholesale team →
Platinum / Gold

BYOC — Cut Platform Costs

Already on Twilio, Genesys, or Microsoft Teams? Bring Your Own Carrier and replace their default termination with IDT Express wholesale routes. Keep 100% of your platform's features and cut per-minute voice costs by 30–60%. Setup in under 10 minutes.
30–60% savings
No migration
10 min setup
Explore BYOC options →
All Tiers

International Businesses

Businesses with customers in multiple countries need local presence without local offices. Pair IDT Express voice termination with DID numbers in 140+ countries — give customers a local number to call while your team handles everything centrally.
140+ countries
Local DID numbers
Single API
View DID numbers →
Wholesale Voice Termination

Compatible with every major platform.

IDT Express voice termination integrates natively with every major PBX, CPaaS, UCaaS, and AI voice platform. If it speaks SIP, it works with IDT Express.
CPaaS Platforms (BYOC).
T

Twillo

BYOC
G

Genesys Cloud

BYOC
M

Microsoft Teams

Direct Routing
A

Amazon Chime

BYOC
AI Voice Platforms
V

Vapi

B

Bland AI

R

Retell AI

E

ElevenLabs

SIP

Custom SIP

PBX & Softswitches
3

3CX

★

Asterisk

F

FreePBX

C

Cisco CUCM

A

Avaya

K

Kamailio

Network coverage

A-Z termination — any destination, worldwide.

A-Z voice termination means coverage to every destination globally — from major tier-1 markets to the most remote countries. IDT Express owns direct local interconnects in 60+ core markets.

200+ Countries & Territories
Worldwide A-Z coverage including all major markets — US, UK, DE, FR, IN, BR, AU, and 190+ more.
Direct Tier-1 Interconnects in 60+ Countries
No middlemen. Direct carrier relationships mean better quality and lower cost passed to you. See DID numbers available →
Real-Time Rate Deck — Updated Daily
Live per-minute rates for every destination in your portal. Always current — no stale rate sheets.
Live carrier nodes
200+
Countries covered with A-Z termination
Why IDT Express

What makes us different.

25 years of wholesale carrier experience, direct interconnects, and infrastructure that scales from 1 to 10,000+ concurrent calls.

NYSE-Listed Parent Company

IDT Express is a subsidiary of IDT Corporation (NYSE: IDT) — a publicly listed, financially transparent company with 25+ years of carrier history. Stronger E-E-A-T signal than any VC-backed startup.
 

Direct Carrier Interconnects

IDT owns direct interconnects with tier-1 carriers in 60+ countries. Unlike resellers, there are fewer hops, better quality, and lower costs passed directly to you.
 

Built for AI Voice Agents

Platinum routes deliver ultra-low latency and G.711 uncompressed audio — essential for AI voice agent platforms like Vapi, Bland AI, and Retell AI. Concurrency from 10 to 10,000+ calls.
 

BYOC for Any Platform

Already on Twilio, Genesys, or Teams? Use IDT Express via BYOC and cut your voice costs 30–60% without migrating your platform.
 

Real-Time Portal & API

Manage rates, routes, CDRs, and billing through a single dashboard or REST API. Full programmatic access — no account manager needed for daily operations.
 

STIR/SHAKEN Compliant

All outbound voice is STIR/SHAKEN signed — protecting your numbers from spam labelling and improving answer rates on customer communications.
Already on Twilio, Genesys, or Teams?

Cut your voice bill by 30–60% with BYOC.

Plug IDT Express carrier-grade termination into your existing platform. No migration. No downtime. Setup in under 10 minutes. Learn how BYOC works →

Start 14-day free trial
Get started

Up and running in 4 steps.

No contract. No minimums. Your SIP credentials are ready the moment you sign up.
1
Create Free Account

Sign up in under 60 seconds. No credit card required. Get $25 free credit instantly to test live calls.

2
Get SIP Credentials

Your SIP server address, username and password are available immediately in your portal dashboard.

3
Configure Your System

Add IDT Express as a SIP trunk in your softswitch, PBX, or AI platform. Setup guides for 3CX, Asterisk, Twilio & more.

4
Start Terminating

Make a live test call. CDRs appear in real time. Scale to any volume — channels are fully elastic.

Frequently Asked Questions

Need more help?
Can’t find the answer that you are looking for? Feel free to contact us.

What is Voice Termination?

Voice Termination is a wholesale VoIP service that allows businesses to route their outbound voice traffic through global networks to reach end destinations. With IDT Express, termination provides access to Tier‑1 interconnects, high-quality voice routes, and flexible routing and billing options, ensuring reliable and efficient call delivery for enterprises of all sizes.

What plans does IDT Express offer for Voice Termination?

IDT Express provides multiple plans to accommodate different business needs. The Platinum plan is designed for the highest-quality voice termination, offering Tier‑1 direct interconnects, DTMF support, CLI, ISUP signaling, and daily testing, ideal for local calling or specialized routing requirements. The Gold plan delivers strong quality of service at competitive rates, suited for calling card services, pinless calling, or inmate calling providers. IDT Instant provides market-based pricing with quality routing, making it a good fit for UCaaS, CPaaS, and cloud PBX providers. Additionally, IDT Express can build custom routing solutions for businesses with unique voice termination requirements.

How do I get started with IDT Express Voice Termination?

Businesses can start with a 14-day free trial that includes a $25 bonus credit without requiring a credit card. The onboarding process involves providing company information, contact details, and the switch IP, after which a regional sales manager assists with setup. This allows businesses to test the service and experience the platform before committing to a paid plan.

What features are available via the IDT Express portal?

The IDT Express portal offers full self-service control, including ordering and provisioning DIDs, updating IP addresses, and configuring routing options. Users can select local Points of Presence (POPs) to optimize routing based on geography, manage voice termination routes in real-time, and make changes instantly. The portal streamlines both configuration and monitoring, giving businesses the flexibility to manage their voice traffic efficiently.

Which types of businesses benefit most from IDT Express Voice Termination?

IDT Express is suited for wholesale VoIP providers that require large-scale, high-capacity outbound termination, UCaaS and CPaaS companies seeking cost-effective and reliable routing, and calling card or pinless services that need stable, high-quality connections. It also supports businesses that require DIDs combined with voice termination, enabling unified management of communications through a single portal.

What are the billing and contract terms?

Rates for voice termination are billed per minute, with billing increments outlined in the rate notifications. IDT Express reserves the right to adjust rates or destination codes, generally taking effect immediately with notification. For services involving virtual DIDs, there is a minimum one-month service term with automatic monthly renewal until canceled. Fees such as setup, monthly recurring, and usage charges are billed in advance and may be prorated if applicable.

What support and reliability does IDT Express provide?

IDT Express offers 24/7 global support and dedicated account management to ensure businesses have continuous access to assistance whenever needed. Their global network of direct and exclusive routes provides high capacity and reliability for voice termination, allowing enterprises to manage large call volumes with confidence. Businesses can also configure routing, monitor traffic, and manage DIDs through the self-service portal, making it easier to maintain service quality and continuity.

Can I customize routing for specific destinations?

Yes. IDT Express allows customers to configure custom routing for specific countries, regions, or destinations. This includes selecting preferred carriers, prioritizing Tier‑1 routes, and applying least-cost routing rules. Custom routing can help optimize call quality, reduce costs, and meet regulatory or SLA requirements in different markets.

What happens if I exceed my expected call volume?

IDT Express can accommodate scaling needs. If traffic exceeds planned volumes, the platform automatically manages excess traffic using available routes to maintain call quality. Customers can also work with account managers to expand capacity, adjust routing, or implement load balancing for high-volume campaigns.

Why should I choose IDT Express over other termination providers?

IDT Express combines a global network of direct and exclusive routes with real-time self-service control, flexible pricing, and strong technical support. Customers benefit from high-quality call delivery, extensive routing options, and the ability to manage both DIDs and voice termination in a unified portal. The platform is designed for scalability, reliability, and regulatory compliance, making it a trusted choice for enterprises, service providers, and cloud communication companies.