This document is a technical specification for the ACOM204/8N V3.0 VOIP voice gateway released by Shenzhen Yizheng Technology Co., Ltd. The product is an important device in the IP telephone network, with functions such as voice compression and IP packaging. The product supports H323 and SIP protocols, and has FXS and FXO interfaces. It supports audio coding standards such as G.711, G.723.1, and G.729. In addition, the product also has web-based configuration capabilities and supports NAT and DDNS services.
The ACOM204/8N is a VOIP gateway designed by Yizheng Technology. It supports SIP, H.323 and SP protocols and includes features such as automatic dialing plans, fax over IP, and remote management via web, telnet, console, or IVR. The device can be configured with 4 or 8 telephone ports (FXS/FXO) and provides basic PBX functions, NAT traversal, and security features.
Hardware includes two 10/100M Ethernet ports, a 166 MHz CPU, and LED indicators for power and network status. The unit is housed in a silver metal case with dimensions 285 × 35 × 150 mm, operates on a 12 V DC supply with power consumption under 10 W, and works in temperatures from 0 °C to 40 °C with 10‑90 % non‑condensing humidity. Supported voice codecs are G711, G729A, and G.723.1. This manual is written in Chinese.
| Ethernet ports | Two 10/100M ports |
|---|---|
| CPU frequency | 166 MHz |
| Power consumption | <10 W, 12 V/1 A |
| Dimensions | 285 × 35 × 150 mm |
| Operating temperature | 0 °C – 40 °C |
| Humidity range | 10 % – 90 % non‑condensing |
| Supported protocols | SIP, H.323, SP |
It has two 10/100M Ethernet ports.
It operates on a 12 V DC supply with power consumption under 10 W (approximately 1 A).
The unit measures 285 mm × 35 mm × 150 mm.