MicroSIP

3.21.4 VoIP phone app for Windows

Fernando Ortega

Lightweight and portable VoIP phone software for making high-quality voice and video calls over the Internet.

Make voice-over-IP calls and manage contacts with virtually any VoIP provider or server directly from the PC or communicate with text messages.

MicroSIP is a free and open source VoIP app and modem software, developed by MicroSIP for Windows.

The download has been tested by an editor here on a PC and a list of features has been compiled; see below.

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High quality VoIP calls via SIP

MicroSIP is a simple and easy-to-use utility that allows you to make high quality VoIP calls via the open SIP protocol.

Now, you can register a SIP account and use it with MicroSIP. You'll get free person-to-person calls and cheap international calls.

You will be able to customize the application by setting the ring tone, as well as the speakers and microphone.

Features of MicroSIP

  • Address book: Store contacts and manage them easily.
  • Audio: High-quality sound with echo cancellation.
  • Call forwarding: Automatically forward incoming calls.
  • Call transfer: Transfer calls to other contacts on the network.
  • Codecs: Support for G.711, GSM, Speex and iLBC codecs.
  • Conference calls: Create conference calls with multiple participants.
  • DTMF: Send DTMF (Dual Tone Multi Frequency) tones over the network.
  • Encryption: Secure VoIP calls with SRTP and TLS.
  • Logging: Log all calls for better management and auditing.
  • Multi-line: Make and receive multiple calls simultaneously.
  • NAT traversal: Support for NAT traversal through STUN.
  • Security: Set up secure connections and protect calls.
  • Video: Make video calls with H.264 and H.263 video codecs.
  • VoIP: Make and receive VoIP calls using SIP protocol.
  • Voice messages: Leave voice messages for contacts who are not available.

Compatibility and License

Is MicroSIP free?

MicroSIP is available for free and released under the open source GPLv2 license on Windows from modem and telephony software. The license provides the options to freely download, install, run and share this program without any restrictions. The source code for MicroSIP should be freely available and modifications are certainly permitted as well as the option to inspect the software.

MicroSIP accepts donations for the continued development of this free software.

What version of Windows can MicroSIP run on?

MicroSIP can be used on a computer running Windows 11 or Windows 10. Previous versions of the OS shouldn't be a problem with Windows 8 and Windows 7 having been tested. It comes in both 32-bit and 64-bit downloads.

Filed under:
  1. MicroSIP Download
  2. Free Modem and Telephony Software
  3. Open source and GPL software
  4. VoIP Software
MicroSIP has been picked by our editors as good software.
MicroSIP has been tested for viruses and malware.
We have tested MicroSIP 3.21.4 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.