SF Prep Notes

BSNL launches Voice over WiFi calling nationwide

BSNL on 1 January 2026 rolled out Voice over WiFi (VoWiFi), or Wi-Fi Calling, to customers in all telecom circles, free of extra charge.

Summary

Bharat Sanchar Nigam Limited (BSNL) on 1 January 2026 announced the nationwide rollout of Voice over WiFi (VoWiFi), also called Wi-Fi Calling, for customers in every telecom circle. VoWiFi lets users make and receive calls and messages over a Wi-Fi network using their existing number and phone dialer, and is an IMS-based service that supports seamless handover between Wi-Fi and mobile networks. BSNL said the service is free of cost and particularly useful in rural and remote areas with weak mobile coverage.

Key facts

Service
Voice over WiFi (VoWiFi) / Wi-Fi Calling
Coverage
All BSNL telecom circles
Technology
IMS-based; seamless Wi-Fi–mobile handover
Cost
Free; no extra charge for Wi-Fi calls

Practice MCQs 1 questions

Q1 Advanced

BSNL's Voice over WiFi (VoWiFi) service, rolled out nationwide on 1 January 2026, is based on which network architecture?

Show answer

Correct answer: A — IMS (IP Multimedia Subsystem)

PIB (Communications): VoWiFi is an IMS-based service supporting seamless handovers between Wi-Fi and mobile networks, without third-party apps.

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