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Intelligent digital dispatch system with 1,792 extensions, 32 E1 interfaces, 1+1 redundant backup, 128-party conference, 30,000-hour recording, and multi-system fusion linkage.
The Digital Program Control Dispatch System is an intelligent multi-layer frame-type dispatch exchange characterized by ease of use, high reliability, and large capacity. Widely deployed across coal mines, power utilities, chemical plants, government agencies, hospitals, hotels, and schools, it supports 1,792 loop extensions/trunk lines and employs modular design with mixed extension/trunk insertion modes.
Reliable dispatch communication is the lifeline of industrial operations — the channel through which production commands flow, emergencies are coordinated, and daily operations are managed. The Digital Program Control Dispatch System is engineered as the central nervous system of this communication infrastructure, combining the reliability of traditional TDM architecture with the flexibility of IP extensions in a fully hybrid, fusion architecture.
The system's capacity is substantial: 32 E1 interfaces and 1,792 extension/trunk channels with mixed insertion, scaling from 16 extensions up to the full 1,792 through modular expansion. This scalability allows the system to grow with the organization, protecting the initial investment while accommodating future expansion. The MCU board and DC power supply both employ 1+1 redundant dual-backup configurations, with switchover during conversation causing no interruption — a critical reliability feature for dispatch systems where communication continuity is paramount.
The system's broadcast capabilities are powerful and versatile: one-key broadcast, scheduled directional broadcast, and multi-zone concurrent broadcast are all supported. The conference function accommodates 128 parties with 64+ in full-duplex conversation, supporting up to 4 simultaneous conference groups — ideal for coordinating multi-team operations across different mine zones. A built-in full-channel recording system provides at least 30,000 hours of recording capacity, ensuring that all dispatch communications are preserved for compliance, training, and post-incident analysis.
Multi-system fusion linkage is a key differentiator. The system integrates with gas alarm systems, personnel positioning, and video surveillance for coordinated safety response. The vehicle-mounted wireless intercom interconnection function extends dispatch communication to mobile equipment operators. A three-level lightning protection design ensures system survivability during electrical storms — a common threat in surface installations. The system uses digital time-division A-law 2.048 Mb/s PCM technology with a 2048×2048 non-blocking single-T switching network. Performance metrics include crosstalk attenuation >70 dB (1100 Hz), call loss rate <1% for internal calls and <0.5% for outgoing calls, subscriber feed current ≥18 mA, and loop resistance >1200 Ω. The system operates at 0–40 °C with 0–90% non-condensing humidity and draws an average of <2.5 A per 100 lines.
| Parameter | Value |
|---|---|
| Digital Format | Digital time-division A-law 2.048 Mb/s PCM |
| Switching Network | 2048×2048 non-blocking single-T |
| Max Capacity | 1,792 extensions/trunks |
| E1 Interfaces | Up to 32 |
| Conference | 128 parties, 64 full-duplex, up to 4 simultaneous groups |
| Recording Capacity | ≥30,000 hours |
| Power Supply | AC 220 V±10% 50/60 Hz; DC −48 V |
| Power Consumption | <2.5 A per 100 lines |
| Crosstalk Attenuation | >70 dB (1100 Hz) |
| Call Loss Rate | Internal <1%, outgoing <0.5% |
| Feed Current | ≥18 mA |
| Loop Resistance | >1200 Ω |
| Operating Temperature | 0 °C – 40 °C |
| Operating Humidity | 0%–90% non-condensing |
Dispatch communication and command for coal mines, power utilities, chemical plants, government agencies, hospitals, hotels, schools, and other enterprises and institutions.
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The company is a provider of complete solutions for mine rail transportation dispatching systems and intelligent mine signal control and safety dispatching.
