Operation

DMD15/DMD15L IBS/IDR Satellite Modem

 

 

 

 

 

 

 

 

 

 

 

 

Figure 3-3. Universal Interface Modules (UIM) Functional Block Diagram

3.3 Synchronous Interface

Synchronous Tx Data and Clock enters the UIM and is routed to either the RS-422, RS-232, or V.35 Receiver as the selected M&C Processor. The signals are then converted to an RS-422 balanced format and sent to the Baseband (BB) Processor Card. Receive Data from the BB Processor Card undergoes the reverse process where it is converted from RS-422 Balanced format and routed to the RS-422 or V.35 Drivers.

3.4 G.703 Interface

Either Balanced or Unbalanced G.703 Data is routed from the ‘Send Data In’ Connections to the G.703 Receiver. The G.703 Receiver recovers a clock from the data stream, converts the clock and data to an RS-422 balanced format, and routes the clock and data to the BB Processor. The reverse process is performed on the Receive Data Stream where the G.703 Data exits the modem at the ‘Receive Data Out’ Connection. The G.703 Interface is designed to operate at the following data rates:

T1 (1.544 Mbps)

E1 (2.048 Mbps)

T2 (6.312 Mbps)

E2 (8.448 Mbps)

Additionally, the line code is selected when the interface type is selected with the exception that T1 may use B8ZS or AMI as selected at the Front Panel.

The G.703 Interface also contains two additional ports that can operate at T1 or E1 that provides a four port D&I Interface. The ‘Drop Data Out’ Port provides an unaltered Send Data Output that can be used for daisy chaining additional systems. On the receive side, a T1 or E1 Data Stream

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TM051 – Rev. 5.8

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Paradyne DMD15L operation manual Synchronous Interface, G.703 Interface
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DMD15, DMD15L specifications

The Paradyne DMD15L and DMD15 are advanced digital modems designed to enhance communication in a variety of networking environments. As part of Paradyne's robust portfolio of networking solutions, these devices are engineered to deliver reliable and efficient data transmission over both copper and fiber optic connections.

One of the main features of the DMD15L and DMD15 is their capability to support Multiple Protocol Data Units (MPDUs), which enables them to handle a diverse range of network protocols seamlessly. This flexibility makes them suitable for different applications, from industrial automation to telecommunications.

These modems utilize advanced modulation techniques, such as Quadrature Amplitude Modulation (QAM), to maximize data throughput while maintaining signal integrity. This ensures that users benefit from high-speed connections, even in challenging signal environments. Furthermore, the DMD15 series incorporates Error Correction Codes (ECC) that enhance data reliability, effectively reducing packet loss and ensuring data coherence during transmission.

The DMD15L is particularly notable for its long-range capabilities, making it a go-to solution for users requiring extended distances without compromising data quality. It features built-in Adaptive Equalization, which automatically adjusts signal levels to optimize performance over varying transmission distances. This technology is crucial in maintaining consistent high-speed connectivity, especially in environments with variable conditions.

Both models are equipped with user-friendly interfaces that facilitate configuration and management. They support SNMP (Simple Network Management Protocol) for real-time network monitoring, allowing administrators to track performance metrics and identify potential issues before they impact users. The devices also include LED indicators for quick status checks, ensuring that users have immediate visibility of operational conditions.

In terms of physical characteristics, the DMD15 and DMD15L are designed for durability and ease of installation. They come in a compact form factor, making them suitable for deployment in constrained spaces. Additionally, their robust casing is built to withstand harsh environmental conditions, making them suitable for both indoor and outdoor installations.

Overall, the Paradyne DMD15L and DMD15 are high-performance modems that combine versatile technologies, reliability, and user-friendly features. They are excellent choices for organizations looking to enhance their communication capabilities and ensure robust data transmission across diverse networks. With their advanced functionalities and adaptability, these modems stand out as key components in modern network infrastructure.
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