Metaswitch and TeleStax Offer Cloud-Based IMS Core With Web APIs

Service providers can embrace Network Functions Virtualization (NFV) more quickly and capably with this innovative recipe for value-added services

PRESS RELEASE: LONDON (12/3/2013)- Metaswitch has partnered with TeleStax, Inc., to jointly offer the RestComm application server with Project Clearwater, Metaswitch’s open-source IMS-in-the-cloud platform.

RestComm is designed to engage mainstream Web and mobile app developers so they can build applications that leverage core telco network assets to enrich user experiences with voice, video and messaging. It exposes APIs identical to those of Twilio, so developers familiar with that environment are immediately at home with RestComm. It is part of the Mobicents open-source community of telecom middleware projects, which was founded by TeleStax in 2003. RestComm runs atop Project Clearwater, a scalable, flexible, open-source SIP communications engine that can be a key building block for carriers wanting to deliver voice, video and messaging services.

The margins for basic telco voice and SMS services are shrinking and, at the same time, several over-the-top Internet competitors are capturing revenues and subscribers for IP-based communications services. As this is happening, telcos are seeing the need to become more innovative and they’re becoming aware that application developers are critical to their growth and profitability.

RestComm and Project Clearwater are both designed from the ground up to run in cloud environments, an important step in the telecom industry’s move toward Network Function Virtualization (NFV), which embraces building out networks and services using software appliances running on commercial-off-the-shelf server and switching hardware.

“We are seeing strong demand for RestComm from top-tier operators and aggregators around the world,” says Ivelin Ivanov, CEO of TeleStax. “Project Clearwater is a great choice as an IMS core and comes around at a time when more of these telcos are shifting from pilot to production with their IMS core implementations.”

“I think there are a lot of opportunities for telcos to develop specialized services for Fortune 500 companies,” says Dave Reekie, head of the open source business unit at Metaswitch. “Instead of moving slowly using legacy technologies, a telco can move fast and get started on NFV at the same time by running a communications platform-as-a-service — like TeleStax’s RestComm, for example — on top of Project Clearwater, an IMS core in the cloud.”

About Metaswitch

Metaswitch is powering the transition of communication networks into a cloud-based, software-centric future. The company develops openly programmable solutions that run on standard hardware or in virtualized environments and act as the key control points in elastic voice, video and data networks. In its 30-year history, Metaswitch has helped hundreds of service providers worldwide advance their infrastructures, retain their customers, extend their brands and reduce their costs through every major network transformation. For more information, please visit

Socialize with Metaswitch on TwitterLinkedInGoogle+YouTube and Facebook.

About TeleStax

TeleStax’s mission is to remove complexity from the traditional telecom infrastructure and in the process create a new market for innovative communications services built by mainstream developers at a cost and time comparable to building Web services. For more information, please visit:

Socialize with Telestax on TwitterLinkedIn Google+YouTube and Facebook.

Press and analysts, please contact:

Phil Harvey

Metaswitch Networks

Ivelin Ivanov

TeleStax, Inc.

Twilio is a trademark of Twilio, Inc. All other trademarks are property of their respective owners.

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