This document is the user manual for Synway CDC series voice cards, which explains the installation and usage methods of this series of products.
The Synway CDC series voice cards are PCI‑bus multi‑channel voice codec cards designed for use with the Asterisk open‑source PBX platform. They support G.711 A‑Law, μ‑Law and G.729A codecs and provide hardware‑accelerated voice processing to reduce CPU load.
The manual guides qualified service personnel through hardware installation, software driver installation (including required Zaptel and Asterisk versions), driver loading and removal, and lists the cards' technical specifications and support contacts. This manual is written in Chinese.
| Dimensions | 120 × 95 mm (without mounting plate) |
|---|---|
| Weight | ≈100 g |
| Operating Temperature | 0 °C – 55 °C |
| Storage Temperature | -20 °C – 85 °C |
| Power Consumption | ≤ 8 W |
| Audio Decode Formats | G.729A, A‑Law, μ‑Law |
| Audio Encode Formats | A‑Law, μ‑Law, G.729A |
| Audio Bitrates | A‑Law 64 kbps, μ‑Law 64 kbps, G.729A 8 kbps |
Supported Linux versions include Red Hat 7.2, Red Hat 9.0, AS4, FC4, and SUSE 10.
The cards consume no more than 8 W of power.
Each card measures 120 mm × 95 mm (excluding the mounting plate).