Check out the tutorials and knowledgeable articles at the links below:
For the list of providers and VoIP services tested with Groundwire, see http://www.acrobits.cz/about-us/partners#tab_verified-voip-operators
And check out https://www.acrobits.net/products/retail#tab_softphone for a side by side comparison of the most popular features of Acrobits Softphone and Groundwire.
*Push Notifications for long battery life
*Video Calling – H263, H264 and VP8 codecs
*SIP SIMPLE messaging, with picture, video and other attachments, typing and delivery notifications
*Transfer and attended transfer
*Voicemail Notification and programmable Voicemail dialer
*ZRTP support (through in app purchase), the latest in secure calling for SIP
*Busy Lamp Field
*Call recording (only available for SIP calls, will not record calls from your GSM line)
*Bluetooth headset support
*Quickdial, your favorite contacts only one tap away
*Number rewriting, edit your existing contacts for SIP dialing without creating additional entries and program specific number to be dialed through specific accounts automatically
*in-call quality indicator, see network quality, packet loss and jitter
*Background noise suppression
*Quick import of accounts from major VoIP providers including sipgate, callcentric, voipcheap and many more.
*TLS support for encrypted SIP
*SIP Proxy Support, VPN Support (configure VPN in iOS settings)
*Excellent sound quality, supports OPUS, G.722, G.711, iLBC and GSM. Make an in app purchase to add G.729 for great performance over 3G networks
*SIP Log for troubleshooting
If you have an issue with Groundwire, please contact our support even if you leave a review stating the problem. Groundwire is highly configurable so problems that seem insurmountable may just require a couple of adjustments to the settings.
Groundwire fans, please rate Groundwire or leave a review.
***NOTES – IMPORTANT, PLEASE READ***
SIP – Groundwire is a SIP Client, not a VoIP service. You must have service with a VoIP provider or PBX that supports use on a standard SIP client to use it.
VoIP over 3G – Be aware that some mobile network operators prohibit or restrict the use of VoIP over their network. They may prohibit the use of VoIP or impose additional fees and/or charges when using VoIP over their network. By using Groundwire over 3G, you agree to abide by any restrictions your cellular carrier imposes and agree that Acrobits will not be held responsible for any charges, fees or liability imposed by your carrier for using Groundwire over their 3G network.
Fixed issue with empty multimedia messages