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What is an ISD Call

What Does ISD Call Mean? How to Activate ISD on Your Airtel Number?

Do you want to have Airtel ISD roaming on your number? To connect with your loved ones in another country, you must use International Subscriber Dialling (also known as ISD). ISD calls are much more expensive than conventional local and STD calls, according to telecom carriers. Airtel and other operators provide several prepaid and postpaid recharge plans that give savings on ISD calls or free minutes to allow you to make international calls from your phone. Let’s dig into know about what ISD calls mean in this blog.

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How do ISD Calls work?

On the Airtel network, the basic ISD service is enabled by default for all prepaid and postpaid connections. This implies you don’t need to do anything to enable ISD on your Airtel number if you want to contact someone in another country from your home network. Because the basic service is enabled by default, all you have to do to make an ISD call is prefix “+” to the phone number with the country code that you want to contact. The procedure is the same for both prepaid and postpaid Airtel connections.

However, if you have an Airtel postpaid connection and wish to contact a country with a call rate greater than Rs. 15, you must activate an advanced ISD service. This may be accomplished by visiting a nearby Airtel shop or by calling the 121-customer service number. An ISD phone call is made directly by a telephone subscriber or an individual rather than through a phone operator. Each country will be assigned an ISD number. It is a unique number or code.

Also Read: Why Taking International Roaming Pack Is Better Than Any Other Local Sim?

What is meant by ISD Call?

ISD is an abbreviation for International Subscriber Dialing. ISD (International Direct Dialing) is a sort of international phone call that is made directly by a phone user without the need of an operator. Each country has its own ISD code or number. We offer varying ISD charges to prepaid and postpaid users. Furthermore, call charges vary per area code. On our website, you may view the various ISD call prices that apply to Airtel prepaid and postpaid lines. You can easily activate the ISD pack on the Thanks app.

These packs have both prepaid and postpaid plans. However, to activate the services on the prepaid and postpaid plans, you must first complete a few procedures. Notably, all prepaid and postpaid packs have an Airtel number or network by default, therefore you do not need to take any further steps to access the ISD services. According to the company’s website, you are not permitted to deactivate or cease the services.

Also Read: How do I use my SIM card/Airtel number outside India?

ISD Calls postpaid

How to activate ISD on your Airtel Number?

The International Roaming pack is only useful while traveling abroad. To make international calls from India, use the ISD pack offered on the Thanks app to recharge your number. To make an international call, the user must first dial the country’s ISD code followed by the phone number. This has been the typical process for making international calls since the late twentieth century. The international call prefix is not included when writing down phone numbers for international use. Instead, the number should begin with a plus sign (+) and continue with the country code. The + sign indicates that what follows is the country code, and a dial-out code may be necessary depending on the originating nation.

Also Read: Best SIM Card for Tourist & International Travelers


Now that we know about ISD calling, it’s time to activate the ISD pack on your Airtel number soon. International subscriber dialling (ISD) is the direct dialling of an international phone call by a telephone subscriber rather than a telephone operator. When a subscriber dials an international call, an international call prefix (international dial-out code, international direct dial code, IDD code) must be entered before the country code. It is worth mentioning that while dialling the number, users must include “+” before the phone number as well as the country code. However, consumers must occasionally spend more than Rs. 15 for calling, in which case they must activate the services. Users must visit the company’s store and dial 121 to activate the services.

Airtel provides its consumers with prepaid, postpaid, internet, and international roaming services. Furthermore, we provide International Subscriber Dialling (ISD) services, which allow customers to call up someone in another country. All telecom carriers charge various rates for ISD calls, which are more expensive than conventional calls; nonetheless, Airtel provides many packages that include ISD calling.

Also Read: Why Is Airtel A Preferred Choice For International Travellers Of India?