Monday, November 4, 2013

LTE: Japan: SoftBank Mobile Selects Ericsson's Voice over LTE (VoLTE)

LTE: Japan: SoftBank Mobile Selects Ericsson's Voice over LTE  (VoLTE)


Japan's SoftBank Mobile has selected Ericsson to provide and integrate its end-to-end network solution for voice over LTE (VoLTE). With VoLTE as a basis, consumers will get HD voice and video calling alongside other telephony services, while using simultaneous LTE data services on LTE smartphones.

The VoLTE infrastructure will also enable additional new enriched communication services, and will serve as the basis for SoftBank's future network virtualization plans and Telecom Cloud introduction.

Ericsson is upgrading SoftBank Mobile's existing mobile core network (Ericsson Mobile Softswitch Solution and Evolved Packet Core) with a complete IMS core, which includes the Multimedia Telephony Application Server (MTAS). SoftBank Mobile's Ericsson-based LTE network is also being upgraded with new VoLTE software.


Until nationwide LTE coverage is deployed, seamless handover of ongoing voice calls from LTE to WCDMA is needed to ensure uninterrupted voice services as the user moves out of LTE coverage. Ericsson will also deploy this end-to-end network handover functionality, SRVCC (Single Radio Voice Call Continuity).

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