VNFs On Public Cloud Signifies a New Approach for Cash-Strapped Telcos

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By Lian Jye Su | 3Q 2017 | IN-4738


ZTE Puts virtual IMS on AWS


In August 2017, ZTE announced that they have deployed the world’s first carrier-grade vIMS and RCS on Amazon Web Service (AWS). The announcement came after several years of effort by ZTE to create a virtualized network function (VNF) on the public cloud that offers carrier-grade capabilities. This also allows ZTE to expand their network function virtualization (NFV) product portfolio.

ZTE’s vIMS and RCS service runs as virtual machine (VM) on AWS EC2, which means Metaswitch’s Clearwater IMS remains as the industry’s only vIMS in container architecture (which is also open source), before the industry starts to see the emergence of container-based VNFs in the next two years.

Pros and Cons


In the past, rolling out IMS related services, such as RCS, VoLTE and VoWiFi, required the deployment, testing, configuration, and calibration of new network hardware. The movement towards NFV reduces the c…

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