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November 3, 2026 · By Piyush Sahoo Yes. Vobiz is a cloud telephony provider. You can buy phone numbers, make and receive calls, build IVR menus, record calls, run conferences, connect your PBX over SIP trunks, and send SMS and WhatsApp messages. It all runs on the Vobiz platform, and you manage it from the Vobiz Console or the REST API.
Key takeaways
  • Cloud telephony moves your numbers, routing, and recording from office hardware to a provider’s platform.
  • Vobiz covers voice, SIP trunks, recording, conferencing, SMS, and WhatsApp under one set of credentials.
  • You can run call flows on Vobiz through VobizXML, or keep your PBX and connect it over a SIP trunk.
  • Indian numbers and domestic routes carry extra eligibility, KYC, and number series rules.

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What is cloud telephony?

Cloud telephony is a phone system that runs on a provider’s platform instead of on equipment in your office. The provider hosts the numbers, call routing, and recording. You manage them over the internet through a web console or an API. You may also see it called hosted telephony or internet telephony. The “cloud” part follows NIST’s definition of cloud computing: shared resources that you provision and release on demand, with little management effort. For your business, that changes three things:
  • No PBX hardware to buy. Vobiz hosts your numbers and carries your calls, and your team can answer on softphones, IP phones, or WebRTC clients.
  • Changes happen in software. You add a number, point it at a different call flow, or raise capacity from the Console or the API.
  • One account covers every channel. Voice, SIP trunks, SMS, and WhatsApp all use the same Vobiz Auth ID and Auth Token.

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How it differs from an on-premise PBX, VoIP, and SIP trunking

These terms overlap, so it helps to separate them.

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What cloud telephony does Vobiz provide?

Each capability below has its own Vobiz documentation.

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How the pieces fit together

Vobiz sits between your customers and your business systems. Customers reach you over public phone and messaging networks. Your systems connect to Vobiz through the REST API, webhooks (callbacks), SIP, or a WebSocket audio stream. Three layers. Your customers reach Vobiz by phone call, SMS, MMS, RCS, and WhatsApp over public networks. The Vobiz cloud holds phone numbers, voice calls, IVR and VobizXML, SIP trunks, recording, conferencing, call records, and messaging, managed in the Console or by API. Your business connects by REST API, webhooks (callbacks), SIP, and WebSocket audio from a web server or CRM, PBX or SBC, AI voice agent, or softphones. Three layers. Your customers reach Vobiz by phone call, SMS, MMS, RCS, and WhatsApp over public networks. The Vobiz cloud holds phone numbers, voice calls, IVR and VobizXML, SIP trunks, recording, conferencing, call records, and messaging, managed in the Console or by API. Your business connects by REST API, webhooks (callbacks), SIP, and WebSocket audio from a web server or CRM, PBX or SBC, AI voice agent, or softphones.

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How Vobiz handles an inbound call

Once you buy a number, you choose how it routes calls. There are two main routes. An inbound call to your Vobiz number takes one of two routes. Through an XML Application, Vobiz requests your answer URL and runs the VobizXML you return, which can drive an IVR menu, a phone number, a SIP endpoint, a conference, or an audio stream. Through a SIP trunk, Vobiz forwards the call to your origination URI, which reaches your PBX, SBC, or AI voice platform. Both routes offer webhooks (callbacks), plus call logs and recordings in the Console. An inbound call to your Vobiz number takes one of two routes. Through an XML Application, Vobiz requests your answer URL and runs the VobizXML you return, which can drive an IVR menu, a phone number, a SIP endpoint, a conference, or an audio stream. Through a SIP trunk, Vobiz forwards the call to your origination URI, which reaches your PBX, SBC, or AI voice platform. Both routes offer webhooks (callbacks), plus call logs and recordings in the Console.
  • Attach the number to an XML Application. Vobiz requests your answer_url when a call arrives and runs the VobizXML your server returns. Your code decides what happens next, so it can look up the caller or apply business rules. See Attach a number.
  • Assign the number to a SIP trunk. Vobiz forwards the call to the origination URI you set, such as your PBX or AI voice platform. Your own system then controls the call. See Assign a number to a trunk.
For outbound calls, your application calls the Make a Call API, your PBX sends calls over a trunk, or you run a campaign.

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What businesses build with it

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What engineers should know

Vobiz builds on open standards, so your team works with protocols it already knows. Every REST request carries your credentials in the X-Auth-ID and X-Auth-Token headers. See Vobiz authentication for details.

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Cloud telephony in India

India has its own telecom rules, so check these before you plan a deployment. The India calling regulations page has the full list.
  • Eligibility: Businesses registered in India can rent Indian numbers and use domestic routes. Businesses elsewhere use international routes.
  • KYC: You complete India number KYC before you rent an Indian number.
  • Media anchoring: Both legs of a domestic call stay within India.
  • Consent: Commercial calls need explicit digital consent. See UCC management.
  • Number series: TRAI’s 2025 amendment to its commercial communication rules keeps promotional calls on the 140 series and designates the 1600 series for service and transactional calls.
TRAI says the 1600 series is assigned to BFSI entities and government organisations. It set adoption deadlines by sector in November 2025, and insurers had until February 15, 2026. To request a 140, 160, or 92 series number, contact the Vobiz team. Vobiz docs use “160 series” for the same numbers TRAI calls 1600.

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How to get started

Buying a number debits your balance, and placing a call reaches a real person and is billed. Use your own credentials, and confirm each of these actions before you run it.
1

Create your account

Sign up at console.vobiz.ai. Your Auth ID and Auth Token are on the dashboard.
2

Complete KYC verification

Submit your verification documents before you buy live numbers or launch outbound campaigns. For India, also read the calling regulations.
3

Get a number

Buy a number in the Console or by API. Check its capabilities and fees first. To keep your current carrier, follow Bring Your Own Carrier instead.
4

Route the number

Attach it to an XML Application or assign it to a SIP trunk.
5

Test your first call

Follow the Vobiz quick start, then add webhooks (callbacks) and recording as you need them.

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FAQ

Cloud telephony is a phone system that runs on a provider’s platform instead of on equipment in your office. The provider hosts the numbers, call routing, and recording. You manage them over the internet through a web console or an API.
Yes. Vobiz provides phone numbers, inbound and outbound calling, IVR, SIP trunking, call recording, conferencing, webhooks (callbacks), call detail records, SMS, and the WhatsApp Business API. You manage them from the Vobiz Console or the Vobiz API.
No. Vobiz hosts your numbers and trunks, and your team can take calls on softphones, IP phones, or WebRTC clients through SIP endpoints. If you already run a PBX, you can connect it with a SIP trunk.
Yes. With Bring Your Own Carrier, your numbers stay with your current provider and you route that traffic through Vobiz. You can also buy a new number from Vobiz inventory.
It depends on what you build. Numbers, trunks, call logs, recordings, and capacity are all in the Vobiz Console. A custom IVR needs a web server that returns VobizXML, so plan for a developer or technical partner. The Visual XML Builder helps you prototype call flows, and Integrations has setup guides for AI voice platforms.
Yes. Vobiz is available in 130+ countries, and you can filter number inventory by country. Indian numbers and domestic calling follow TRAI and DoT rules, including eligibility and KYC. See India calling regulations before you plan an India deployment.

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Further reading on Vobiz

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Sources

Read on November 3, 2026.

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