Missed Call Subscription

Missed Call Subscription is a cost-free method for users to subscribe or enroll in your program. When a person does a Missed Call (a.k.a. Flash or Beep) to a phone number, it triggers a voice call back or an SMS to her.

Advertise to your audience (e.g. flyers, radio, billboards) that they can make a free missed call to sign up for your SMS or IVR campaign, retrieve information, or take a survey.

How to set-up a Missed Call Subscription

To activate this feature, a Virtual Phone Number is required to receive Missed Calls—to give people a local phone number to dial in. A virtual phone number can receive an unlimited number of simultaneous Missed Calls.

Once a virtual phone number is linked to an existing campaign, end users can dial the phone number and the system will intentionally not answer the call – it will automatically hang up after two to three ringtones. Within a minute, it will trigger the system to send the corresponding SMS or Voice campaign.


After adding the content of your message on Step 1 of your campaign, you can proceed to Step 3:

1. Under Sender/Caller IDs section, by default, it will use “System Default” for the Caller ID.
2. Replace it with your own virtual phone number by clicking the dropdown icon.
3. When you’re all set, hit “Launch Now” button.

Note: In some countries, prepaid users must have a minimum amount of airtime or phone credits to initiate a Missed Call. The airtime needed varies per country and may also vary per mobile network. Although users need airtime credits to initiate a Missed Call, no airtime will be actually deducted from their balance because our system will not answer the call. To this extent, using Missed Calls is an easy way to eliminate the cost barrier for low-income participants to self-subscribe to your campaign.



Have questions or need a little extra help?