This document is a hardware manual for the Sanhui CTI series SHT-8C/PCI/FAX voice card, which describes the functional description, performance characteristics, and installation steps of the voice card.
The SHT-8C/PCI/FAX is an 8‑channel analog fax/voice PCI card that supports a variety of telephony functions such as external line ringing detection, seat pickup/hang‑up detection, Caller ID, DTMF/FSK signaling, recording, and echo cancellation. The card can be configured with up to four dual‑channel modules and includes RJ11 ports, audio output, and a built‑in lightning‑protection circuit.
The manual contains a detailed overview of the card’s features, block diagrams, module descriptions, system requirements, step‑by‑step installation instructions, and a full list of technical specifications. It also provides contact information for technical support and sales. This manual is written in Chinese.
| Dimensions | 170 × 115 mm (without mounting plate) |
|---|---|
| Weight | ≈250 g |
| Operating Temperature | 0 °C – 55 °C |
| Storage Temperature | -20 °C – 85 °C |
| Audio Jack | 1 × 3.5 mm stereo |
| RJ11 Ports | 4 × 4‑wire RJ11 |
| Audio Output Power | ≥ 50 mW (headphone drive) |
| Maximum Power Consumption | ≤ 12 W (PC supply) |
| Supported Audio Codecs | A‑Law/µ‑Law 64 kbps, IMA‑ADPCM 32 kbps, PCM 16‑bit 128 kbps, MP3, VOX |
| System Capacity | Up to 10 cards per system, 8 channels per card |
The card provides 8 analog voice channels.
The card has four RJ11 ports, each using a 4‑wire connector.
The card consumes no more than 12 W from the PC power supply.