Best SIP Trunk Providers in India: Pricing & Setup

By Subhash Kalluri, CEO at FreJun

Last updated on April 28th, 2026 at 11:54 am

SIP trunk providers in India help businesses cut communication costs by replacing traditional phone lines with internet-based calling. Indian companies adopting SIP (Session Initiation Protocol) trunking reduce telecom bills by up to 60% (Source: TRAI Annual Report 2024), gain elastic scalability, and integrate voice directly into CRM and cloud PBX systems. As remote work accelerates across India, choosing the right SIP trunk provider determines whether your business communication scales efficiently or becomes a bottleneck.

Quick Answer: The best SIP trunk providers in India for 2026 are FreJun, Tata Teleservices, Twilio, Plivo, and Telnyx. FreJun ranks #1 for India-based deployments because it combines DoT-licensed SIP trunking, AI call transcription, CRM integration with Salesforce and HubSpot, and INR pricing from ₹1,149/user/month — with zero setup fees and built-in TRAI compliance.

The top SIP trunk providers in India offer DoT-licensed voice infrastructure, elastic channels, and CRM integration — with FreJun leading on AI features and INR pricing from ₹1,149/user/month.

What is SIP Trunking?
SIP (Session Initiation Protocol) trunking connects a business PBX or IP phone system to the Public Switched Telephone Network (PSTN) over broadband, replacing physical copper lines. It transmits voice as data packets using VoIP technology, enabling elastic call channels, lower per-minute rates, and seamless CRM integration.

Quick Recommendations: Which SIP Trunk Provider Should You Choose?

• Best Overall (India): FreJun — AI transcription, CRM sync, DoT-licensed, INR pricing
• Best for Large Enterprises: Tata Teleservices — up to 1,500 parallel calls, single-link replacement
• Best for Developers: Twilio or Telnyx — REST API, global coverage, pay-as-you-go USD
• Best for Budget Startups: Sonetel — plans from $9.95/user/month
• Best for India SMBs: CloudBharat — local support, ₹3,300/month for 5 channels
• Best for High Call Volume: Avoxi — unlimited SIP channels, 170+ country DIDs

What is SIP Trunking and How Does It Work?

SIP trunking (Session Initiation Protocol trunking) delivers voice and unified communications over the internet by connecting a business PBX (Private Branch Exchange) or IP phone system to the PSTN (Public Switched Telephone Network) via a SIP trunk provider. Instead of physical telephone lines, SIP trunks use VoIP (Voice over IP) technology to transmit voice as data packets over broadband — eliminating the need for ISDN, PRI, or traditional copper lines.

A SIP trunk provider is a carrier or cloud platform that routes calls between your PBX and the PSTN, typically via a REST API or direct SIP connection. The provider assigns DID (Direct Inward Dialing) numbers, manages call routing, handles failover, and ensures TRAI/DoT compliance for calls originating or terminating in India.

How SIP Trunking Works: The Technical Flow

1. Your PBX or IP phone system initiates a call using a SIP INVITE message
2. The SIP trunk provider receives the request at its SIP proxy/edge server
3. The provider authenticates your credentials (IP-based or username/password)
4. The call routes over the provider’s carrier network to the destination (PSTN, mobile, or another VoIP endpoint)
5. Voice transmits as RTP (Real-time Transport Protocol) media packets between endpoints with codec negotiation (G.711, G.729, Opus)
6. Call termination sends a SIP BYE message and CDRs (Call Detail Records) log for billing

SIP Trunking vs VoIP vs PRI: Key Differences

Technology	Infrastructure	Channels	Best For
SIP Trunking	Broadband / internet	Unlimited (elastic)	Businesses replacing PRI; dev teams building voice apps
PRI / ISDN	Physical copper lines	Fixed (30 channels per PRI)	Legacy enterprises (being phased out)
Hosted VoIP	Cloud-hosted PBX	Per-seat licensing	SMBs wanting a managed phone system

Why Indian Businesses Prefer SIP Trunking

• Cost Savings: Eliminates multiple physical phone lines; domestic SIP calls cost ₹0.30–0.50/min vs ₹1.50–2.50/min on traditional PSTN
• Scalability: Add or remove channels instantly as your team grows — no hardware changes required
• Global Connectivity: Make local and international calls without extra infrastructure
• Reliability: Call failover and redundancy ensure business continuity
• Integration: Works with modern cloud PBX, CRMs, and collaboration tools

Example: A 50-person business using SIP trunking routes all calls through the internet instead of paying for 50 separate phone lines. This approach cuts costs and improves call quality simultaneously.

How Do SIP Trunk Providers Help Indian Businesses?

SIP trunk providers play a critical role in modernizing how Indian businesses handle communication. By replacing traditional phone lines with internet-based calling, they enable organizations to cut costs, improve efficiency, and scale faster. Furthermore, the integration capabilities these platforms offer make them essential for businesses running CRM-driven sales and support operations.

Key Ways SIP Trunk Providers Help Businesses

• Reduce Communication Costs: Calls route via the internet at much lower rates, especially for international destinations
• Scalability for Growth: Easily add or remove call channels depending on seasonal demand or business expansion without major infrastructure changes
• Enhanced Reliability: Providers offer redundancy, disaster recovery, and failover systems to ensure uninterrupted connectivity
• Seamless Integration: Works with cloud PBX systems, CRMs, and collaboration tools commonly used in Indian businesses
• Better Global Reach: Businesses connect with clients and partners worldwide without investing in expensive telecom hardware

Example in India: A growing e-commerce company in Bengaluru uses SIP trunking to manage thousands of customer support calls daily. Instead of investing heavily in traditional telecom infrastructure, they rely on a SIP provider to scale call volumes instantly while keeping costs predictable.

For Indian businesses, SIP trunk providers are not just about cheaper calls. They are enablers of digital transformation, business continuity, and customer experience improvement.

What Are the Advantages of Using SIP Providers for Business in India?

SIP service offers Indian businesses a modern, cost-effective alternative to traditional phone lines by using the internet to route calls. This approach significantly reduces communication costs, especially for long-distance and international calls. Additionally, it provides unmatched scalability, allowing companies to add or remove lines easily without new hardware or infrastructure.

Working with a SIP service provider in India gives businesses true global connectivity. Companies benefit from increased reliability through automatic call failover and seamless integration with existing PBX and cloud communication systems. As remote work and digital transformation grow in India, SIP trunking supports flexibility, mobility, and unified communications — all essential for staying competitive in today’s business environment.

How to Choose the Most Efficient SIP Communication System for Your Business

Selecting the right SIP trunk provider requires evaluating five key factors: DoT licensing status, per-channel pricing, TRAI compliance automation, CRM integration depth, and India-based support availability. However, many businesses focus only on per-minute rates and overlook compliance costs that can exceed the savings from cheaper call rates.

Key Advantages of SIP Trunking in 2026

Feature	Benefit for Businesses
Cost Savings	Eliminates traditional phone line expenses; domestic calls from ₹0.30/min
Scalability	Easily add or remove call channels as needed
High Call Quality	Supports HD voice calls with low latency via G.711 codec
CRM Integration	Seamless call tracking and customer insights in Salesforce, HubSpot, Zoho
Disaster Recovery	Ensures uninterrupted communication with automatic failover

What Does SIP Trunk Pricing in India Look Like in 2026?

SIP trunk pricing in India structures around three variables: channels (concurrent calls), call rates per minute, and DID (Direct Inward Dialing) number rental. Unlike fixed PRI lines, SIP trunks are elastic — you pay only for the channels you use. Here is what Indian businesses pay in 2026.

Pricing Model 1: Per Channel (Most Common for SMBs)

Each channel supports one concurrent call. For a team that makes 20 simultaneous calls at peak, you need 20 channels. Most India-based providers price per channel per month.

Pricing Model 2: Per Minute (Pay-As-You-Go)

Pay-as-you-go SIP trunking charges per call-minute with no monthly channel commitment. This model suits businesses with low or unpredictable call volume. Typical India per-minute rates in 2026 (Source: TRAI):

• Domestic India calls (PSTN): ₹0.30–0.50/min (vs ₹1.50–2.50 on traditional PSTN)
• India mobile termination: ₹0.40–0.70/min
• International calls (India to UAE): ₹1.50–3.00/min via SIP (vs ₹8–15 via PSTN)
• International calls (India to US): ₹1.00–2.50/min via SIP

What Drives SIP Trunk Cost and How to Avoid Overpaying

FreJun SIP trunking pricing: starts at ₹1,149/user/month (cloud telephony plan) with SIP trunk credentials, unlimited concurrent channels, and DoT compliance included. See full pricing.

What Do You Need to Know Before Buying SIP Trunking in India?

Three factors make SIP trunking in India different from deployments in the US or Europe. Ignoring them risks blocked calls, compliance fines, or poor call quality.

1. DoT Licensing: Always Use a Licensed Provider

The Department of Telecommunications (DoT) requires SIP trunk providers operating in India to hold a valid licence under the Unified Licence (UL) framework. Operating through an unlicensed SIP trunk provider violates the Indian Telegraph Act and can result in call blocking, regulatory fines, and business disruption. Always verify your provider’s DoT licence before deploying at scale. FreJun holds a valid DoT licence for cloud telephony and SIP trunking services in India (Source: Department of Telecommunications, Government of India).

2. TRAI Compliance for Outbound Calling

If your SIP trunk handles outbound commercial calls or SMS campaigns, you must register under the TRAI TCCCPR framework: DLT (Distributed Ledger Technology) registration as a Principal Entity, registered calling headers and message templates, and DND (Do Not Disturb) scrubbing before each outbound call. FreJun handles DLT registration, DND scrubbing, and consent management automatically for all India customers. In contrast, global providers like Twilio and Telnyx require you to implement compliance manually.

3. Bandwidth Requirements for India Deployments

• Minimum: 100 kbps per concurrent call (symmetrical upload/download)
• Recommended: Enterprise fibre with QoS (Quality of Service) configured to prioritise voice traffic
• For 20 concurrent calls: 2 Mbps dedicated bandwidth minimum, 5 Mbps recommended
• Codec choice: G.711 (higher quality, 80 kbps/call) or G.729 (compressed, 24 kbps/call) — choose based on your bandwidth constraint

How Do the Top SIP Trunk Providers Compare: FreJun vs Twilio vs Plivo vs Telnyx?

The four most-evaluated SIP trunking providers for India-based deployments are FreJun, Twilio, Plivo, and Telnyx. Here is a direct comparison across the dimensions developers and CTOs evaluate most: pricing, India-specific compliance, setup complexity, and support.

Pricing sourced from vendor websites, April 2026. Per-minute rates for Twilio, Plivo, and Telnyx vary by destination. FreJun pricing is INR-based; see frejun.com/pricing.

Which Regions Does FreJun SIP Trunking Support?

FreJun provides SIP trunking, DID numbers, and virtual numbers across the following regions. All numbers are DoT-licensed or locally regulated, meaning businesses can use them in outbound calling campaigns without TRAI or DoT compliance risk.

Developer Resources and API Documentation

• FreJun API documentation — REST API reference for SIP trunking, virtual numbers, call logs, webhooks, and CRM integrations
• Integration library — native connectors for Salesforce, HubSpot, Zoho, Pipedrive, Freshsales, and 20+ CRMs
• SIP credentials format: FreJun issues standard SIP URI, username/password, and IP authentication for PBX connection (Asterisk, FreePBX, 3CX compatible)
• Webhook events: call.initiated, call.answered, call.ended, call.transcription.ready, call.recording.ready

11 Best SIP Trunk Providers in India for 2026

Below are the best SIP trunk providers available in India in 2026. Each one serves a distinct use case, from AI-powered cloud telephony to enterprise-grade carrier infrastructure.

Provider	Best For	Starting Price	G2 Rating	Key Strength
FreJun	Best Overall	₹1,149/user/mo	4.9/5 ⭐	AI + CRM + DoT-licensed India infra
Tata Teleservices	Large Enterprises	Quote only	N/A	Up to 1,500 parallel calls
RingCentral	Global Teams	$20/user/mo	3.9/5 ⭐	Unified communications platform
Vonage	International Calling	Quote only	4.3/5 ⭐	Per-second billing, unlimited scalability
Avoxi	High Call Volume	$19.99/user/mo	4.7/5 ⭐	Unlimited SIP channels, 170+ countries
Nextiva	SMEs	$18.95/user/mo	4.4/5 ⭐	Multiple data centres, fraud mitigation
Sonetel	Startups	$9.95/user/mo	4.4/5 ⭐	Lowest entry cost
Telnyx	Developers	Usage-based (USD)	4.7/5 ⭐	Private IP network, 24/7 engineering support
CloudBharat	India SMBs	₹3,300/mo (5 channels)	N/A	Local support, TTLS/SRTP security
AstraQom	Global SMBs	Quote only	N/A	Multi-country, cloud PBX included
EasytelIndia	Indian Enterprises	Quote only	N/A	Strong domestic routing, IP-PBX integration

1) FreJun

FreJun is India’s leading cloud telephony platform, purpose-built for sales and support teams that need DoT-licensed SIP trunking with AI-powered call intelligence. The platform streamlines communication infrastructure from day one and enhances employee productivity through crystal-clear voice quality, real-time transcription, and a powerful analytics engine. FreJun’s analysis of 300+ client accounts shows that sales teams using its SIP trunking see a 15% reduction in missed calls and 12% higher customer satisfaction scores compared to traditional PSTN setups.

Key Features: Virtual number, click-to-call, auto-dial, voice broadcast, call routing, reports, analytics, AI call transcription, and call recording.

Pricing: Plans start at ₹1,149/user/month. The standard plan starts at ₹1,299/user/month.

G2 Review: 4.9 out of 5

FreJun SIP Trunking: Technical Setup

FreJun issues standard SIP URI credentials, username/password authentication, and IP-based authentication for PBX connection. The platform works with Asterisk, FreePBX, and 3CX out of the box. Additionally, webhook events (call.initiated, call.answered, call.transcription.ready) enable real-time CRM sync without custom development.

2) Tata Teleservices

Tata Teleservices offers reliable SIP trunking solutions that transmit voice and data affordably. Their voice connectivity product completely replaces traditional fixed PSTN lines in your office. A single physical link handles a maximum of 1,500 calls in parallel. The solution is straightforward to set up and requires no additional hardware for management.

Key Features: Single link scalability, auto-failover, flexible DID range, single link replacement, and Ethernet interface.

Pricing: Contact the Tata Teleservices team for pricing details.

G2 Review: Not rated

3) RingCentral

RingCentral is one of the reliable SIP trunk providers in India that offers communication solutions to businesses across the globe. The solution is fully scalable and flexible to accommodate an organization’s growing communication needs. RingCentral offers uninterrupted connectivity and a highly secure platform so clients can communicate sensitive information with confidence. However, note that its G2 rating of 3.9/5 reflects mixed user feedback on support responsiveness for India-based deployments.

Key Features: Local numbers, toll-free numbers, extensions, call delegation, call park, call flip, and call forwarding.

Pricing: The most basic plan starts at $20 per user per month.

G2 Rating: 3.9 out of 5

4) Vonage

Vonage provides communication solutions to over 100,000 clients, making it one of the largest communication platforms in the world. Besides voice services, it also provides video and messaging services, making it a strong option for companies looking to optimize their communication processes. Vonage instantly connects your PBX system to the internet and enables you to scale with virtually unlimited capacity. Their per-second billing reduces the overall cost of communication for your business.

Key Features: Automatic location-based routing, PBX compatibility, voice inspector, and programmable SIP.

Pricing: Contact the Vonage team for pricing details.

G2 Rating: 4.3 out of 5

5) Avoxi

If your requirements include unlimited concurrent calls and India-based DIDs, Avoxi is worth considering. Avoxi delivers high-quality outbound voice service via unlimited SIP channels, making it ideal for businesses with high calling needs. You can provision instant phone numbers from over 170 countries, including India. The platform’s intuitive interface lets you manage numbers from multiple carriers with relative ease. Additionally, you can get toll-free numbers, local Indian DID numbers, and mobile numbers from Avoxi.

Key Features: Call routing, call recording, auto-attendant, local caller ID, and number porting.

Pricing: The most basic plan starts at $19.99 per user per month.

G2 Rating: 4.7 out of 5

6) Nextiva

Nextiva’s SIP trunks enable your business to handle large volumes of inbound and outbound calls using a PBX server. The platform lets you add trunks, channels, and DIDs as you scale. Multiple data centres ensure that your calls remain reliable with supreme audio quality. Their flexible pricing system keeps costs manageable regardless of your budget.

Key Features: Detailed call records, fraud mitigation, automatic failover, online management, and call logs.

Pricing: The most basic plan costs $18.95 per user per month.

G2 Rating: 4.4 out of 5

7) Sonetel

Sonetel is a strong choice for businesses looking for SIP trunking services regardless of call volume. Besides affordability, Sonetel delivers exceptional audio quality, minimal audio latency, and good CLI presentation. You can add new phone numbers in minutes or port your existing phone numbers. Thanks to its virtual number feature, you can make calls closer to your customers and improve answer rates.

Key Features: Automatic location-based routing, PBX compatibility, voice inspector, and programmable SIP.

Pricing: The most basic plan costs $9.95 per user per month.

G2 Rating: 4.4 out of 5

8) Telnyx

Telnyx offers complete flexibility in how you manage your telephony. It also delivers high voice quality over the PSTN. The best part about Telnyx is its transparent pricing: it bills customers purely based on usage and not by seat, saving significant communication costs for businesses. You can also add or remove SIP trunks from within the portal or on-demand through API. That said, India-specific TRAI compliance requires manual implementation, which adds engineering overhead for Indian deployments.

Key Features: Voice recording, custom voice routing, detailed debugging, alerting, reporting, and bring-your-own-carrier.

Pricing: Contact the Telnyx team for pricing details.

G2 Rating: 4.7 out of 5

9) CloudBharat

CloudBharat is an Indian SIP trunk provider that combines affordability with high uptime. It integrates effortlessly with existing infrastructure and requires minimal configuration and maintenance. When you use their SIP services, all calls receive protection via TTLS (Transport Layer Security) and SRTP (Secure Real-time Transport Protocol), so your calls remain secure from interception. The platform is flexible, meaning you can adjust services, change phone numbers, and add or remove extensions as needed.

Key Features: DID number, IDD calls, concurrent calls, and international numbers.

Pricing: The most basic plan costs ₹3,300 per month for 5 channels.

G2 Rating: Not rated

10) AstraQom

AstraQom is a telephony platform that serves as a one-stop solution for communication needs. Besides SIP trunking, this provider also offers cloud PBX, text messaging, call distribution, and virtual numbers. They serve almost every country in the world and suit multi-national businesses well. Data centres around the world ensure that all your calls remain stable, secure, and uninterrupted.

Key Features: Auto-attendant, automated telephone surveys, toll-free numbers, live answering, and virtual receptionist.

Pricing: Contact the AstraQom team for pricing details.

G2 Rating: Not rated

11) Easytelindia

Easytelindia is a top Internet telephony service provider in India. It uses in-house network infrastructure to offer VoIP solutions for businesses across all industries. The communication solution is location-agnostic, meaning users can access services from any part of the world. Businesses can connect their IP-PBX network to the Easytelindia network to enjoy great international calling rates, flat-rate domestic termination, and access to their expansive origination network.

Key Features: 3-way calling, call forwarding, call waiting, direct international dialling, voicemail, and toll-free numbers.

Pricing: Contact the Easytelindia team for pricing details.

G2 Rating: Not rated

Is FreJun the Right SIP Trunk Provider for Your Business?

FreJun suits India-based businesses that need DoT-licensed SIP trunking with built-in TRAI compliance, AI call transcription, and CRM integration — without requiring a dedicated engineering team to manage compliance. In contrast, Twilio and Telnyx are better choices for developer-heavy teams building custom voice applications where API flexibility outweighs the need for managed compliance. Similarly, Tata Teleservices suits large enterprises that need a single-link solution handling 1,500+ parallel calls with carrier-grade SLAs.

The biggest mistake Indian businesses make when evaluating SIP trunk providers in India is focusing only on per-minute rates while ignoring DoT licensing status, TRAI compliance automation, and CRM integration depth. We recommend requesting a DoT licence number from any provider before signing a contract. FreJun provides this documentation upfront. For most Indian sales and support teams, FreJun’s combination of INR pricing, zero setup fees, elastic channels, and AI-powered call intelligence makes it the strongest choice among all SIP trunk providers in India evaluated in this guide.

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Further Reading: Top 11 VoIP Service Providers In India

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Frequently Asked Questions About SIP Trunk Providers in India

Q1. What is SIP trunking in simple terms?

SIP trunking is a technology that allows businesses to make phone calls over the internet instead of traditional telephone lines. It connects your existing PBX system to the PSTN via a broadband connection, reducing costs by up to 60% compared to traditional PSTN rates. Additionally, it provides elastic scalability, meaning you add or remove call channels instantly without hardware changes.

Q2. Why should businesses in India use SIP trunk providers?

SIP trunk providers in India help companies save money, scale communication quickly, and ensure reliable connectivity. Domestic SIP calls cost ₹0.30–0.50/min versus ₹1.50–2.50/min on traditional PSTN (Source: TRAI). Furthermore, they integrate easily with cloud PBX and CRM tools, enabling sales teams to log calls automatically and track customer interactions in real time.

Q3. Is SIP trunking suitable for small businesses in India?

Yes, SIP trunking is cost-effective and scalable, making it ideal for startups and small businesses. A startup with 2–5 agents can start with just 2–5 channels at ₹700–₹3,500/month total. As a result, small businesses avoid the large upfront investment of traditional PRI lines while gaining enterprise-grade features like call recording, analytics, and CRM integration from day one.

Q4. How do I choose the best SIP trunk provider in India?

Consider five factors: DoT licensing status, per-channel pricing, TRAI compliance automation, CRM integration depth, and India-based support availability. First, verify the provider holds a valid DoT licence under the Unified Licence framework. Next, compare per-minute rates for domestic and international destinations. Finally, confirm whether TRAI DLT registration and DND scrubbing are automated or require manual implementation by your team.

Q5. What are the main advantages of SIP trunking over traditional phone lines?

The main advantages include lower costs, higher scalability, global reach, disaster recovery, and advanced features like call routing and analytics. SIP trunking eliminates fixed PRI line costs and replaces them with elastic channels you pay for only when in use. Moreover, automatic call failover ensures business continuity during network outages, which traditional copper lines cannot provide.

Q6. Can SIP trunking improve international calling for Indian businesses?

Yes, SIP trunking significantly lowers international calling costs and ensures better call quality. India-to-UAE calls cost ₹1.50–3.00/min via SIP versus ₹8–15/min via traditional PSTN. Similarly, India-to-US calls drop to ₹1.00–2.50/min. This makes it easier for Indian businesses to connect with global clients while keeping communication budgets predictable and manageable.

Q7. Does FreJun provide SIP trunking services in India?

Yes, FreJun offers DoT-licensed SIP trunking solutions in India that help businesses reduce call costs, improve reliability, and integrate seamlessly with cloud PBX and CRM systems. FreJun provides DID numbers across Mumbai, Delhi, Bangalore, Chennai, and Hyderabad, with TRAI DND scrubbing and DLT registration handled automatically for all India customers.

Q8. How is FreJun different from other SIP trunk providers?

Unlike many traditional providers, FreJun combines SIP trunking with AI-powered call summaries, CRM integration (Salesforce, HubSpot, Zoho), call recording, and analytics for complete business communication management. Additionally, FreJun is the only India-native provider that handles TRAI compliance automatically, charges in INR, and offers a 14-day free trial with no credit card required.

Q9. Can I use FreJun for both domestic and international calls?

FreJun supports both domestic and international calls at affordable rates, making it suitable for businesses that need global connectivity. The platform provides DID numbers in India (+91), UAE (+971), US (+1), UK (+44), and Singapore (+65). As a result, businesses can present local caller IDs in each market while managing all calls from a single platform.

Q10. Is FreJun suitable for startups and SMEs in India?

Yes, FreJun is designed to be scalable and cost-effective, making it a strong fit for startups, small businesses, and growing enterprises. Plans start at ₹1,149/user/month with zero setup fees and elastic channels. Furthermore, the 14-day free trial lets teams evaluate the platform without financial commitment before scaling.

Q11. Is SIP trunking cheaper than traditional telecom?

Yes, SIP trunking typically offers lower per-minute costs and better scalability than traditional telecom. Domestic India calls cost ₹0.30–0.50/min via SIP versus ₹1.50–2.50/min on traditional PSTN lines. Additionally, SIP trunking eliminates fixed monthly line rental fees and replaces them with elastic channel pricing, so you pay only for the capacity you actually use.

Q12. Can SIP trunking support remote work?

Yes, SIP trunking connects distributed teams through cloud PBX and VoIP systems with secure internet voice paths. Remote employees access the same phone system as office staff using a softphone app or IP phone. As a result, businesses maintain consistent call quality, call recording, and CRM logging regardless of where team members work — making SIP trunking essential infrastructure for hybrid and remote-first Indian companies.