IMSDroid is the first fully featured open source SIP/IMS client for Android. It is also the only free Android SIP client which supports direct Video Calls.
3GPP IMS (IP Multimedia Subsystem) is the next generation network for delivering IP multimedia services. IMS is standardized by the 3rd Generation Partnership Project (3GPP). IMS services could be used over any type of network, such as 3GPP LTE, GPRS, Wireless LAN, CDMA2000 or fixed line.
The current version of IMSDroid partially implements GSMA Rich Communication Suite release 3 and The One Voice profile V1.0.0 (LTE/4G, also known as GSMA VoLTE) specifications.
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Supported operating systems:
Google Android 1.5, Google Android 1.6, Google Android 10.x, Google Android 2.0, Google Android 2.1, Google Android 2.2, Google Android 2.3, Google Android 3.0, Google Android 3.1, Google Android 3.2, Google Android 4.0, Google Android 4.1, Google Android 4.2, Google Android 4.3, Google Android 4.4, Google Android 5.x, Google Android 6.x, Google Android 7.x, Google Android 8.x, Google Android 9.x
Smart CallBack Smart CallBack - Smile. Talk to your friends for FREE or save up to 90% of your phone bill to any phone anywhere. Download the app and sign up at www.smartcalls.mobi. Just fill in your number and target number, we will connect you. No contract. Works anywhere in the world on both Wi-Fi and 3G. No high roaming charges. Bypass your current operator
3CXPhone (Android) 3CXPhone (Android) is a free VoIP Softphone that works with SIP based IP PBXs such as 3CX or Asterisk and popular VoIP providers. 3CXPhone is not locked to a particular provider so you can switch easily.
What's New in This Release:
· includes support for tablets and has more intuitive in/out of office icon
What's New in 1.3
Daum MyPeople - mVoIP Daum MyPeople - mVoIP - Enjoy group conversation and 1:1 conversation via My People.
Fun and exciting conversation with your people, please meet MyPeople
1) Free calls(mVoIP) & voicemail : Once you and your friends install MyPeople, you can call, text or send voicemails as much as you want.
wowocall inernatinal calls voip dialer wowocall inernatinal calls voip dialer - wowocall international internatinal mobile dialer,which can make this app be adaptive to wifi and 3G, so cost less traffic.
It is support called for 200 countries around the world countries, the quality excellent low price. On the www.wowocall.com website you can add credit
MobileVOIP MobileVOIP - With MobileVoip you can make free* voip calls from your mobile phone. Make calls to any country you desire at the cheapest rates. MobileVoip is currently supported on iPhones, Android phones and Symbian phones. Simply download the free MobileVoip app from one uour APP market and register with one of the supported Voip brands
aSip aSip (formerly known as SipPhone) is first native SIP/VoIP application. All calls are made directly to the SIP provider, no middle-man like customized proxy involved, so no voice delay and call quality is excellent
Voip One Click Voip One Click is an Android app which allows users to make free encrypted VoIP calls. It uses the TLS protocol to encrypt the information call (caller id /called id), and the SRTP protocol to encrypt the audio communication.
Voip One Click enables users to dial and receive mobile voice calls which cannot be intercepted
Acrobits Softphone for Android Acrobits Softphone for Android is a reliable and highly customizable SIP Client for Android. It features status bar notifications, multitasking, Google Voice integration, and more.
Please note that Acrobits Softphone is a SIP Client, not a VoIP service. You must have service with a VoIP provider that supports use on a standard SIP client to use it
EasyCallBack for Android EasyCallBack for Android - EasyCallBack allows you to make cheap international calls via 3G or WiFi from your mobile phone. Simply download the app, create an account, add some credit and start enjoying low-cost calls.
Calling someone is very easy. Start by entering the number you wish to dial. EasyCallBack will call you back and then will connect you to your destination
Other Software by developer «Dooubango»:
IMSDroid IMSDroid is the first fully featured open source SIP/IMS client for Android. It is also the only free Android SIP client which supports direct Video Calls.
3GPP IMS (IP Multimedia Subsystem) is the next generation network for delivering IP multimedia services. IMS is standardized by the 3rd Generation Partnership Project (3GPP)
IMSDroid 1.2.366 IMSDroid 1.2.366 is the first fully featured open source SIP/IMS client for Android. It is also the only free Android SIP client which supports direct Video Calls.
3GPP IMS (IP Multimedia Subsystem) is the next generation network for delivering IP multimedia services. IMS is standardized by the 3rd Generation Partnership Project (3GPP)