326XFAST-SDC Modem Application Examples

This section provides application examples for each SDC option set, and notes options you may need to change from factory default settings for each option set. This section includes the following:

•SDC Pre-OperationNotes—read this before configuring the modem

•Configuring The Modem for SDC Operation—configuration options that are critical to ensure optimum network performance on an SDC connection

•SDC Sample Applications—examples of common SDC applications

SDC Pre-Operation Notes

This section contains important information for using the 326XFAST-SDC Modem in SDC operating mode. Read this section before configuring the unit.

Operational Requirements

•326XFAST-SDC modems require framed HDLC/SDLC-like data. NOTE: BER tests do not operate in an SDC environment because the data is not framed.

•326XFAST-SDC modems support an NRZ or NRZI data encoding method. Refer to the DTE documentation for information on the data encoding method

the DTE supports. (Refer to Appendix A, Data Form [AT*DF] option, for details on NRZ/NRZI data encoding methods.)

Optimizing Network Performance

The 326XFAST-SDC modem provides front panel displays of RX/TX Throughput and Link Utilization. Higher values indicate more efficient utilization; lower values indicate less efficient usage. These values are affected by the attached DTE and protocol characteristics—frame size, window size, and DTE rate selected.

(Refer to Chapter 1 of the326X Series Modem Reference Guide for a description of how to use the RX/TX Throughput and Link Utilization displays.)

Telenetics recommends the following to maximize efficiency:

•If your application is operating in a windowed protocol environment, set the window sizes to greater than 1 to improve performance. Recall that windowing refers to the number of packets sent before an acknowledgment is required.

•To improve network performance, adjust frame sizes. The optimum frame size for most applications is between 128 and 1024 bytes. Experiment with window and frame sizes for maximum performance.

•If link utilization is low, raise the DTE rate. Low link utilization typically implies that the DTE equipment is the bottleneck in data transmission.

Configuring the Modem

Configuring the Modem 4-21

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Telenetics 326X V.34, V.34-SDC 326XFAST-SDC Modem Application Examples, SDC Pre-Operation Notes, Operational Requirements
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326X V.34, V.32bis Series, V.34-SDC specifications

Telenetics has been a key player in the field of telecommunications, offering advanced modem solutions that cater to diverse communication needs. Among their notable products are the V.34-SDC and V.32bis series, including the 326X V.34 modem. These modems have been designed to enhance data transmission reliability and speed in various applications.

The Telenetics V.34-SDC modem represents a significant leap in technology, supporting data rates of up to 28.8 Kbps. This modem utilizes the advanced V.34 modulation scheme, which optimizes the use of existing telephone lines to deliver impressive performance, especially for users requiring high-speed data transmission. The V.34-SDC model also features robust error correction and data compression techniques, ensuring that users receive accurate data even over less than ideal connections. With its extended line-conditioning capabilities, the V.34-SDC modem can efficiently handle long distances and poor line conditions.

Equally noteworthy is the V.32bis series, which provides backward compatibility with V.32 modems, enabling seamless integration into existing systems. Capable of speeds up to 14.4 Kbps, the V.32bis modems are ideal for businesses and environments where legacy systems remain in use. It features adaptive equalization and advanced echo cancellation, ensuring a clear signal is maintained throughout the data transmission process. This versatility allows users to connect with various devices across different infrastructures.

The 326X V.34 modem further exemplifies Telenetics' commitment to high performance. It combines the V.34 capabilities with enhanced security features, offering users encryption options for sensitive data. This is particularly crucial for businesses that need to safeguard their information against potential vulnerabilities during transmission. The 326X also supports various data communication protocols, making it adaptable for multiple platforms and applications.

In summary, Telenetics’ V.34-SDC, V.32bis series, and 326X V.34 modems stand out for their high-speed data transmission, compatibility, advanced error correction, and security features. These technologies make them excellent choices for both enterprise and networking applications where reliable communication is vital. Telenetics continues to innovate, delivering modem solutions that meet the evolving demands of the telecommunications landscape.
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