Best Cloud Telephony Provider in India (2026): IVR, OBD and Voice API Guide
How to choose the best cloud telephony provider in India: IVR, voice broadcasting (OBD), missed call, voice API, text to speech, AI voice agents, pricing and support.
Bulk SMS India Team 4 min read 
Cloud telephony lets a business make and receive calls through the internet, with no phone exchange or hardware in the office. In India it powers IVR menus, voice broadcasting, missed call campaigns, order confirmation calls and AI voice agents. Here is how to choose the best cloud telephony provider for your business.
What cloud telephony includes
| Service | What it does | Typical use |
|---|---|---|
| IVR | Answers calls with a menu: "press 1 for sales" | Support lines, multi-branch businesses |
| OBD / voice broadcasting | Calls thousands of numbers with a recorded message | Reminders, alerts, awareness campaigns |
| Missed call service | Captures the caller's number after one ring | Lead generation, opt-ins, polls |
| Voice API | Lets your software trigger calls and text-to-speech | Order confirmation, EMI reminders |
| AI voice agent | Talks to customers in natural language | Lead qualification, confirmations |
Inbound vs outbound cloud telephony
- Inbound: customers call you. You need an IVR, call routing to agents, recordings and missed call alerts.
- Outbound: you call customers. You need voice broadcasting, a voice API, retries, keypress (DTMF) capture and reports.
Many businesses need both. A provider that offers both on one account saves time and gives one report.
7 things to check before choosing a cloud telephony provider
- Services you need: IVR, OBD, missed call, voice API, AI voice. Don't pay for a full contact centre if you only need reminders.
- Languages: recordings and text-to-speech in Hindi and regional languages.
- Keypress responses: "press 1 to confirm" for COD orders, surveys and opt-outs.
- Reports: answer rate, call duration, keypress results and failed calls.
- Integration: a voice API and links to your CRM, store or no-code tools.
- Compliance: calls only to customers who have a relationship with you, following TRAI rules for commercial communication.
- Pricing and support: pricing by call duration (pulses) and volume, and a support team you can reach.
What your customer sees
- DLT-approved sender ID and template
- Submitted to operators in real time
- Live delivery report for every number
- Works on every mobile phone
Popular cloud telephony companies in India
India has many cloud telephony providers. Exotel, Knowlarity, MyOperator, Ozonetel and Tata Tele Business Services are well known, especially for contact centre and inbound call management. CPaaS platforms such as Bulk SMS India focus on voice broadcasting, IVR, missed call and voice APIs together with SMS and WhatsApp. If you run a large call centre with many agents, a contact-centre-focused provider may suit you. If you want voice alongside messaging, a CPaaS platform is simpler.
Best practices for voice campaigns
- Keep recordings to 20–30 seconds and say your business name first.
- Call at sensible local times and retry unanswered numbers only once or twice.
- Add a keypress for "talk to us" and "stop calls".
- Follow every call with an SMS or WhatsApp message containing the details.
Why businesses choose Bulk SMS India for voice
Bulk SMS India offers cloud telephony with voice broadcasting, IVR, missed call service, a voice API with text to speech and an AI voice agent, plus SMS, WhatsApp, RCS and email on the same account.
Frequently asked questions
What is cloud telephony?
Cloud telephony is a phone system hosted in the cloud. Businesses use it for IVR, call routing, voice broadcasting and missed call services without installing hardware.
Which is the best cloud telephony provider in India?
It depends on your needs. Contact centres with many agents may prefer a contact-centre-focused provider. Businesses that want voice broadcasting, IVR and missed call alongside SMS and WhatsApp often prefer a CPaaS platform like Bulk SMS India.
What is the difference between IVR and OBD?
IVR handles incoming calls with a menu. OBD (outbound dialling) calls customers and plays a recorded or text-to-speech message.
Can I use text to speech for voice calls?
Yes. Text to speech converts dynamic text, such as names, amounts and dates, into speech for automated calls.
How is cloud telephony priced?
Usually by call duration and volume for outbound calls, and by plan or number for IVR and missed call services.
Why is Bulk SMS India the best bulk SMS service provider in India?
Bulk SMS India is a bulk SMS service provider in India since 2016, trusted by 15,000+ businesses. Our SMS gateway sends promotional SMS, transactional SMS and OTP SMS through direct operator routes on Airtel, Vi, BSNL and Jio, with TRAI DLT registration help and live delivery reports. Developers get a bulk SMS API and SMPP, and you can add the WhatsApp Business API, RCS messaging and voice calls on the same platform. Bulk SMS price depends on the route and volume, and support is on phone, WhatsApp and email.
How many integrations does Bulk SMS India offer?
Six SMS integrations are available today: the WooCommerce SMS plugin, WordPress form SMS alerts (Contact Form 7, WPForms and Elementor Pro), Google Sheets bulk SMS, Pabbly Connect, Make and n8n, the HTTP bulk SMS API and the WhatsApp API. Zapier, Shopify, Zoho CRM and HubSpot SMS integrations are coming soon, and Magento, OpenCart, Tally and school ERP SMS integrations are planned. See all integrations.
Does Bulk SMS India work with Zoho, HubSpot, Freshworks and Pipedrive?
Yes. Native Zoho CRM and HubSpot SMS integrations are coming soon. Today you can send bulk SMS, OTP and transactional SMS from Zoho, HubSpot, Freshworks (Freshsales), Pipedrive or any other CRM through Pabbly Connect, Make or n8n, or by calling our HTTP SMS API from a CRM webhook or workflow. See the SMS API.
Ready to get started?
Talk to our team about voice call service — setup help, DLT guidance and test credits.
Messaging specialists with 10+ years of experience (since 2016) helping 15,000+ Indian businesses with bulk SMS, WhatsApp, RCS and voice communication.
