With reference to communication technologies, what is/are the differen

With reference to communication technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?

1. LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G.
2. LTE is data-only technology and VoLTE is voice-only technology.

Select the correct answer using the code given below.

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1 only

2 only

Both 1 and 2

Neither 1 nor 2

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC IAS – 2019

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The correct answer is D, as neither statement 1 nor statement 2 is correct.

Statement 1 is incorrect because LTE (Long-Term Evolution) is typically marketed as 4G technology, offering significant speed improvements over 3G. VoLTE (Voice over Long-Term Evolution) is a service that allows voice calls to be made over the 4G LTE data network, rather than the older circuit-switched networks used by 2G and 3G.
Statement 2 is incorrect because LTE is a data technology designed for high-speed data transfer, and it can also carry voice traffic (using VoLTE or earlier technologies like CSFB). VoLTE is a specific implementation to carry voice traffic as data packets over the LTE network; it is not a voice-only technology, but rather a method for voice communication *over* a data network. LTE itself provides data connectivity, and voice can be provisioned over it.

LTE was developed as an upgrade path from GSM/UMTS technologies, providing increased network capacity and speed. VoLTE leverages the all-IP nature of the LTE network to deliver voice services with potentially higher quality (HD Voice) and faster call setup times, while simultaneously allowing users to access data services during a call. Without VoLTE, voice calls on an LTE network typically require the phone to drop back to a 2G or 3G network (Circuit-Switched Fallback – CSFB) for the duration of the call.

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