Acrobits - softphone

One App to rule them all

Amir Hanan

Groundwire, Business Caliber SIP for Android

Now with Push Notifications

Groundwire, now available on Android!  The hugely successful iOS client is now availble for Android.  With features like call conferencing, transfer and attended transfer, multiline, voicemail notification and many more, Groundwire has all the features a business user on the go needs.  Combined with highly configurable settings and a simple to use interface, Groundwire is a must have for SIP users on Android.  Check Groundwire out on Google Play now. 


  • Push Notifications
  • Multitasking
  • Transfer and attended transfer
  • Multi line
  • Call Waiting
  • Conference Calling
  • Voicemail support, be advised of waiting voicemail and call your voicemail with a single touch
  • Call Forwarding
  • GoogleVoice integration
  • HD wideband audio through G.722
  • Excellent sound quality, includes the G.711 ulaw, alaw and GSM audio codecs.  Make an in app purchase to add G.729 Annex A for great quality over 3G
  • Background noise suppression
  • In-call Quality Indicator, see network quality, packet loss and jitter
  • Address Book Matching to automatically format your incoming numbers to match your existing contacts
  • TLS support for encrypted SIP
  • SRTP, both SDES and ZRTP for secure audio on SIP calls, check out our knowledgebase article for more details
  • Bluetooth support
  • Audio codec manipulation, enabling you to prioritize the codecs used and disable ones you don't want to use with separate settings for wifi and 3G
  • Call recorder and player, seamlessly integrated into the call history
  • Full localization (currently English, Chinese, Danish, Korean, Norwegian, Polish, Portueguese, Swedish, French, German, Italian, Russian, Spanish, Czech and Slovak)
  • Very easy configuration
  • Simultaneous registration of multiple SIP accounts, have multiple accounts registered to receive incoming calls and switch the account used for outgoing calls without leaving the keypad
  • Android contacts integration, easy to call anyone in your contacts via SIP
  • Contacts search function
  • Add new contacts directly from Groundwire
  • Quickdial, your favorite contacts are one touch away
  • Ability to generate DTMF tones while in call, to control various PBX features or automated systems (use audio, rfc2833 or SIP INFO)
  • Speakerphone support
  • Configurable RTP port range
  • IPv4
  • SIP Proxy support, VPN support
  • Quick import of accounts from major VoIP providers, including callcentric, sipgate, voipcheap and many more
  • Phone number resolution, we present the phone numbers in a convenient format with grouped digits, display the flag and country name and even the region/city name for some countries, including USA

Remember, Groundwire is a SIP client.  You will need to have service with a VoIP provider or PBX that supports use on a standard SIP client to use it.

GoogleVoice users:  Though we have integrated GoogleVoice, Groundwire's main use is as a SIP client.  You can set up Groundwire to initiate GoogleVoice calls through other types of numbers, but to get the full functionality of Groundwire, you need to have GoogleVoice linked to a SIP Account.