N & K VoIP is a FREE SIP softphone application for Voice Over IP phone (VoIP) calls over 3G or WiFi which offers a simple user interface and superb audio quality for smooth Voice over IP experience.
N & K VoIP is next generation Softphone dialer comes with dual functionality of VoIP calling card and App to App Chatting(Instant Messaging). N & K VoIP Dialer is equipped with advanced cutting-edge features, which are best suited for service providers to offer simplified and user-friendly VoIP calling card and App to App Chatting (Instant Messaging) facilities to their customers.
N & K VoIP Dailer Android Smartphone Edition SIP-based Softphone – brought to you by N & K VoIP, the market leader of VoIP software products and solutions.
N & K VoIP key features include:
* Work with all standard SIP SoftSwitches
* Supported crypto : TLS for SIP and SRTP/ZRTP for media
* Support UDP and TCP transports
* HD audio codecs including G729, G.722, g711 (ulaw, alaw), speex,iLBC, GSM, PCMU Codecs Support.
* High Compression ratio for Signalling and Media Streams.
* Integration with the native android Phone Book (App syncs automatically your phone contact for easy dial)
* Support Call Recording, Call Waiting, Call Transfer
* Bluetooth support.
* Speakerphone mute and hold support
* Supports sending of DTMF
* Make and receive high quality phone call using 3G, 4G, LTE and WiFi
* Supports calling over 3G and WIFI
* Excellent audio quality with HD audio codecs
* User Friendly, Advanced and Smoother GUI
* WiFi or internet connection required