The SanHui SHT-30A/Chbank Remote Seat Access Module hardware manual provides function description, installation steps, specifications, and troubleshooting.
The SHT-30A/Chbank Remote Seat Access Module converts digital trunk line voice and signalling into a format suitable for ordinary analog telephone lines, supporting up to 30 analog seat channels. It can work with various digital cards from SanHui and connects to major exchange brands via CAS or Clear‑Channel signalling.
The manual details hardware structure, RJ11 and RJ45 interface definitions, installation procedures, power requirements, and includes a full list of technical parameters and common fault troubleshooting to ensure reliable operation. This manual is written in Chinese.
| Dimensions | 438 × 230 × 42 mm (1U standard chassis) |
|---|---|
| Weight | ≈5 kg |
| Power supply | AC 220 V ±10 % 50 Hz |
| Input/Output interfaces | E1 line RJ45 (1), telephone RJ11 (30) |
| Frequency response | 300‑3400 Hz (±3 dB) |
| Signal‑to‑noise ratio | ≥80 dB |
| Feeding voltage | -40 V, max 28 mA per channel |
| User line length | ≤5.8 km |
| E1 line length | ≤2 km |
| Maximum power consumption | ≤15 W (DC only) |
| Signalling method | CAS (default) or Clear‑Channel |
| Lightning protection level | Level 4 |
The module supports 30 analog seat channels.
The default signalling method is CAS with link‑synchronization clock.
Use the mode switch according to Table 2‑1 to select the desired signalling or work mode.