Sino-Telecom’s DCI solution has recently achieved continuous breakthroughs in the China Unicom market. In 2025, the tender-winning projects covered Jilin, Anhui, Xinjiang, Hebei, Neimenggu, Shenyang, Ningxia and other regions. In 2026, the winning footprint further expanded to Xiamen, Yunnan and Jiangsu,with Sino-Telecom securing the No. 1 ranking in every winning bid.
A series of consecutive project wins represents more than just a growing number of successful bids. They are a strong recognition of Sino-Telecom’s product strength, technology roadmap and delivery capability.
With the rapid growth of AI, cloud computing services, demand for high-bandwidth, low-latency data center interconnection continues to rise.
DCI, or Data Center Interconnect, acts as a “high-speed highway” between data centers, enabling faster and more stable data transmission across cities, campuses and cloud resource pools.
DCI-BOX is one of the key all-optical transport solutions for DCI scenarios.
Sino-Telecom has long focused on open optical networking technologies, with its solutions widely used in carrier metro networks, data center interconnection and AIDC networking.
What is DCI-BOX, and why is it gaining momentum?
Traditional WDM systems are typically large and relatively closed in architecture, requiring more space and making expansion and multi-vendor interoperability more complex.
DCI-BOX, by contrast, offers a more compact and flexible approach, with scalable capacity and simplified deployment and O&M.
Sino-Telecom’s DCI-BOX is designed to address these evolving network requirements:
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Open and decoupled architecture for flexible networking Supports open architecture and standardized management interfaces, enabling easier integration with third-party network management systems while reducing deployment and O&M complexity.
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Compact deployment with improved space efficiency Its modular box-type design is ideal for space-constrained scenarios such as data centers, metro nodes and enterprise equipment rooms, enabling more efficient deployment.
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High-capacity transport for 400G/800G evolution Designed for AI, cloud and high-bandwidth service growth, it supports higher-capacity all-optical transmission and continues evolving toward 200G/400G/800G stackable WDM applications.
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Simplified O&M and faster service rollout With simplified deployment and unified management, Modular WDM enables faster service provisioning, capacity expansion and fault localization in DCI and metro interconnection scenarios.
Where can Sino-Telecom’s DCI-BOX be applied?
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DC interconnection: Suitable for interconnection within DC clusters, between DCs in metro areas, and for short-distance interconnection between DCs across regions.
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DC-to-metro network interconnection: Supports high-speed connectivity between DCs and metro CRs, as well as egress routers.
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Backbone transport network extension: Extends backbone transport capabilities to large-scale DC nodes in metro areas.
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Intelligent metro network interconnection: Applicable to MER-to-MCR, MCR-to-MCR, and MCR-to-IPA/IPB interconnection scenarios.
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Multi-service transport: Supports interconnection from BRAS/SR to metro CRs, EPC/UPF nodes to metro CRs, between metro CRs, and from CDN nodes to metro CRs.
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Other high-capacity metro services: Meets the requirements of high-capacity, short-distance service transport within metro networks.
DCI-BOX is becoming a key technology for AIDC and cloud-driven digital infrastructure upgrades, enabling more open, compact and efficient all-optical interconnection.
In addition, Sino-Telecom’s DCI-BOX products have been deployed at scale across China Telecom, leading cloud service providers, and overseas markets. To date, cumulative shipments of its core components have reached 100,000 units. In the AI era, Sino-Telecom will continue to increase its investment in AIDC interconnection, satellite interconnection, and other emerging fields, delivering next-generation intelligent interconnection solutions for customers.
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