Alcatel-Lucent MDEE DPB11 Part 109773580 – Digital Processing Board

The Alcatel-Lucent MDEE DPB11 Digital Processing Board, identified by part number 109773580, is a high-density digital signal processing (DSP) module designed for Alcatel-Lucent's media gateway and switching platforms. It performs essential media processing tasks, including voice transcoding, echo cancellation, conference bridging, and DTMF detection, enabling efficient handling of large call volumes in carrier and enterprise networks.

Board Architecture

The DPB11 is a mezzanine card that connects to the host system through a high-speed serial interface. It incorporates multiple DSP chips from leading vendors, providing up to 128 simultaneous voice channels per board. The board's architecture supports both G.711 and compression codecs such as G.729, G.723, and AMR, allowing operators to optimize bandwidth usage without sacrificing voice quality.

Part number 109773580 indicates a specific variant with extended temperature range and enhanced memory, suitable for outdoor or harsh environment enclosures. The board includes onboard flash storage for firmware and configuration data, enabling standalone operation and fast boot times.

Technical Specifications

• Product Name: MDEE DPB11

• Part Number: 109773580

• DSP Processing Capacity: 128 channels (G.711) or 64 channels (G.729)

• Supported Codecs: G.711, G.729, G.723.1, G.726, AMR, AMR-WB

• Echo Cancellation: G.168 compliant, up to 128 ms tail length

• Voice Features: VAD, CNG, programmable gain, tone generation

• Interface: PCIe / serial bus (vendor proprietary)

• Power Consumption: 25 W typical

• Operating Temperature: -40°C to +70°C (industrial variant)

Key Capabilities

• High-density voice and fax processing

• Conference bridging with up to 64 participants per session

• DTMF and MF detection/generation

• Dynamic resource allocation across channels

• In-service firmware upgrades without resetting

Integration and Use Cases

The DPB11 is typically deployed in Alcatel-Lucent's MDEE (Media Distribution and Edge Equipment) chassis, where it acts as the primary media processing resource. It is commonly used in voice over IP gateways, session border controllers, and IP multimedia subsystem (IMS) nodes. The board's high density makes it cost-effective for large-scale trunking applications, while its low latency ensures real-time conversational quality.

In mobile core networks, the DPB11 handles transcoding between AMR and G.711 to bridge cellular and fixed-line calls, supporting seamless interworking. The board also plays a key role in call center platforms, providing advanced conferencing and recording capabilities.

Management and Maintenance

Management is performed through the host system's OAM framework, which monitors DSP usage, error counters, and thermal status. The board supports remote diagnostics and loopback tests. If a DSP failure occurs, the system automatically redistributes channels to healthy DSPs, ensuring service continuity. The firmware can be upgraded via TFTP or FTP with minimal impact.

Conclusion

Alcatel-Lucent MDEE DPB11 Part 109773580 is a robust, high-capacity digital processing board that underpins media-intensive communication services. Its versatility, performance, and reliability make it a critical component in modern voice and multimedia networks.