This document is the operation manual for the VST3300 Series All-In-One IP PBX, introducing the features and characteristics of the product.
The VST3300 Series is an all‑in‑one IP PBX that combines traditional PBX, IP‑PBX, SIP server and SIP client functions in a single device. It supports analog and SIP extensions, fax, and voice mail, offering high‑quality voice communication over an Internet connection.
This manual covers safety instructions, installation steps, detailed configuration of extensions, trunks, SIP devices, conference calls, firmware updates, and backup procedures. It also includes parameter tables for DNS settings, service ports, remote management, and VAD control, as well as troubleshooting guidance.
| Analog Channels (per model) | 3–4 |
|---|---|
| SIP Channels (default) | 8–12 |
| SIP Trunks (default) | 2 |
| Supported FXO/FXS ports | FXO +2FXS (VST3305), 4FXS, 4FXO, etc. |
| Remote Management Control (TCP) | Enabled (1) or Disabled (0) |
| VAD Control default | Enabled |
Enter the two‑digit extension number (11‑26) and the system will reset the password to the default blank value.
VAD control is enabled by default.
Do not insert fingers, pins, wires, or any metal objects into vents and gaps.