Telefonica Demos Voice Call Handover from VoLTE to 3G Network
Published on: 7th Feb 2013
Note -- this news article is more than a year old.
Telef nica says that it has become the first network operator to demonstrate live handover from a Voice over LTE (VoLTE) to a 3G or GSM network without interruption.
This handover was achieved in Germany in a test laboratory environment that simulates that of a real mobile network.
While there has been recent progress with VoLTE technology in South Korea and the United States, today's LTE networks are not able to handover a VoLTE voice call to 2G or 3G when moving out of LTE coverage. This means most networks fall back to a legacy 2G/3G network whenever they make or receive a voice call or as it is the case with South Korea stay within the LTE network.
Telefónica's engineers in Germany have demonstrated the SRVCC standard (Single Radio Voice Call Continuity) allows for the handover of a VoLTE call from the LTE network to 3G.
Telefónica Deutschland is the first network provider in the world to demonstrate handover of LTE calls to 3G using SRVCC, with components from several different suppliers, corresponding to actual conditions in today's mobile communication networks. Handsets and network components from at least six different manufacturers have been used, including Acme Packet, Ericsson, Huawei, NSN, Qualcomm and Sony Mobile.
Future benefits of VoLTE could include HD voice services, faster call set-up, HD video calling, chat applications and other rich-media services from any device or location.