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Datacom, always at the forefront of technological innovation, continues to expand its horizons and overcome new challenges. With consolidated experience in data transmission solutions for operators and providers, the company recently diversified its activities with the development of OCP servers, meeting the emerging needs of the data center market. Now, marking another significant advancement, Datacom is pleased to announce the addition of DWDM technology products to its portfolio, reinforcing its commitment to continuous innovation and excellence in telecommunications solutions.
The DM4920 emerges as Datacom's answer to the current demands of the DWDM market, bringing a solution that combines compression and efficiency for high-capacity optical networks.

"Over the years, Datacom has been intensely dedicated to DWDM technology, employing color transceivers and advanced Coherent technology in various applications, as well as passive multiplexer modules," highlights Gustavo Spellmeier, Product Director at Datacom. "This accumulated experience has led us to the development of the MUXPONDER DWDM DM4920 chassis, a significant step that reflects our commitment to innovation and the ability to meet growing market demands. The DM4920 symbolizes an important advancement in our product line, marking a new era in high-capacity, integrated telecommunications solutions.”

What is the DM4920?

The first model in the DM4900 Line, the DM4920 stands out for integrating the essential MULTIPLEXER, TRANSPONDER and DWDM functionalities into a single system. This combination results in a versatile solution capable of meeting a wide range of networking requirements. It presents itself as the ideal choice for providers and operators looking to optimize their network infrastructures, offering an efficient alternative in terms of both cost and space.

Multiplexer:
Responsible for multiplexing 100GbE client interfaces into a single line interface, maximizing data transmission efficiency.

Transponder:
Converts electrical signals into "color" optical signals, tuned to a specific C-Band DWDM channel, using Coherent optical modulation technology for greater capacity and accuracy.

DWDM:
It incorporates advanced features related to DWDM technology in the optical domain, including the use of C-band channels, EDFA optical amplification, and a DWDM optical multiplexer to optimize data transmission over long distances.

Applications:

Datacom's DM4900 was designed with a specific focus on two key applications in the DWDM market, offering versatile and efficient solutions for different networking needs. The first application, Lambda Alien, is ideal when the DM4900 is integrated into an existing network to expand the capacity of the already established optical layer, offering a cost-effective alternative to adding a transponder to existing third-party platforms.

The second application focuses on Optical Cover solutions, where the DM4900 stands out in the configuration of optical systems in dark fibers, that is, in creating an optical application from scratch, ranging from simple configurations without amplification to more complex solutions that require amplification and other advanced features. Below are some examples:

Single channel application, without multiplexer, with optical amplification only

Application with maximum capacity, with multiplexer and optical amplification

intermediate site as signal regenerator:

General product features:

With a compact 2U rack-style design, the DM4920 is an efficient and powerful solution for modern networks. The Product stands out for:

High Transmission Capacity:

The DM4920 offers impressive transmission capacity of up to 1.6 Tbps. This is possible thanks to its 16 100GE QSFP-28 client interfaces, which are aggregated into 4 tunable 400Gbps DWDM Coherent line interfaces, maximizing efficiency and performance.

EDFA Amplification and Integrated Mux/Demux:

Equipped with 2 slots for booster amplifiers and EDFA preamplifiers, the DM4920 allows the implementation of a robust DWDM optical layer with 400Gbps lambdas. Furthermore, it offers the option of integrating an 8-channel multiplexer, essential for long-distance transmissions and optical regeneration.

Advanced Remote Management:

With SFP interfaces for FE modules, the DM4920 facilitates inband management of remote elements, enabling centralized and efficient network administration.

High Availability Hardware:

The DM4920's design focuses on reliability, with removable and redundant power supplies, compatible with full range AC and 48V DC. Its redundant and removable ventilation system ensures continuous and efficient operation in a variety of conditions.

Hardware Details:

Front Part of the Equipment:

Local Management Interfaces:

Includes alarm, console and out-band Ethernet management ports, allowing efficient control and monitoring of the system.

OSC (Optical Supervisory Channel) interfaces:

Designed to accommodate two SFP Fast Ethernet modules, these interfaces facilitate the transmission of management data through the optical layer, enabling inband management of the system.

Main Slots:

Consisting of 4 slots, divided between service slots (lower) and auxiliary slots (upper).

The service slots are intended for interface cards, such as the LC800, which supports 8 100GE QSFP28 client interfaces and 2 400Gbps DWDM OpenZR+ line interfaces.

The auxiliary slots are used to implement optical layers, supporting EDFA amplification cards and multiplexer cards with 8-channel Mux/Demux.

Service Slots:

Designed to accommodate the DM4900 - LC800 service cards, essential for the main functionality of the equipment.

Rear Part of the Equipment:

Ventilation system:

Equipped with 3 ventilation slots, all with hot swap support. This system is crucial to maintaining efficient operation and preventing internal components from overheating.

Power System:

Includes 2 hot-swap slots for redundant power supplies. These sources are compatible with AC Full Range or DC -48Vdc and can be configured in AC/AC, DC/DC or AC/DC hybrid modes, ensuring continuity and reliability of the equipment's electrical supply.

Line Interfaces:

DM4900 LC-800

The LC-800 interface board is a vital component in the DM4920 system, equipped with two OpenZR+ 400Gbps line interfaces using QSFP56DD connectors. Additionally, it offers eight 100GbE QSFP28 client interfaces, with half of them mapped to each line interface, providing an efficient and versatile connection for a variety of networking needs.

Compatible with a wide range of 100GbE optical modules and QSFP28 DAC/AOC cables, the LC-800 is designed for flexibility and high performance. The card also incorporates advanced error correction technologies, including FEC - Forward Error Correction (cl 91) on the client interfaces and oFEC on the line interfaces, ensuring highly reliable data transmission with minimal errors.

Available in two transponder models - Standard and High Power (scheduled to launch in Q1/2024) - the LC-800 adapts to different network requirements, with the High Power model offering extended range and greater flexibility in transmission rates. The LC-800's 100G ports are designed for use with Datacom transceiver modules, ensuring compatibility and efficient operation.

Service Modules:

DM4900 LC-OAC20 / LC2xOAC20

Available in two models, OAC (Optical Amplifier Combo) modules contain onboard EDFA amplifiers, with options for one or two amplifiers per module.
These modules allow software configurations for different application profiles, such as Booster, Pre-Amp or Regenerator (line), and include an input for the OSC management channel.
Support optical signal monitoring with MON interface, operating in all amplification functions.

D8CH33 – 8-Channel DWDM Optical Multiplexer:

The D8CH33 module is an 8-channel passive multiplexer for DWDM optical signals, compatible with the DM4900 platform.
It operates on channels CH33 to CH40 and supports an EXP channel for carrying the OSC management signal.
This module is an adapted version of an existing product, compatible with the DM4920 chassis.

Main features:
Datacom's DM4920, based on the DmOS operating system, not only offers a series of advanced functionalities for DWDM networks, but also ensures the reliability and high standard characteristic of Datacom's GPON switches and OLTs. This robust operating system ensures that the DM4920 operates with the same efficiency and reliability, setting a high standard for performance and security.

Among notable features, the DM4920 includes outband management per GbE port for effective control, and FEC (Forward Error Correction) on 100GbE interfaces for reliable data transmissions. Additionally, it provides detailed information about the Optical Signal-to-Noise Ratio (OSNR) of the transponders. The equipment is also equipped with the High Power Transponder for Lambda Alien applications, offering greater range and flexibility, and supports operation in Multi-Rate mode (100G, 200G and 300G). The LC-800's Hot Swap functionality allows for seamless replacements or upgrades, and support for link quality metrics such as BER and Q factor reinforces system reliability.

Important: Some features are currently in the development phase (roadmap). For detailed availability information, please contact your regional account manager.

Final considerations:

At Datacom, our commitment goes beyond providing innovative products like the DM4920. We are dedicated to ensuring that each client receives comprehensive, expert support for their projects. We understand the importance of a detailed technical understanding in each commercial proposal, which is why each proposal includes a thorough technical analysis, ensuring that customers have a complete understanding of the application and use of the product.

Our pre-sales team, supported by the Products and R&D teams, is ready to prepare personalized technical proposals, ensuring solutions that meet the specific needs of each project. This specialized technical support is a fundamental pillar of our service, ensuring that each proposed solution is aligned with the latest innovations in the field of DWDM networks.

In addition, Datacom offers in-person training and a distance learning platform, DATACOM EAD, to train professionals in various topologies and application scenarios. We invite everyone to subscribe to our YouTube channel for constant updates and share our content on social media, promoting knowledge and innovation.

For any clarifications, questions or requests for proposals related to the DM4920 or other products, our sales team is always available to help you choose the solution best suited to your needs, reinforcing our commitment to excellence and customer support.