VoIP services for retail and business

Mizutech VoIP service (MizuCall) is a reliable VoIP solution for residential, business users or SIP trunking.
Use your existing internet connection to make free VoIP calls or international calls with local tariff rates.


  • free VoIP account and unlimited free VoIP voice calls, video calls and messaging (free from VoIP to VoIP)
  • low cost calls and SMS to mobile and landline worldwide
  • no contract and no monthly fee; no connection or activation fees, no taxes, no hidden charges
  • up to 10 free lines and unlimited free calls between users
  • unlimited lines for SIP trunking or corporate accounts
  • over 40 calling, PBX and call divert VoIP features included (call recording, forwarding, transfer, conference and many others)

*Outbound calls are disabled currently. The service can be used only for user to user calls.
  This service is just a demo of our VoIP server capabilities/usage.


How it works?

  1. Create one (or more) free account here
  2. Use any SIP device to make free calls between your devices or with other Mizutech users
  3. Add credit to your account to be able to make cheap calls to any mobile or landline numbers worldwide

How can I make VoIP calls?

Use any SIP device to make phone calls (softphones, hardware phones, ATA, gateways).
You need to enter the following settings:

  • SIP Domain/Address: voip.mizu-voip.com
  • SIP username: your account username
  • SIP password: your account password
  • All other settings can be left unchanged with default values

For your convenience we have created preconfigured VoIP softphone preconfigured and fine-tuned for our VoIP service:

  • Webphone (call from browser by just typing your username/password)
  • Windows softphone (type your username/password to login)
  • Android softphone or search for "MizuDroid" in the Google Play (type "mizu" for the server setting and then your username/password)
  • iPhone softphone or search for "MizuPhone" in the Apple App Store (type "mizu" for the server setting  and then your username/password)
  • Other possibilities are listed on the right side on this page

Key features

  • free VoIP accounts
  • free VoIP calls
  • free video calls with any video capable device
  • low cost calls to any landline or mobile worldwide
  • pay only for your outbound calls; no recurring costs
  • instantly recharge your account by PayPal
  • access the service with any device (hardware phone, softphone, mobile, web)
  • real time call monitoring and history
  • call forwarding (always, on busy, on no answer)
  • conference calls (unlimited participants)
  • call transfer
  • SMS (easy to compose SMS messages from your PC's keyboard)
  • callback
  • P2P (enter two phone number and it will be interconnected with cheap VoIP costs)
  • file transfer, file sharing, desktop sharing over VoIP
  • encryption (end to end encryption when both endpoints are VoIP)