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GQ4030T
30-channel PCM multiplexing equipment
Keywords
Commercial Switches
Domestic Switches
隐藏域元素占位
Category:
Commercial Switches
Domestic Switches
Product Overview
The PCM multiplexing device is a point-to-point E1 transmission system developed on the basis of our company’s proprietary ultra-large-scale integrated circuits.
This product offers 30 telephone channels and boasts exceptional versatility. Its electrical components are fully digital, ensuring reliable and stable operation, low power consumption, high integration, compact size, and ease of installation and maintenance.
Product Features
1. Voice access for Route 30, supporting caller ID and reverse‑polarity billing.
2. Supports the mutual number‑porting feature across all sites.
3. The E1 interface complies with Recommendation G.703 and employs all-digital clock recovery and smooth phase-locking techniques.
4. The voice port supports both FXO and FXS interfaces: the FXO interface connects to a PBX, while the FXS interface connects to the user’s telephone.
5. It can detect whether the remote device has lost power or the E1 link is down when an E1 signal is lost, and indicate the alarm via an indicator light.
6. Multiple power supply options available: AC 220 V, DC –48 V/DC 24 V, with automatic polarity detection—no need to distinguish between positive and negative terminals during installation.
| Interface parameters | |
| E1 interface | Equipment interface: Compliant with Recommendation G.703 Bitrate: 2048 Kb/s ± 50 ppm Code Type: HDB3 Impedance: 75 Ω (unbalanced) or 120 Ω (balanced); the unbalanced connector is BNC, compatible with 75‑2/3 coaxial cable. Jitter Characteristics: Complies with Recommendations G.742 and G.823. Input port attenuation range: 0 to 6 dBm |
| FXS user interface | Ring voltage: 75V Ringing frequency: 25 Hz Secondary input impedance: 600 Ω (off-hook) Return loss: 20 dB |
| FXO trunk interface | Ring detection voltage: 35 V Ring detection frequency: 17 Hz–60 Hz Secondary input impedance: 600 Ω (off-hook) Return loss: 20 dB |
| Power Supply Characteristics | |
| Input voltage | AC 220 V or DC -48 V, DC +24 V |
| Full-load power consumption | <5W |
| Wiring method | AC 220V: National standard three-pin plug DC-48V, DC+24V: Power supply terminals |
| Overload protection | Support |
| Work environment | |
| Operating temperature | -10～60℃ |
| Storage temperature | -40～85℃ |
| Relative humidity | 5% to 95% (non-condensing) |
| Mechanical Properties | |
| Shell | Metal casing |
| Installation Method | 19-inch 1U rack-mountable |
| Size | 200 mm (depth) × 485 mm (width) × 45 mm (height) |
| Warranty | |
| Warranty period | Two years |
Device model | Business Interface | E1 port | Power supply |
GQ4030T | Route 30 phone number | 1 E1 port | Single power supply: AC 220 V or DC -48 V |
GQ4030T-2P | Route 30 phone number | 1 E1 port | Dual power supply (AC 220V + DC -48V) |
| When placing an order, please confirm whether a single power supply or a dual power supply is required. | |||
Application Diagram: E1 Point-to-Point Networking
Related Documents
Name
Size
Type
Release Date
Download
Technical Specification (16–30-Channel Rack-Mounted Telephone Optical Terminal)
357.4KB
2025-09-06
Beijing–Tianjin–Hebei, Henan, Shanxi, Inner Mongolia, and Sichuan:+8613719208595
Fujian, Guangxi, Hainan, Yunnan, Guizhou, and Jiangxi:+863760887412
Heilongjiang, Jilin, Liaoning, Inner Mongolia, Hunan, Chongqing:18126729399
Jiangsu, Zhejiang, Shanghai, Shandong, and Anhui:+8618198851696
Shaanxi, Gansu, Ningxia, Qinghai, Xinjiang, and Tibet:+8618198851697
Guangdong Region:+8613302232639 +8618903052902
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