VoLTE, Coverage & Networks

Take a look at the topics below for information on VoLTE, Optus coverage and the Optus network.

What's VoLTE?

VoLTE (Voice over LTE) is the technology that enables voice calls to be made on the Optus 4G Plus network. VoLTE is available everywhere the Optus 4G Plus network reaches.

With VoLTE you’ll notice some great enhancements, such as faster call connection times as well as the ability to talk and browse at the same time when on a 4G connection. Just like our 3G network, your 4G voice calls will be high definition, providing a sharp and clear voice call.

VoLTE is currently available to eligible Optus Consumer / SMB Postpaid customers using a compatible VoLTE device purchased from Optus. 

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What's LTE?

LTE (Long Term Evolution) is the 'fourth generation' of mobile technology used to provide 4G services. The Optus 4G Plus network uses three types of LTE technology, FD-LTE, TD-LTE and LTE-A.

Select an option below for more about information on the different types of LTE technology,

FD LTE is a type of 4G technology used by the Optus 4G Plus network. FD-LTE technology uses two separate frequency channels (one channel for data download and one channel for data upload).

TD LTE is a type of 4G technology used by the Optus 4G Plus network. The upload and download of data occurs on the same frequency bands, but at different times.

LTE-A is the next generation of 4G technology used by the Optus 4G Plus network. LTE-A improves your 4G experience by bringing a new features like Carrier Aggregation.

What is Carrier Aggregation?

Put simply, Carrier Aggregation improves network speeds by combining a number of frequency bands to make the ‘network pipe bigger’. This means you can go even faster on the Optus 4G Plus network.

LTE Advanced won’t kick in all the time as the Optus 4G Plus network is already superfast, instead LTE Advanced will give an extra speed boost when downloading very large files or HD videos. We are planning on rolling out more LTE Advanced features in the future.

What frequencies does Optus use for LTE Advanced?

Carrier Aggregation (2x channel) on the Optus 4G Plus network requires a compatible category 6 device. This technology uses several combinations of 4G spectrum bands,

  • Selected capital cities: We combine our 2300MHz spectrum
  • Some capital cities / major metropolitan areas: We also use 700MHz & 1800MHz
  • Major regional town centres: We use 700 MHz & 2600MHz

Carrier Aggregation (3x channel) on the Optus 4G Plus network is available in selected parts of Newcastle / Melbourne CBD and requires a compatible category 9 device. This technology uses a unique combination of,

  • 20+20MHz of 2300 MHz
  • 15MHz of 1800 MHz spectrum

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What are the main differences between 3G & 4G?

The main differences between 3G and 4G are,

Speed 
  • 4G is quicker than 3G.
  • This means less buffering, better video quality, enhanced gaming experience and improved streaming services. 
Frequencies 
  • The Optus 4G Plus network uses the LTE 700Mhz, 1800Mhz, 2100Mhz, 2300MHz & 2600Mhz frequency bands
  • The Optus 3G network uses the 900MHz & 2100MHz frequency bands

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Related Information

Click here for more information on our Mobile network coverage, alternatively have a look at our related articles,

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