Description
Your provider hands you a SIP trunk and a 200 MB softphone that autostarts, shows ads and wants an account before it will dial. MicroSIP sits at the other extreme: under 20 MB unzipped, and it places calls as soon as you fill in the SIP server and extension. The window is small enough to park in a screen corner and the call quality gives up nothing.
Built on PJSIP, open source, free, Windows-only, and still maintained after more than a decade. Connecting it to FreePBX, Asterisk, 3CX or a carrier SIP trunk is a matter of filling in a few fields, and several accounts can stay registered at once.
Phone, Logs, Contacts: the entire interface is three tabs — dial pad, call history, address book — with right-click menus to start a voice call, a video call or a message.
Multiple accounts: register several SIP lines simultaneously and pick the active one from the dropdown, so a support line and a personal number live in one client without interfering.
Wideband codecs: Opus, G.722, G.711, G.729 and GSM are all included and orderable in settings — fall back to narrowband on a poor link, run Opus at 24 kHz when bandwidth allows.
Call recording: point it at a folder and calls are saved as MP3 or WAV, covering support QA and conference records without another tool.
Video calling: H.264, H.263 and VP8, with camera and bitrate selectable.
Portable: the zip build keeps its configuration in its own folder, so a USB stick carries it to another machine intact. A Lite build strips the video components for an even smaller footprint.
Built on PJSIP, open source, free, Windows-only, and still maintained after more than a decade. Connecting it to FreePBX, Asterisk, 3CX or a carrier SIP trunk is a matter of filling in a few fields, and several accounts can stay registered at once.
Features
Phone, Logs, Contacts: the entire interface is three tabs — dial pad, call history, address book — with right-click menus to start a voice call, a video call or a message.
Multiple accounts: register several SIP lines simultaneously and pick the active one from the dropdown, so a support line and a personal number live in one client without interfering.
Wideband codecs: Opus, G.722, G.711, G.729 and GSM are all included and orderable in settings — fall back to narrowband on a poor link, run Opus at 24 kHz when bandwidth allows.
Call recording: point it at a folder and calls are saved as MP3 or WAV, covering support QA and conference records without another tool.
Video calling: H.264, H.263 and VP8, with camera and bitrate selectable.
Portable: the zip build keeps its configuration in its own folder, so a USB stick carries it to another machine intact. A Lite build strips the video components for an even smaller footprint.
