Press Release

January 9, 2018

GCT and Ecrio Partner to Deliver VoLTE Over Cat-M1

Ecrio’s iotaTM  VoLTE Software to Integrate with GCT’s Hybrid IoT Solution

LAS VEGAS, January 09, 2018 – Ecrio, the leading provider of LTE real time communications client software, and GCT Semiconductor, a leading designer and supplier of advanced 4G mobile semiconductor solutions, announced today their partnership to deliver VoLTE over Cat-M1. Ecrio’s iota, the highly optimized VoLTE software for IoT, will be integrated into GCT’s GDM7243i system-on-a-chip LTE solution.

Built on the FlexIMS™ architecture, Ecrio’s iota brings security, messaging & communication to the Internet of Things (IoT). iota is compliant with IMS/VoLTE standards targeting LTE Cat-M1 devices. It is ideal for resource limited devices such as wearables, PoS terminals, parking meters and alarm panels requiring voice calling capability. iota is optimized for Real Time OS (RTOS) and fully leverages Ecrio’s deep expertise in IMS and VoLTE with over a decade of product deployments across device platforms.

GCT Semiconductor’s GDM7243i is optimized for IoT applications and supports two complementary connectivity modes including LTE Category M1, NB1 and EC-GSM, as well as Sigfox wireless IoT connectivity, making it a “hybrid” solution offering superior connectivity options for IoT applications with zero bill of materials (BOM) cost increase. With its ultra long battery life, GDM7243i is ideally suited for IoT devices for applications such as tracking, wearables, security, agriculture, healthcare, industrial and more.

“We are pleased to extend our partnership with GCT to deliver our VoLTE for IoT solution,” said Michel Gannage, Founder and CEO of Ecrio. “With our iota solution embedded in the GDM7243i, we look forward with GCT to enable new and innovative voice services targeting low power wide-area LTE networks.”

“Ecrio has been an excellent longtime partner for enabling IMS/VoLTE capabilities across our LTE chipset offerings,” said John Schlaefer, CEO of GCT Semiconductor, Inc. “By adopting the iota solution, we are looking forward to substantially speeding up time-to-market of VoLTE for Cat-M1 devices, and meeting the demand for an increasing number of mobile operators requiring IoT voice services”

About Ecrio

Ecrio is the leading supplier of 4G/LTE real time communications client software. Ecrio offers a comprehensive suite of standards compliant (3GPP, GSMA) Communications Client Solutions including Advanced Messaging, Rich Communication Services (RCS), Voice and Video over LTE (VoLTE/ViLTE), and WiFi Calling. Built on the patented FlexIMSTM Architecture, Ecrio solutions can be deployed on chip (iota), on devices (MCCS) or in the cloud (nimbus). Ecrio’s customers include industry Tier 1 operators, leading device makers and chipset platform providers. For more information, please visit

About GCT Semiconductor, Inc. 

GCT Semiconductor is a leading fabless designer and supplier of advanced 4G LTE semiconductor solutions. GCT’s market-proven LTE solutions have enabled fast and reliable LTE connectivity to numerous commercial devices such as smartphones, tablets, hotspots, USB dongles, routers, M2M applications, etc., for the world’s top LTE carriers. GCT also offers a new LTE solution optimized for the Internet of Things (IoT). GCT’s system-on-chips integrate radio frequency, baseband modem and digital signal processing functions, therefore offering complete 4G platform solutions with small form factors, low power consumption, high performance, high reliability and cost effectiveness. For more information, visit