Sipnetic makes it easy to collect to CallToNet. Click on the list of service providers, select CallToNet and enter your login credentials.

Download Sipnetic Android App – IOS Not Available 

Key features
  • Supports calling over 3G/4G and Wi-Fi.
  • Modern UI.
  • Great audio quality provided by the Wideband Opus codec. Legacy codecs, such as G.722, G.711, Speex, and GSM, are also supported.
  • Acoustic echo cancellation and automatic gain control.
  • Video calls using H.264 codec.
  • Support for various NAT traversal techniques, including STUN, TURN, and ICE.
  • Instant Messaging with text and voice chat capabilities.
  • Secure calls based on TLS, SRTP, and ZRTP protocols. End-to-end encryption of chat messages with OTRv3 protocol.
  • Integration with system contacts including built-in contact editor.
  • Presence information support based on the SIMPLE protocol suite.
  • Multiple SIP accounts support with automatic account selection.
  • Ability to quickly configure an account by scanning a QR code.
  • Advanced telephony features: support for multiple calls, placing call on hold, attended transfer, sending DTMF digits, voicemail message waiting indication.
  • Experimental Walkie-Talkie mode well suited for low-bandwidth links.
  • Light and dark UI themes.
  • No ads, no user tracking, no personal data collection.
  • Available in English, German, Russian, and Ukrainian.