Global giants agree on standards for voice and SMS over LTE

6 Nov 2009

In a press release, a group of cellular network operating and technology giants have announced that they have agreed on a technical profile for the introduction and delivery of voice and SMS services based on Long Term Evolution (LTE) networks worldwide. Orange, Telefonica, TeliaSonera, Verizon, Vodafone, Alcatel-Lucent, Ericsson, Nokia Siemens Networks, Nokia,Samsung Electronics and Sony Ericsson have jointly developed the ‘One Voice’ initiative, defining an optimal set of existing 3GPP-specified functionalities that network vendors, service providers and handset manufacturers, can use to offer compatible LTE voice/SMS solutions.

The press release continues: ‘Open collaborative discussions have concluded that the IP Multimedia Subsystem (IMS) based solution, as defined by 3GPP, is the most applicable approach to meeting the consumers’ expectations for service quality, reliability and availability when moving from existing circuit switched telephony services to IP-based LTE services. This approach will also open the path to service convergence, as IMS is able to simultaneously serve broadband wireline and LTE wireless networks. By following the jointly defined technical profile, the industry can help guarantee international roaming and interoperability for LTE voice and SMS services, ensuring subscribers continuity of these vital services – all while offering service providers a smooth and well-defined path to LTE.’

‘The objective of the initiative is to ensure the widest possible ecosystem for LTE and to avoid fragmentation of technical solutions. LTE will, with this initiative, not only serve as a broadband access for increasing data traffic, but also for continuing voice and SMS services. Network operators will be able to more quickly develop their customized LTE ecosystem in collaboration with both network equipment vendors and device manufacturers. In addition, the reassurance of global interoperability in an LTE voice landscape and the ability to offer both broadband access and telephony services over LTE will create strong foundations for future business. The objective is to hand over the profile and continuing work to existing industry forums.’

To view the technical profile, visit