For VoIP in India, international calls must be carried by a licensed International Long Distance Operator (ILDO) and pay an international termination charge regulated by TRAI. Since October 2024 the Department of Telecommunications (DoT) has blocked incoming international calls that show an Indian number, so a route that promises "local Indian CLI" from abroad does not fit the rules.
Rules last checked: October 2026.
Regulators and operators
India has two bodies that matter for voice: TRAI (Telecom Regulatory Authority of India), which sets interconnection and termination charges, and the DoT (Department of Telecommunications), which issues licences and runs anti-fraud systems. The mobile market has four operators:
- Jio (Reliance Jio): the largest network.
- Airtel (Bharti Airtel): the second network.
- Vi (Vodafone Idea).
- BSNL: the state owned operator, which also runs much of the fixed network.
Mobile subscriptions far outnumber fixed lines. Indian mobile and fixed numbers are both ten digits and not split by a simple prefix, and number portability is in place, so carriers route on number range data rather than a single mobile prefix. See mobile number portability and call routing.
Termination charge and gateways
An incoming international call pays the international termination charge (ITC) to the Indian access operator. Under the framework TRAI introduced in 2020, the ITC is no longer a single fixed figure: operators can set it within a range defined by TRAI, and they must offer the same rate to integrated and standalone ILDOs. TRAI has adjusted the ITC several times since 2009, partly to reduce the gap between international and domestic termination that feeds grey routes.
Only licensed ILDOs may bring international voice into India. Delivering international traffic as domestic calls, through SIM boxes or unlicensed IP gateways, is illegal and is treated by the authorities as a security issue as well as a revenue one. For buyers this means:
- A route that lands on an ILDO with direct access to Jio, Airtel, Vi and BSNL is the stable option.
- Price differences between operators come from the ITC each one sets and from the transit chain.
- Very cheap "local" routes are almost always bypass. See SIM box bypass fraud.
CLI rules and spoofed call blocking
In October 2024 the DoT launched the International Incoming Spoofed Calls Prevention System. It identifies calls that arrive from abroad while showing an Indian number and has the operators block them. In its first day it flagged about 90% of such calls. After fraudsters moved to foreign numbers, operators were asked to label calls from outside India as international and to block carriers that keep sending spoofed traffic; several carriers and aggregators were cut off by Indian operators.
What this means in practice:
- Send a valid international CLI in E.164 format. Do not present an Indian (+91) number on traffic that originates abroad: it will be blocked. See E.164 number format.
- "Local CLI" offers for India on international traffic should be refused. Read CLI spoofing and robocall rules.
- Carriers that send spoofed calls risk being blocked by Indian operators, which can take your legitimate traffic down with them.
What buyers usually ask for
| Request | Why |
|---|---|
| CLI route with international caller ID | The rules require it, and callers are more likely to answer; see CLI vs non-CLI |
| Operator coverage | Jio and Airtel carry most traffic; check Vi and BSNL quality separately |
| Traffic type declared | Call center and dialer traffic is accepted on fewer routes; see call center VoIP routes |
| Steady ASR and ACD | Sudden drops can mean blocking at the gateway; see why ASR drops |
What drives the price
The ITC is the base cost. Above it, price depends on the ILDO and transit path, the terminating operator, CLI handling and the billing increment. Because India is a large, competitive destination, rates are close between legitimate carriers; differences of quality matter more than small price gaps. A general overview is in what drives VoIP termination prices.
Getting a route
See the India VoIP termination page and, for messaging, A2P SMS to India together with the India DLT registration guide. Tell us your CLI, traffic type and volume, and we source and manage the route through our VoIP termination service. Request an India voice route.
Frequently asked questions
Is VoIP legal in India?
VoIP is legal in India when it follows the licensing rules. International calls into India must be carried by a licensed International Long Distance Operator and pay the international termination charge. Delivering international traffic as domestic calls through SIM boxes or unlicensed IP gateways is illegal, and the authorities treat it as a security issue as well.
Do I need a VoIP license in India?
Companies that carry telecom traffic in India need a licence from the DoT, and bringing international voice into the country is reserved to licensed ILDOs. A foreign buyer sending calls to India does not terminate them itself, so it should use a carrier whose route lands on a licensed ILDO with access to the Indian networks.
Why are calls from abroad showing an Indian number blocked?
Since October 2024 the DoT's International Incoming Spoofed Calls Prevention System has operators block calls that arrive from abroad while showing an Indian number, a common fraud pattern. Send a valid international caller ID in E.164 format on traffic that originates outside India, and refuse local CLI offers for India.
Who are the mobile operators in India?
The four mobile operators are Jio, the largest network, Airtel, Vi (Vodafone Idea) and the state-owned BSNL, which also runs much of the fixed network. Indian mobile and fixed numbers both have ten digits and number portability is in place, so carriers route on number range data rather than a simple mobile prefix.
Need a route?
Send the destination, route type and target rate. We reply with what we can deliver.