This document introduces the features and characteristics of the SHT-8C/PCI/EC analog voice card from Sanhui CTI, including support for 8 voice channels, external ring detection, agent pick/hang detection, etc.
The SHT-8C/PCI/EC is an 8‑channel PCI‑bus analog voice card designed for telephony applications. It supports 64 ms echo cancellation, multiple codec formats, and flexible module configurations such as external line, seat, and combined modules.
The manual provides a detailed overview of the card’s architecture, system requirements, step‑by‑step installation instructions, and a full list of technical specifications, including dimensions, power consumption, and environmental limits. This manual is written in Chinese.
| Dimensions | 170 mm × 115 mm (excluding mounting brackets) |
|---|---|
| Weight | ≈250 g |
| Operating Temperature | 0 °C – 55 °C |
| Storage Temperature | -20 °C – 85 °C |
| Number of Voice Channels | 8 channels (4 dual‑channel modules) |
| Echo Cancellation | 64 ms per channel |
| PCI Bus Compatibility | PCI 2.1, burst transfer up to 132 MB/s |
| Power Consumption | ≤12 W (PC power supply) |
| Power Supply Requirements | +5 V DC 600 mA, -12 V DC 80 mA, +12 V DC 300 mA |
The card supports up to 8 voice channels by installing four dual‑channel modules.
The maximum power consumption is 12 W, drawn from the PC power supply.
Each channel provides 64 ms of echo cancellation.