High Reliability Communication System for Karnaphuli Tunnel

Elevating Connectivity: How OM8000 Transforming Bangladesh Tunnel for Reliable Communication

Project Background

The 9.3km-long Kanapuri River Tunnel in Bangladesh, including a shield tunnel section of 2,450m in length and 11.8m in diameter, was designed and constructed using Chinese specifications, with a design speed of 80km/h for a two-hole, four-lane tunnel, and a total project contract value of US$700 million.

On 26 November 2022, a ceremony was held to mark the completion of the southern tunnel of the Kanapuri River project in Monga, which was financed by the Export-Import Bank of China, contracted by China Communications Construction Company Limited and implemented by China Road and Bridge Engineering Company Limited.

The Kanapuri River Tunnel is the first tunnel in Bangladesh, which will greatly improve the traffic conditions in Chittagong and drive the economic development of Bangladesh, and will also help to improve the Asian Highway Network and promote the connectivity between Bangladesh and neighboring countries.It is important for the implementation of the "One Belt, One Road" initiative and the construction of the Bangladesh-China-India-Myanmar Economic Corridor.

Project Requirement

Based on the daily communication needs and actual situation in the tunnel, combined with the current technological development and system management requirements, New Rock provided the client with a unified communication management, which designed to efficiently integrate the functions of tunnel emergency phone, emergency broadcasting, office communication, multi-level unified management with high reliability.

The system requires common dispatching functions such as intercom, shouting, forcible demolition, forced insertion and listening. Multi-terminals are connected to the gateway equipment to enable the intercom broadcast system and external phones to communicate.

New Rock Solution
1.Install the New Rock OM8000 unified communication IP PBX in the tunnel monitoring center server room, which can support up to 8000 extensions and 800 concurrent calls.
2. Access to the local PSTN through the digital trunk gateway OM1000-TE.

3.Installation of multiple IP telephones in the tunnel control and management station, all of which transmit and communicate data through the network and are registered to the New Rock OM8000 IP PBX unified communications platform.

Customer Value
1.With the VoIP technology to abandon the traditional PABX and analog phones which require the laying of a large number of analog telephone lines with high labor cost and time consumption and reduce the risk system troubleshooting, increasing the speed of deployment of communication systems in tunnels and greatly reducing the cost of wiring in tunnels. The new VoIP system has high transmission speed and high stability, and also facilitates future system expansion and increment.
2. Set up an answering group for the duty officer, and when the duty officer is not in his seat, it supports the transfer of incoming calls to his mobile phone extension to ensure that emergent calls are not missed.
3. Support max 600 channel call recording and multi-level inquiry and management.
4. Open API interface, providing users with cost-effective access to later services.
5. Support unified management of equipment and remote access, reducing long-term system operation and maintenance costs.
6. High reliability guarantee, the OM8000 IP PBX deployed in the tunnel supports dual power supply and dual network port redundancy, and the OM1000-TE digital trunk gateway supports dual power supply and dual network port redundancy to avoid communication interruption caused by single point failure of network and power supply. The communication system adopts multiple disaster recovery methods to ensure high availability of communication in the tunnel.

7. The New Rock OM8000 IP PBX has fault alarm and display function, which greatly simplifies the workload of operation and management personnel, fully protects the lives and properties of the tunnel, and improve the efficiency of the daily system management.

Solution Highlight

Robust Communication Infrastructure

New Rock IP telephony solution provide the tunnel a robust and reliable communication infrastructure tailored to the project unique challenges of tunnel environments. This includes ensuring seamless coverage throughout the tunnel, even in areas with limited connectivity or potential signal interference.

Emergency Call Systems Integration

Integration with tunnel emergency call systems is crucial. New Rock IP telephony solution seamlessly connect with emergency call points and intercom systems, enabling individuals to quickly and easily communicate with emergency services and tunnel operators in case of an incident.

Redundancy and Failover

Given the critical nature of communication in tunnel environments, New Rock OM8000 IP telephony system has dual machine hot automated standby incorporate redundancy and failover mechanisms to ensure continuous operation, even in the event of network disruptions or single point hardware failures.

Support for Location Services

The ability to integrate with location-based services is essential for identifying the precise location of emergency calls within the tunnel. This feature aids emergency responders in locating and reaching the scene of an incident quickly and accurately.

Durability and Environmental Considerations

New Rock IP telephony solution designed to withstand the environmental conditions within the tunnel, including factors such as temperature variations, humidity, dust, and potential exposure to water or chemicals.

Interoperability with Existing Infrastructure

Compatibility with existing tunnel infrastructure, such as tunnel management systems, traffic control systems, and security systems, is important to ensure seamless integration and interoperability across different operational domains.

Mobile and Wireless Connectivity

Support for NewLync mobile extension for wireless connectivity is beneficial for tunnel staff and emergency responders who need to maintain communication while moving within the tunnel environment.

Scalability and Flexibility

New Rock IP telephony solution with license-controlled software is scalable to accommodate future expansion or modifications to the tunnel infrastructure. It is able to offer flexibility in adding or relocating communication endpoints as needed.

Security Features

New Rock OM8000 IP PBX and OM1000-TE digital trunk gateway has robust security measures, including encryption, authentication, and access control, can be integrated into the tunnel communication system to safeguard communication and protect against unauthorized access or tampering.

Centralized Management and Monitoring

New Rock unified management system for administering and monitoring the whole IP telephony system. it can improve tunnel communication maintenance, configuration, and troubleshooting tasks efficiency.


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