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USSD-Based Call Forwarding

USSD-Based Call Forwarding:

The Department of Telecom (DoT) has directed telecom operators to halt USSD-based call forwarding from April 15 due to misuse, requiring subscribers to activate it through alternative methods.

  • Unstructured Supplementary Service Data (USSD) is a protocol used in GSM networks for sending short text messages.
  • It facilitates instant messaging without storing messages on the operator or subscriber’s device.
  • USSD comes in two types:
    • Pull (user-initiated) and
    • Push (operator-initiated), using * and # characters and numeric codes.
  • Messages typically start with * or # and end with #, with a maximum length of 182 characters.
  • It’s commonly used for balance deduction notifications and checking IMEI numbers on mobile phones.