Groundwire Downloads & RevenueGroundwire: VoIP SIP Softphone · App Store & Google Play
Groundwire: VoIP SIP Softphone gets 100+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Groundwire: VoIP SIP Softphone by Acrobits is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
Groundwire: VoIP SIP Softphone update history & changes
Last change · 57 events since 17 Aug 2010Full timeline ↓Full timeline · 57 events
- 🌟Groundwire: VoIP SIP Softphone featured by AppleiOSapps · IT
- 🌟Groundwire: VoIP SIP Softphone featured by AppleiOSapps · NL
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.21iOS- Fixed incoming calls occasionally going on hold
- Improved translations in Account Settings - 🌟Groundwire: VoIP SIP Softphone featured by AppleiOSapps · NL
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.51Android- Various bug fixes
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.20iOS- Improved the layout on iPhone Duo
- 📈Groundwire: VoIP SIP Softphone entered the top 100 in 6 chartsAndroidTop Paid · All Apps · IN · Top Paid · All Apps · MX · Top Paid · All Apps · NL · Top Paid · All Apps · TH · +2 more
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · TH
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · AR
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.47Android- Various bug fixes
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.19iOS- Stability improvements and minor bug fixes
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · ZA
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.46Android- Fixed number-formatting issues
- Fixed several crashes
- Fixed broken built-in ringtones
- Fixed an issue where notifications could display the wrong sender - 📦Groundwire: VoIP SIP Softphone updated to version 26.1.18iOS- Fixed duplicate missed-call notifications
- 📦Groundwire: VoIP SIP Softphone: now updating weeklyiOS4 updates in 30 days, after a quiet two months
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · BR
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.15iOS- Improved back-to-call behavior in the app
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · PH
- 📈Groundwire: VoIP SIP Softphone entered the top 10 in 2 chartsiOSTop Paid · Productivity · MY · Top Paid · Productivity · ZA
- 📈Groundwire: VoIP SIP Softphone entered the top 10AndroidTop Paid · Communication · TH
- 📦Groundwire: VoIP SIP Softphone: now updating weeklyAndroid4 updates in 30 days, after a quiet two months
- 📈Groundwire: VoIP SIP Softphone entered the top 10iOSTop Paid · Productivity · PL
- 📈Groundwire: VoIP SIP Softphone entered the top 10 in 3 chartsAndroidTop Paid · Communication · MX · Top Paid · Communication · NL · Top Paid · Communication · TR
- 📈Groundwire: VoIP SIP Softphone entered the top 10 in 2 chartsiOSTop Paid · Productivity · CO · Top Paid · Productivity · PH
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.35Android- Various bug fixes and stability improvements
- 📈Groundwire: VoIP SIP Softphone entered the top 10AndroidTop Paid · Communication · VN
- 📈Groundwire: VoIP SIP Softphone charting in a new country in 5 chartsAndroidMexico · Netherlands · Thailand · Turkey · +1 more
- 📈Groundwire: VoIP SIP Softphone entered the top 10iOSTop Paid · Productivity · SE
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.12iOS- Fixed DTLS 1.2 transcript hashing issue
- Fixed a crash when opening the app after updating to 26.1.8 - ✏️Groundwire: VoIP SIP Softphone: description updatediOS· FR
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · DE
- ✏️Groundwire: VoIP SIP Softphone: description updatediOS· 21 countries
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.31Android- Android telecom improvements
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.8iOS- Added support for attended transfers while the consultation call is still ringing
- Fixed canceled calls appearing as failed calls
- Fixed duplicate missed-call notifications after scheduled Do Not Disturb
- Fixed the Contacts permission prompt interfering with age verification
- Fixed Backup and Restore functionality
- Fixed call-screen controls not appearing
- Improved translations
- Removed a redundant button from the Restore Configuration dialog… more - 📈Groundwire: VoIP SIP Softphone hit #1AndroidTop Paid · Communication · JP
- 📈Groundwire: VoIP SIP Softphone entered the top 10AndroidTop Paid · All Apps · JP
- 📈Groundwire: VoIP SIP Softphone new best rank in the overall chart: #98AndroidTop Paid · All Apps · AE
- 📈Groundwire: VoIP SIP Softphone new best rank in the overall chart: #8AndroidTop Paid · All Apps · JP
- 📈Groundwire: VoIP SIP Softphone entered the top 100 in 3 chartsAndroidTop Paid · All Apps · AE · Top Paid · All Apps · ID · Top Paid · All Apps · SA
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · ES
- 📈Groundwire: VoIP SIP Softphone entered the top 10iOSTop Paid · Productivity · TH
- 📈Groundwire: VoIP SIP Softphone entered the top 100AndroidTop Grossing · Communication · JP
- 📈Groundwire: VoIP SIP Softphone charting in a new countryAndroidJapan
- 📈Groundwire: VoIP SIP Softphone entered the top 10 in 2 chartsiOSTop Paid · Productivity · MX · Top Paid · Productivity · US
- 🌟Groundwire: VoIP SIP Softphone: featuring lifted it to #97 (from outside the chart)iOS有料アプリランキング · JP
- 📦Groundwire: VoIP SIP Softphone updated to version 26.1.26Android- Added a new setting to enable or disable the DND switch
- Fixed ringback behavior
- Fixed several crashes and improved stability
- Fixed notification badge updates
- Improved audio performance
- Improved call handling, including second calls, forwarding, and outgoing call redirection
- Improved call screen reliability and call integration… more - 📈Groundwire: VoIP SIP Softphone new best rank in the overall chart: #115AndroidTop Paid · All Apps · AE
- 🌟Groundwire: VoIP SIP Softphone featured by AppleiOSapps · JP
- 📈Groundwire: VoIP SIP Softphone hit #1iOSTop Paid · Productivity · AE
- 📈Groundwire: VoIP SIP Softphone new best rank in the overall chart: #118AndroidTop Paid · All Apps · AE
- 🆕Groundwire: VoIP SIP Softphone first spotted by AppInsiderAndroidSaudi Arabia
- 📈Groundwire: VoIP SIP Softphone new best rank in the overall chart: #152AndroidTop Paid · All Apps · ID
- 🆕Groundwire: VoIP SIP Softphone first spotted by AppInsideriOS#7 in Top Paid · Productivity · United Kingdom
- 📦Groundwire: VoIP SIP Softphone version 26.1.12Android- Adding support for Android 16
- Made audio route switching more robust and reliable across diverse hardware setups
- Fixed an issue where incoming notifications could become stuck
- Fixed user still being in conference call after splitting it
- Added the option to export call history to a CSV file
- Fixed resuming held call from Android Auto
- Added allow diversion header switch to Groundwire settings… more - 📦Groundwire: VoIP SIP Softphone version 25.3.101iOSNo release notes
- 🆕Groundwire: VoIP SIP Softphone released on Google PlayAndroid
- 🆕Groundwire: VoIP SIP Softphone released on the App StoreiOS
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Groundwire: VoIP SIP Softphone at a glance
AI summary written from our chart and store data, 2026-11-08. It can be wrong: check the numbers above.
A one-time purchase SIP softphone client for iOS that enables voice, video, and messaging via existing PBX or VoIP providers without subscription fees. The app holds top-5 paid productivity rankings in Japan, the Netherlands, Germany, Italy, Canada, and South Africa, indicating strong adoption among business users seeking alternatives to subscription-based communication tools.
Similar apps: Zoiper, Bria Mobile, Linphone
App Store
App details
App privacy Measured
Groundwire: VoIP SIP Softphone’s App Store privacy label declares 0 data categories used to track you across other companies’ apps and websites, 0 linked to your identity and 3 collected anonymously.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Google Play
App details
Groundwire: VoIP SIP Softphone downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | 100+ | 10k+ |
| Google Play | 10+ | 50k+ Measured |
| Total | 100+ Confidence | 100k+ Confidence |
How this is calculated
Where Groundwire: VoIP SIP Softphone's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #3 | 28 of 30 countries | – | – |
| Google Play | #4 | 9 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 3.8 ★ | 121 |
| Google Play | 2.9 ★ | 746 79 written reviews |
| Both stores | 3.0 ★ weighted by ratings | 867 |
What users say about Groundwire: VoIP SIP Softphone
From the 52 most recent App Store reviews in the US.
Long-term users praise the app's reliability and advanced SIP features, but recent updates have caused significant frustration due to broken functionality and data loss. Complaints focus heavily on notification failures, interface regressions, and a lack of iPad support.
Mixed (44% of recent reviews give 4–5 stars). People like it for its features and content, and being useful. The main complaints are about price and subscriptions, and recent updates. Recent reviews are more positive than earlier ones.
What people like
- Features & content: “I do have a feature request:”
- Useful: “Works great with a home lab”
- Login & account: “I LOVE IT I also like how easy it is to disable an account with just a tap in settings”
- Price & subscription: “I don’t wanna pay $X for so and so app again” - no way, this is a necessity”
Common complaints
- Price & subscription: “Too expensive for what it delivers”
- Updates: “April 9 update broke SIP accounts”
- Login & account: “April 9 update broke SIP accounts”
- Crashes & bugs: “Bugs reported but never fixed”
About Groundwire: VoIP SIP Softphone
Groundwire is a SIP softphone app from Acrobits, a leader in VoIP and communication software since 2009. It delivers clear voice and video calls for personal and professional use, with an interface built for daily calling and none of the clutter.
IMPORTANT, PLEASE READ
Groundwire is a SIP client, not a VoIP service. You need service from a VoIP provider or PBX that supports standard SIP clients.
Business calling features
Groundwire carries the call handling you expect from a desk phone:
- Group calls, for conferencing several people into one conversation.
- Attended transfers, so you can announce a caller before handing the call over.
- Unattended transfers, when the caller just needs the right extension.
- Voicemail with notifications, so a missed call still reaches you.
- Instant messaging, for the things that do not need a call.
- Per-account settings, so one device carries several SIP identities cleanly.
Works with your PBX or VoIP provider
Groundwire is a universal client and true VoIP for PBX users. Teams run it as an Asterisk softphone, a FreePBX extension, or a 3CX endpoint, and it connects just as readily to hosted PBX systems and business phone providers. It also comes preconfigured for major providers, so setup takes minutes. Because it is a standard client, there is no lock-in: bring the account you already have, and Groundwire becomes the mobile extension of your PBX, with encrypted SIP calling on every network.
On a team it is the business softphone dialer sitting on top of the PBX you already pay for. On your own it keeps a work line separate, or carries a desk extension in your pocket.
Key features of the softphone
- Audio on widely used codecs, Opus, G.729 and G.711 among them.
- Video calls at 720p HD, carried by H.264 and VP8.
- Private conversations with military-grade encryption, including TLS, SRTP, and ZRTP.
- Low battery use thanks to efficient push notifications.
- The VoIP dialer hands calls over between WiFi and mobile data without dropping them.
- Custom call settings, UI, and ringtones per account.
- 5G ready and compatible with most mobile operating systems.
A softphone app without the fees
Groundwire is a softphone for calling over WiFi and mobile data, with the business dialer features that usually cost a monthly fee. One payment, no subscription, nothing hidden: buy it once and it stays yours. Encryption sits inside that price rather than on top of it.
Run a call center, manage a fleet of extensions, or keep a dependable sip phone for a home office. The same app covers all of it, without extra tiers.
Download Groundwire and put a dependable SIP dialer on your phone, with Acrobits engineering and responsive support behind it.
Groundwire: VoIP SIP Softphone App Store
Groundwire: VoIP SIP Softphone gets 100+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Groundwire: VoIP SIP Softphone is #5 in Productivity Paid in Japan and charting in 28 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
Groundwire: VoIP SIP Softphone at a glance
AI summary written from our chart and store data, 2026-11-08. It can be wrong: check the numbers above.
A one-time purchase SIP softphone client for iOS that enables voice, video, and messaging via existing PBX or VoIP providers without subscription fees. The app holds top-5 paid productivity rankings in Japan, the Netherlands, Germany, Italy, Canada, and South Africa, indicating strong adoption among business users seeking alternatives to subscription-based communication tools.
Similar apps: Zoiper, Bria Mobile, Linphone
Groundwire: VoIP SIP Softphone on the App Store
App details
App privacy Measured
Groundwire: VoIP SIP Softphone’s App Store privacy label declares 0 data categories used to track you across other companies’ apps and websites, 0 linked to your identity and 3 collected anonymously.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Groundwire: VoIP SIP Softphone downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where Groundwire: VoIP SIP Softphone's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Retention · share of new users still active
Time spent · per daily user
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| ProductivityPaid | #5 | |
| ProductivityPaid | #17 | |
| ProductivityPaid | #6 | |
| ProductivityPaid | #11 | |
| ProductivityPaid | #3 | |
| ProductivityPaid | #13 | |
| All AppsPaid | #167 | |
| ProductivityPaid | #21 | |
| ProductivityPaid | #11 | |
| ProductivityPaid | #15 | |
| ProductivityPaid | #7 | |
| ProductivityPaid | #20 | |
| All AppsPaid | #124 | |
| ProductivityPaid | #10 | |
| ProductivityPaid | #27 | |
| ProductivityPaid | #16 | |
| ProductivityPaid | #20 | |
| ProductivityPaid | #23 | |
| ProductivityPaid | #31 | |
| ProductivityPaid | #19 | |
| ProductivityPaid | #8 | |
| All AppsPaid | #60 | |
| ProductivityPaid | #70 | |
| All AppsPaid | #143 | |
| ProductivityPaid | #24 | |
| All AppsPaid | #189 | |
| All AppsPaid | #154 | |
| ProductivityPaid | #93 | |
| ProductivityPaid | #40 | |
| ProductivityPaid | #57 | |
| ProductivityPaid | #37 | |
| ProductivityPaid | #61 | |
| ProductivityPaid | #94 | |
| ProductivityPaid | #101 |
Apps near Groundwire: VoIP SIP Softphone on the chart
Productivity Paid, around #5.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Groundwire: VoIP SIP Softphone
From the 52 most recent App Store reviews in the US.
Long-term users praise the app's reliability and advanced SIP features, but recent updates have caused significant frustration due to broken functionality and data loss. Complaints focus heavily on notification failures, interface regressions, and a lack of iPad support.
Mixed (44% of recent reviews give 4–5 stars). People like it for its features and content, and being useful. The main complaints are about price and subscriptions, and recent updates. Recent reviews are more positive than earlier ones.
What people like
- Features & content: “I do have a feature request:”
- Useful: “Works great with a home lab”
- Login & account: “I LOVE IT I also like how easy it is to disable an account with just a tap in settings”
- Price & subscription: “I don’t wanna pay $X for so and so app again” - no way, this is a necessity”
Common complaints
- Price & subscription: “Too expensive for what it delivers”
- Updates: “April 9 update broke SIP accounts”
- Login & account: “April 9 update broke SIP accounts”
- Crashes & bugs: “Bugs reported but never fixed”
About Groundwire: VoIP SIP Softphone
Groundwire is a SIP softphone app from Acrobits, a leader in VoIP and communication software since 2009. It delivers clear voice and video calls for personal and professional use, with an interface built for daily calling and none of the clutter.
IMPORTANT, PLEASE READ
Groundwire is a SIP client, not a VoIP service. You need service from a VoIP provider or PBX that supports standard SIP clients.
Business calling features
Groundwire carries the call handling you expect from a desk phone:
- Group calls, for conferencing several people into one conversation.
- Attended transfers, so you can announce a caller before handing the call over.
- Unattended transfers, when the caller just needs the right extension.
- Voicemail with notifications, so a missed call still reaches you.
- Instant messaging, for the things that do not need a call.
- Per-account settings, so one device carries several SIP identities cleanly.
Works with your PBX or VoIP provider
Groundwire is a universal client and true VoIP for PBX users. Teams run it as an Asterisk softphone, a FreePBX extension, or a 3CX endpoint, and it connects just as readily to hosted PBX systems and business phone providers. It also comes preconfigured for major providers, so setup takes minutes. Because it is a standard client, there is no lock-in: bring the account you already have, and Groundwire becomes the mobile extension of your PBX, with encrypted SIP calling on every network.
On a team it is the business softphone dialer sitting on top of the PBX you already pay for. On your own it keeps a work line separate, or carries a desk extension in your pocket.
Key features of the softphone
- Audio on widely used codecs, Opus, G.729 and G.711 among them.
- Video calls at 720p HD, carried by H.264 and VP8.
- Private conversations with military-grade encryption, including TLS, SRTP, and ZRTP.
- Low battery use thanks to efficient push notifications.
- The VoIP dialer hands calls over between WiFi and mobile data without dropping them.
- Custom call settings, UI, and ringtones per account.
- 5G ready and compatible with most mobile operating systems.
A softphone app without the fees
Groundwire is a softphone for calling over WiFi and mobile data, with the business dialer features that usually cost a monthly fee. One payment, no subscription, nothing hidden: buy it once and it stays yours. Encryption sits inside that price rather than on top of it.
Run a call center, manage a fleet of extensions, or keep a dependable sip phone for a home office. The same app covers all of it, without extra tiers.
Download Groundwire and put a dependable SIP dialer on your phone, with Acrobits engineering and responsive support behind it.
Latest updates
Store changes
What Groundwire: VoIP SIP Softphone changed on its store page: name, icon, screenshots, price, size, languages, requirements.
More from Acrobits
Groundwire: VoIP SIP Softphone Android
Groundwire: VoIP SIP Softphone gets 100+ downloads a day worldwide (AppInsider estimate, November 2026, rounded down to a band).
Groundwire: VoIP SIP Softphone is #4 in Communication Paid on Google Play in India and charting in 9 of 23 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
Groundwire: VoIP SIP Softphone at a glance
AI summary written from our chart and store data, 2026-11-05. It can be wrong: check the numbers above.
A paid SIP softphone client for Android that enables users to connect existing VoIP accounts or PBX systems (like Asterisk, FreePBX, 3CX) to their mobile device for business-grade voice and video calling. The app holds a consistent #4 position in the Paid Communication category across diverse markets including the Netherlands, India, Saudi Arabia, Thailand, UAE, Vietnam, Mexico, Turkey, and Indonesia, indicating strong niche demand for professional VoIP tools despite a moderate user rating of 2.86.
Similar apps: Zoiper, Bria Mobile, Linphone
Groundwire: VoIP SIP Softphone on Google Play
App details
Groundwire: VoIP SIP Softphone downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where Groundwire: VoIP SIP Softphone's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| CommunicationPaid | #4 | |
| All AppsPaid | #100 | |
| All AppsPaid | #100 | |
| All AppsPaid | #99 | |
| All AppsPaid | #100 | |
| All AppsPaid | #99 | |
| All AppsPaid | #99 | |
| All AppsPaid | #101 | |
| All AppsPaid | #100 | |
| All AppsPaid | #100 | |
| CommunicationGrossing | #169 | |
| CommunicationGrossing | #172 | |
| CommunicationGrossing | #168 | |
| CommunicationGrossing | #162 |
Apps near Groundwire: VoIP SIP Softphone on the chart
Communication Paid, around #4.
Ratings
Google Play, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Groundwire: VoIP SIP Softphone
From the 67 most recent Google Play reviews in the US.
Users praise the app's reliability and battery efficiency when functioning correctly, but recent updates have caused severe regressions in audio quality, Bluetooth connectivity, and call stability. Critical bugs such as silent outgoing calls, broken push notifications, and interface issues are driving a wave of negative reviews despite the developer's history of responsive support.
Mixed but leaning positive (61% of recent reviews give 4–5 stars). People like it for regular updates, and being useful. The main complaints are about crashes and bugs, and recent updates.
What people like
- Updates: “No dial tone since the recent update”
- Useful: “I highly recommend the app for isp softphone”
- Price & subscription: “This app is worth paying for”
- Features & content: “I personally love that option”
Common complaints
- Crashes & bugs: “Broken in the latest version and was running previously”
- Updates: “with the last update, I see no stability at all”
- Login & account: “Now all i get when opening the app is the age verification”
- Speed & performance: “I am currently having issues with this not loading”
About Groundwire: VoIP SIP Softphone
Groundwire is a SIP softphone app from Acrobits, a leader in VoIP and communication software since 2009. It delivers clear voice and video calls for personal and professional use, with an interface built for daily calling and none of the clutter.
IMPORTANT, PLEASE READ
Groundwire is a SIP client, not a VoIP service. You need service from a VoIP provider or PBX that supports standard SIP clients.
Business calling features
Groundwire carries the call handling you expect from a desk phone:
- Group calls, for conferencing several people into one conversation.
- Attended transfers, so you can announce a caller before handing the call over.
- Unattended transfers, when the caller just needs the right extension.
- Voicemail with notifications, so a missed call still reaches you.
- Instant messaging, for the things that do not need a call.
- Per-account settings, so one device carries several SIP identities cleanly.
Works with your PBX or VoIP provider
Groundwire is a universal client and true VoIP for PBX users. Teams run it as an Asterisk softphone, a FreePBX extension, or a 3CX endpoint, and it connects just as readily to hosted PBX systems and business phone providers. It also comes preconfigured for major providers, so setup takes minutes. Because it is a standard client, there is no lock-in: bring the account you already have, and Groundwire becomes the mobile extension of your PBX, with encrypted SIP calling on every network.
On a team it is the business softphone dialer sitting on top of the PBX you already pay for. On your own it keeps a work line separate, or carries a desk extension in your pocket.
Key features of the softphone
- Audio on widely used codecs, Opus, G.729 and G.711 among them.
- Video calls at 720p HD, carried by H.264 and VP8.
- Private conversations with military-grade encryption, including TLS, SRTP, and ZRTP.
- Low battery use thanks to efficient push notifications.
- The VoIP dialer hands calls over between WiFi and mobile data without dropping them.
- Custom call settings and ringtones per account.
- 5G ready and compatible with most mobile operating systems.
Enjoy calls that feel like a natural part of your Android phone. Groundwire works with Android's built-in calling features for a smooth, familiar experience, and routes audio intelligently between your phone, speaker, wired headset and connected Bluetooth devices. With your permission, it can also add Groundwire calls to the Phone app's Recents list, so your call history stays easy to find in one place.
A softphone app without the fees
Groundwire is a softphone for calling over WiFi and mobile data, with the business dialer features that usually cost a monthly fee. One payment, no subscription, nothing hidden: buy it once and it stays yours. Encryption sits inside that price rather than on top of it.
Run a call center, manage a fleet of extensions, or keep a dependable sip phone for a home offi
What's new in 26.1.51
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