Fast, modern, secure SIP client

A SIP-based phone to make and receive calls.

UNIVERGE ST500 is the enterprise IP telephony client for Androidsmartphone.

Zoiper is a FREE IAX and SIP softphone application for voip callsover 3G or WiFi. There are NO ADVERTISEMENTS. For support pleasevisit: http://community.zoiper.com Zoiper softphone offers a simpleuser interface and superb audio quality for smooth Voice over IPexperience. Contact us for whitelabel versions with your logo andcompany or for our VoiP SDK if you want to build your own solutionor visit http://www.zoiper.com/en/voip-sdk Available for both SIPand IAX systems, Zoiper is a phone solution perfectly fit for endusers, service providers, call centers or any business willing tobenefit from VoIP communications. Want to distribute it to yourusers ? Use the free automatic provisioning system onhttp://oem.zoiper.com and avoid tedious manual configurations!.IMPORTANT: Zoiper softphone is a standalone client-side softwareVOIP phone application and is not bundled together with a voipservice. To make and receive voip calls using Zoiper, you mustsubscribe to any SIP or IAX based service provider across theglobe. Zoiper's key features include: - Support for different colorschemes - Bluetooth support - Lowest battery usage with highestreliability / stability on google play - Lowest latency of allandroid softphones - Excellent audio quality, even on older devices- Supports calling over 3G and WIFI - Multiprotocol with SIP andIAX support, compatible with all RFC compliant PBXs - Background /multitasking support - Integration with the native android contactlist - Speakerphone mute and hold - UDP and TCP transports (use TCPfor better battery life!) - Supports g711 (ulaw, alaw), speex, iLBCand gsm codecs - Supports sending of DTMF - DNS SRV - Built-in echocancellation - STUN support - Change ringtone per account - Callwaiting - Video support (gold users only) - ZRTP / TLS support(gold users only) - Call Transfer (gold users only) - Widebandaudio (gold users only) Zoiper is also available as customizedbranding solutions or VoIP SDK, please contact us for moreinformation. - Phones that are unstable because they have brokenaudio implementations: Alcatel one touch series (poor audio driverscause system freezes and crashes) HTC one m8 (causes freezes.)WARNING: using Zoiper as a default dialer may interfere withdialing 911 emergency services. WARNING: Please use only versionsfrom the appstore, we have reasons to believe some of the (russian).apk files floating on the web contain a trojan that might stealusername and password and make fraudulent calls. The officialzoiper from google play is safe to use.

Talk, chat, meet, share whether at a desk, on the move, or workfrom home.

Linphone is an open source internet SIP phone or Voice Over IPphone (VoIP).

Cloud phone for Businesses

The leading SIP Client on IOS comes to theAndroid platform.Acrobits Softphone is both intuitive to use and highlyconfigurable. With loads of preconfigured providers, many userswill have their SIP account configured and making calls in lessthan a minute. But Acrobits Softphone also has the highlyconfigurable settings advanced VoIP users and business users need,including support for Secure SIP signaling through TLS, HD audiothrough G.722 and more. Try Acrobits Softphone on Android today andyou'll be telling your friends about it tomorrow.Check out the great features of Acrobits Softphone for Android,with many more to come.•Push Notifications for incoming calls for improved batterylife•Support for use on wifi and 3G networks•backgrounding support with status bar notification; check youremail or other tasks while still available for calls on theSoftphone•quick import of accounts from major VoIP Providers•call recorder and player, seamlessly integrated into the callhistory•Bluetooth headset support•HD Wideband audio through G.722•Secure calling through SRTP (SDES)•ZRTP support (through in app purchase), the latest in securecalling for SIP•excellent sound quality, includes the G.711 (ulaw and alaw) andGSM audio codecs. Make an in app purchase to add G.729 Annex A forgreat quality over 3G networks•TLS support for encrypted SIP•audio codec manipulation, enabling you to prioritize the codecsused and disable ones you don’t want to use•comfortable and super-smooth user interface, fine-tuned speciallyfor Android•easy, intuitive configuration•simultaneous registration of multiple SIP accounts, have multipleaccounts registered to receive incoming calls and switch theaccount used for outgoing calls without leaving the keypad•Android contacts integration. Easy to call anyone in your contactsvia SIP•add new contacts directly from the softphone•ability to generate DTMF tones while in call, to control variousPBX features or automated systems (use audio, rfc 2833 or SIPINFO)•speakerphone support•detailed call history•configurable RTP port range•SIP Proxy support•STUN server support, automatic service discovery using DNS SRVqueries•phone number resolution. We present the phone numbers in aconvenient format with grouped digits, display the flag and countryname and even region/city name for some countries, includingUSAThe Android Market does not make paid apps available in allcountries.  If you're unable to purchase Acrobits Softphone orhave already purchased it through paypal, please visithttp://acrobits.cz for an alternate method to download andinstall.Acrobits Softphone is a SIP Client, not a VoIP provider. It needsto be used in conjunction with a VoIP provider that supports use ona SIP Client to work. Check out our list of verified VoIP operatorsat http://www.acrobits.cz/42/verified-voip-operatorsVoIP over 3G - Be aware that some mobile network operators prohibitor restrict the use of VoIP (Voice over Internet Protocol) overtheir network. They may prohibit the use of VoIP or imposeadditional fees and/or charges when using VoIP over their network.By using Acrobits Softphone over 3G, you agree to abide by anyrestrictions your cellular carrier imposes and agree that Acrobitswill not be held responsible for any charges, fees or liabilityimposed by your carrier for using Acrobits Softphone over their 3Gnetwork.

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Protect your privacy with encrypted phone calls.

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