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About Groundwire: VoIP SIP Softphone

Make voice and video calls, send messages, and more with our military-grade encrypted B2B SIP softphone app. Groundwire is designed for business users looking for more out of their SIP softphone.

Groundwire is preconfigured to support many of the most popular providers. Download Groundwire today to enjoy a more secure B2B experience for all essential business communications. Groundwire delivers high-quality communications, best-in-class security, and a feature-rich, enterprise-like experience for individual users.

Help your business get online and adjusted to remote work with Groundwire without sacrificing on security and accessibility.

What can Groundwire do for you?

- High-quality audio. Experience crystal clear communications. We support Opus, G.722, G.729, G.711, iLBC, and GSM audio formats.

- HD-quality video. Communicate in up to 720p HD. Our app supports both H.264 and VP8.
SMS and rich messaging.

- Let your employees quickly send SMS and rich messages through an intuitive UI.

- Call transfers and conferencing. Keep your essential operations going with built-in call transfers and conferencing.

- Integrated voicemail. Miss an important call? Groundwire comes with a reliable voicemail feature.

- Military-grade encryption. We use a powerful encryption stack that uses SRTP, TLS, and ZRTP (free for incoming calls - paid add-on for outgoing calls) to keep your company's data safe.

- Reduce your battery drain. Leverage the power of push notifications to stay notified and reduce your battery drain.

- Seamless call transition. Make calls using WiFi or your data plan. Groundwire offers seamless transition during the critical handover stage.

- Customize your experience. Groundwire is highly customizable. Customize your SIP settings, the UI, ringtones, and more.

- 5G-friendly. Take advantage of all the benefits 5G has to offer with an SIP softphone that’s built for 5G.

- Multi-device compatibility. Groundwire is compatible with any modern mobile operating system.

- No hidden fees. Don’t worry about hidden fees or subscriptions. Your one time fee provides you with a lifetime license.

- Lifetime support and updates. Each Groundwire license comes complete with lifetime support and unlimited updates.

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author
I have tested the app for a while now. Other apps like csipsimple or bria has have better audio quality. Just getting better. Updating from 4 to 5.
Femi Yusuph
author
Great product, push notifications work ! Text messaging works ! Never missed a call. More stable than Vonage. Using Voip.ms
Pierre Coulombe
author
Best voip soft phone I have used!
Eric Schultz
author
Tried so many others including Bria, Zoiper and a few more and none of them worked as well as Groundwire. Love the native dialer support and also the app actually looks like it was designed for today and not...
Justin Abraham
author
Doesnt use a lot of battery!
Marc Sumi
author
Working perfectly 👌 on all of my family's device's, great SIP application.
Mitchell Jon Pallatte