There was a download of SIP PBX v2 2.69 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. SIP PBX v2 is included in Communication Tools. The actual developer of the free program is PC Best Networks. Commonly, this program's installer has the following filename: GTSIPPBX.exe. The most popular versions of the software 2.6 and 1.0.
From the developer:
A Free Windows SIP PBX, with rich and powerful features like ACD(Automatic Call Distribution), Ring Group, Call Parking, Auto Attendant, Pickup Group, Conference, Auto-Dialer, Database CDR report, Database PBX Status Report, and much more. You can set up your own call-center in just a few of minutes. Support Plugin now. Customize your IVR menu by C# or vb.NET. V3 is completely database driven. V2 can run without database.
You may want to check out more software, such as VaxVoIP SIP Server SDK, Advanced PBX Data Logger or WillVoice PBX MANAGER, which might be related to SIP PBX v2.
Texting & Video calls
Device Assistants