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This webinar will examine the challenge facing operators to address increasing capacity and performance demands in mobile networks and consider the various macro network enhancements available such as deployment of 4x4 MIMO, Carrier Aggregation, antenna tilt optimization and increased sectorization. It will then explore the role of mobile network testing to enable operators to make well-informed decisions about which technologies are appropriate, beneficial and efficient in different network scenarios and environments and go on to draw conclusions.

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The report "Voice comes to the fore, again. VoLTE and Wi-Fi Calling redefine voice" has been published today. 

I would like to thank our sponsors, AT&T, Smartfren and T-Mobile for participating in the report and contributing their perspective in the interviews

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With over half of voice calls being routed over LTE and one of the earliest VoWi-Fi services, T-Mobile has been very active in drawing a new role for voice services and in taking a new approach to leverage voice services to improve customer retention. I have spoken with Mark McDiarmid, VP of Radio Network Engineering and Development at T-Mobile US on how voice is evolving in T-Mobile’s network.

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Smartfren is the first mobile operator in Indonesia to deploy LTE and VoLTE. The deployment of VoLTE has been fast, as the operator wants to go past its CDMA legacy. Next will be the deployment of Wi-Fi Calling to complement VoLTE. Christian Daigneault, Smartfren’s CTO, told us about Smartfren VoLTE experience: “VoLTE offers better voice quality, due to the HD voice vocoder, which we did not have in CDMA. This brings improved voice quality and fast call setup.”

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VoLTE and VoWi-Fi will coexist and complement each other. But should operators and enterprises allocate the voice traffic to the two interfaces? What are the relative advantages and challenges of the two technologies? Mark Grayson, Distinguished Engineer and CTO, Office of Mobility, Cisco, shared his insight with us on these topics.

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In our conversation with Al Balasco, Senior Director of Product Management at Radisys, we talked about how VoLTE and Wi-Fi Calling enable a better voice quality, but the new codecs require more processing power, more advanced transcoding capabilities. 

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With VoLTE and Wi-Fi Calling, the role and reach of voice is changing – in the enterprise and among all subscribers, with the adoption of a multitude of devices, apps, services and use models. Terry McCabe, CTO at Mitel and previously at Mavenir, told us about the evolution he sees in the wireless space.

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A conversation with Robert Bichefsky, Senior Manager, and Jagdish Vadalia, Senior Manager, GL Communications, part of our upcoming report "Voice comes to the fore, again. VoLTE and Wi-Fi Calling redefine voice." 

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A conversation with Shyamal Ramachandran, Director of Product Management, Qualcomm Technologies on HD voice, EVS, the role of Wi-Fi Calling, codec evolution and new use cases for voice 

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Gordon Mansfield, Vice President, Radio Access Network and Device Design at AT&T, talked to us about the evolution of voice services at AT&T, following the introduction of VoLTE and Wi-Fi Calling, as well as of new services such as NumberSync.

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