SIP Trunk India
Get Scalable SIP Trunking In India With AVOXI
Connect your Private Branch Exchange (PBX) to India’s voice network with global-quality uptime and local compliance. With AVOXI, SIP trunking is easy, scalable, and built to support modern business communication in India.
Reliable India SIP Trunking & Hosted Voice Solutions
Doing business in India? You need voice connectivity that’s fast to deploy, easy to manage, and fully compliant with local telecom laws.
Session Initiation Protocol (SIP) trunking and hosted voice solutions help businesses in India reduce costs, simplify telecom infrastructure, and scale operations without added complexity. Here's why it matters:
Cut Costs Without Cutting Quality
Replace expensive traditional phone lines with SIP trunks that let you pay only for the capacity you use. Eliminate per-line fees and reduce international call costs while improving call delivery and uptime.
Enjoy Built-In Flexibility
Spin channels up or down, expand to new locations, or reroute inbound calls instantly without new hardware or bandwidth constraints. SIP works with your existing PBX or unified communications (UC) platform so your team stays agile.
Stay Compliant in India
Meet India's regulatory needs with features like lawful intercept, local PSTN connectivity, and number provisioning. You stay focused on growth while your voice infrastructure stays secure and compliant.
Why Businesses Use AVOXI SIP Trunking in India
Global businesses choose AVOXI's cost-effective SIP trunking service because we make it easy to deploy voice in India, without the delays, restrictions, or red tape typically associated with telecom setups.
Here’s how we help you stay connected, compliant, and in control:
Voice Infrastructure Built for Scale
Get a high-performance SIP network that delivers uptime, reach, and crystal-clear voice quality—no matter where or how much you grow.
- Unlimited SIP channels to handle enterprise call volumes
- Local voice termination with India caller ID for trusted outbound call delivery
- High-quality routing to 150+ countries
- 99.995% uptime across Tier 4 data centers
- Automatic failover and zero-downtime upgrades (ZDU)
- Multi-ISP backbone for call continuity
Built-In Advanced Voice Features That Go Beyond the Basics
Enjoy enterprise-grade functionality, already included with no add-ons or extra fees.
- Call recording: Capture calls for training, compliance, or quality control
- Call analytics: Monitor performance with real-time usage and voice quality metrics
- VoIP API access: Integrate with CRM or support tools to automate workflows
- Global voice management platform: Control numbers, routing, and usage from one dashboard
Compliance-Ready Voice for India
Launch and operate SIP trunks in India that are fully compliant with local telecommunication laws.
- Built-in support for India’s PSTN and lawful intercept regulations
- Aligned with DoT/TRAI guidelines
- Local number provisioning with regulatory documentation
Full Control of Numbers & Routing
Provision, port, and route numbers across India on your terms, without carrier delays.
- Bulk provisioning with easy-to-use tools
- Advanced call routing by time, region, or business logic
- Interactive Voice Response (IVR) menus and auto attendant
- Voicemail transcription sent to your inbox
- Real-time dashboards for routing and call data
Seamless Integration with Your Existing Systems
Deploy voice services that work with your stack, not against it.
- Compatible with PBX, UCaaS, and CCaaS platforms like Microsoft Teams, 3CX, Avaya, Zoom, Cisco, and more
- Quick provisioning with no extra hardware required
- Bring Your Own Carrier (BYOC) support
- Keep your current workflows while upgrading reliability
Global Support & Onboarding
Get expert help when you need it from a team that understands global telecom and India’s local rules.
- 24/7 support via phone, email, and chat
- Guided onboarding for SIP and number setup
- Regulatory documentation and compliance checks
- Assistance across time zones and regions
Additional Resources
Cost Reduction
SIP Trunk Pricing Guide [Rate Comparisons]
Security
Best SIP Protocols for Secure Communications
Retain Phone Number
International
Number Porting
VoIP Quality
Troubleshooting Common SIP Issues
Voice Origination
Carrier-Quality Voice Origination Managed from an Intuitive Platform
Phone Number Management Simplified
Instantly provision phone numbers from 170+ countries, configure forwarding rules in bulk, and manage multiple carriers' numbers from one intuitive interface.
India DID Numbers Available for Any Need
AVOXI provides toll free, mobile, and local DID numbers in India. Port existing DID numbers to AVOXI for free, or keep your carrier with BYOC.
Advanced Call Routing & Tracking
Take caller experience to new levels with advanced call routing and analytics. Track call trends over time, monitor SIP trunk connections with Call Insights Dashboard, automatically upload call logs into your CRM or helpdesk, and more.
Buying Phone Numbers in Bulk?
Ask us about AVOXI Flex, our flexible SIP trunk solution for enterprises
and wholesale partnerships. Buy and provision phone numbers in bulk with
phone number APIs and enjoy wholesale SIP trunk rates in India and beyond.
Buying Phone Numbers in Bulk?
Ask us about AVOXI Flex, our flexible SIP trunk solution for enterprises
and wholesale partnerships. Buy and provision phone numbers in bulk with
phone number APIs and enjoy wholesale SIP trunk rates in India and beyond.
Modern VoIP Network with Next-Level Fraud Protection and Threat-Monitoring
Highly-Reliable VoIP Network
AVOXI consistently scores above the global standard for "excellent" call quality, backed by 99.995% uptime.
Secure SIP Calling
Your India SIP service is protected by TLS and SRTP encryption, real-time traffic abnormality alerts, proactive fraud monitoring, and a network optimized to avoid packet loss.
Compliant VoIP Solutions
Our SIP trunk platform maintains the most up to date technology available to ensure your organization's data is protected. We adhere to global security standards and privacy regulations.
What Customers Are Saying
Don't just take our word for it. See why thousands of businesses rely on AVOXI as their global communications platform.
that can be customized according to usage."
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Patricia Neo Hyatt Corp |
AVOXI definitely makes a difference on every level.”
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Capucine Golicheff BNP Paribas |
our teams required very little training to get started right away.”
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Marco Rinalducci Argos Assistance |
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Andy Dao Crown Worldwide |
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Wey Jing Ho World Link Communications |
| Patricia Neo Hyatt Corp |
| Capucine Golicheff BNP Paribas |
| Marco Rinalducci Argos Assistance |
| Andy Dao Crown Worldwide |
| Wey Jing Ho World Link Communications |
India SIP Trunk Service Features
AVOXI's SIP trunking service includes all the tools you need to quickly improve your communications.
India SIP Trunk Service Features
AVOXI's SIP trunking service includes all the tools you need to quickly improve your communications.
India VoIP SIP Service FAQ
Yes. AVOXI offers SIP trunking solutions that meet India’s regulatory requirements, including lawful intercept readiness and local PSTN connectivity. Our team stays current with Telecom Regulatory Authority of India (TRAI) and Department of Telecommunications (DoT) guidelines to ensure your deployment is compliant from day one.
AVOXI SIP trunks work with all major PBX and UC platforms, including 3CX, Avaya, Microsoft Teams, Cisco, Zoom, and more. No additional hardware is required, and setup takes just minutes with our onboarding tools and detailed documentation.
AVOXI SIP trunks come with unlimited concurrent call capacity. You can scale usage up or down on demand. There’s no need to pre-purchase a fixed number of channels.
VoIP (Voice over Internet Protocol) is the broader technology that allows phone calls to be made over the internet. SIP trunking is a specific method of delivering VoIP services by connecting your phone system to the traditional phone network (PSTN) via the internet. SIP trunking allows for greater control, scalability, and direct PSTN access, making it an ideal solution for enterprise setups.
SIP trunking sends voice calls over the internet, letting you scale easily, cut costs, and integrate with cloud tools.
Primary Rate Interface (PRI) relies on physical Integrated Services Digital Network (ISDN) lines to deliver a fixed number of voice channels—typically 30 in India. It requires on-premises hardware, offers limited scalability, and often has higher setup and maintenance costs.
In short, SIP is cloud-based, flexible, and modern, and PRI is physical, fixed-capacity, and legacy.
Expect the Best from Your India SIP Trunk Provider
Choosing an SIP trunk provider in India isn’t just about call quality—it’s about finding a solution that works with your business, not against it.
With AVOXI, expect:
A partner, not just a provider:
Expert guidance on local compliance, global routing, and smart setup so you can scale without the guesswork
Reliable voice, anywhere:
99.995% uptime, instant number provisioning, and flexible channel scaling—ready for India and 150+ countries
Support that shows up:
24/7 global assistance from telecom experts who understand enterprise workflows and regional requirements
Trusted by businesses in finance, SaaS, travel, logistics, and more, AVOXI makes complex voice infrastructure simple and scalable.
Additional Resources
PSTN Replacement
Guide to Voice Termination Services
Retain Phone Number
International
Number Porting
Virtual Phone Line
Benefits of
SIP Trunking
What Is SIP Trunking?
SIP trunking is a technology that connects your phone system to the public telephone network over the internet, offering a flexible alternative to traditional telephony in India.
For businesses operating in India, SIP trunks unlock several benefits:
- Scalability: Add call capacity instantly, without hardware or contracts
- Cost savings: Pay only for what you use and route calls more efficiently
- Business continuity: Stay connected even during outages with cloud-based routing and failover
- Regulatory flexibility: Work with providers like AVOXI that support local compliance needs
SIP trunking is the voice infrastructure that powers modern, agile businesses, especially those expanding in regulated markets like India.
👉 Explore SIP trunking vs. traditional voice services.
Choosing the Right SIP Trunk Provider in India: What to Look For
Not all SIP trunking providers are built for enterprise business needs, particularly in India’s highly regulated telecom environment. If you're evaluating providers, here’s what matters most:
Regulatory compliance in India
India enforces strict telecom laws. Your provider should support lawful intercept, PSTN connectivity, and local number provisioning in line with DoT/TRAI requirements.
Legacy providers, such as Tata Communications, are well-established but may involve longer provisioning cycles. Choose a partner that balances compliance with speed.
Consistently high call quality
Look for providers with a strong mean opinion score (MOS) of 4.2 or higher, Tier 4 data center infrastructure, and India-optimized routing to ensure clear and reliable conversations as well as improved customer experience.
Uptime guarantees and failover
Enterprise-grade SIP needs more than good call quality. Insist on 99.99%+ uptime service level agreements (SLAs), automatic failover, and geographic redundancy to minimize downtime.
PBX and UC platform compatibility
The best SIP providers work with your existing setup—whether you're on 3CX, Microsoft Teams, Zoom, Avaya, or Cisco. You shouldn’t need custom hardware to get started.
Scalability and control
Your voice solution should grow with your business. Choose a provider that lets you scale channels on demand, manage numbers globally, and view real-time usage data.
Related: The Definitive Guide to SIP Trunking in the USA and Beyond
How to Get SIP Trunks in India with AVOXI
Connecting your cloud platform or on-premises PBX to India's public network is fast and easy with AVOXI. Follow these simple steps to get up and running:
1. Tell us about your setup
Detail your current setup, including whether you use an on-prem PBX, cloud platform, or UC tool like Microsoft Teams. We’ll evaluate SIP compatibility and guide you through upgrading or switching to a hosted PBX if necessary.
2. Confirm compliance and coverage needs
Leave telecom regulations to us. We'll help you with India-specific requirements, including lawful intercept, PSTN routing, and regulatory documentation, to ensure compliance from day one.
3. Choose your numbers and channel capacity
Select local or toll-free India-based direct inward dialing (DID) numbers right from the AVOXI platform. Choose how many concurrent calls you want to start and scale as needed.
4. Configure your SIP trunks
Set up trunk details like connection type, authentication, and supported protocols. AVOXI provides detailed configuration guides and offers assistance every step of the way.
5. Prepare your network
Open necessary ports and whitelist AVOXI’s IP addresses to maintain strong voice quality and connection stability. Not sure how? Our support team has you covered.
6. Launch and manage everything in one place
Manage numbers, routing, and usage from a single dashboard once your trunks are live. Use built-in tools or APIs to adjust call flows, add features, or automate provisioning.
Expect the Best from Your India SIP Trunk Provider
Look around the AVOXI platform and see what modernized SIP service can do.
Talk to an expert today and try it risk-free!