SIP Introduction & Download Links:

There are many VoIP SIP (Softphone Software) on the Google Play Store, iTunes Store and Windows Market Store. Most of them have ads for the free version. The Extension-N VoIP has tested most SIPs and recommend the following SIPs:

  1. Zoiper: For all smart phones and windows desktop. No Ads for free version, about one time payment of $11.28 for G729a Codec, other payments for more features, Bluetooth support for most devices
  2. Linephone: For all smart phones and windows desktop. No Ads for free version
  3. Media5-fone: Only for Android phones and iPhones. There is an ads for free version, one time payment for more features including no ads, Bluetooth support and conference calls etc.

Visit the webpage through your mobile device and click the above links, click Download button and select your phone type, then the system will automatically transfer to your mobile store if you select download from your mobile store (recommended). After installation, you need to configure your account first. Go to the FAQ for reference. If you want to install the softphone on your desktop, you can visit the page through your desktop, click and download.


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