With this option set, the local and remote modems are configured for SDC operation. The modems default to Fast Call=Lvl3, and use LAPM error correction with modified V.42bis data compression. Enable Option Set 2 in both the local and remote modems, and ensure that Mode (AT*SM) is set the same in both modems.

The modem uses the adaptive rate feature in the V.34 Auto modulation mode. This ensures maximum throughput when line quality is poor.

Option Set 3—Sync Dial Only

Option Set 3 satisfies the needs of a synchronous dial application (see Table 4-2). With Option Set 3, the modem provides the network timing (Clock=Internal). Select a data rate at which the modem communicates with the DTE, using DTE Rate (AT*DE). Consult the description in Appendix A.

With this option set, the local and remote modems are configured for SDC operation. The modems default to Fast Call=Lvl3, and use LAPM error correction with a modified V.42bis data compression. Enable Option Set 3 in both the local and remote modems, and ensure that Mode (AT*SM) is set the same in both modems.

With Option Set 3, DTR=108.1 so that an off-to-on DTR transition instructs the modem to connect to the telephone line. If the modem detects an incoming call, the call is connected. If the modem does not detect an incoming call and Default Dial (AT*DA) is enabled, the modem dials the number specified. If Default Dial is disabled, the modem refers to the Modulation Mode option (AT*MM). If set to Answer, the modem goes off-hook and sends an answer-back tone. An on-to-off DTR transition disconnects the modem from the telephone line. If DTR is low, the modem does not auto-answer. DTR transitions govern how the modem answers and disconnects calls. All options in the ACU OPT’S category are set for a typical synchronous DTE.

The modem uses the adaptive rate feature in the V.34 Auto modulation mode. This ensures maximum throughput when line quality is poor.

Option Set 4—Sync Leased Line with Dial Restoral; No ACU (Models 3261/63/66/68)

Option Set 4 uses the modem’s leased line restoral feature. With this option set, the modem operates primarily on a leased line unless that line fails. If so, the modem automatically restores the connection over a single dial line.You must install a 326XFAST-SDC Modem at both ends of the leased line to implement restoral.

Option Set 4 configures the modem for a general restoral application (see Table 4-2). The modem uses the adaptive rate feature in the V.34 Auto modulation mode. This setting ensures maximum throughput when line quality deteriorates. If restoral criteria are met, the modem automatically reroutes data traffic through the public switched telephone network (PSTN) over a single dial line. At that time, the modem attempts to run at 28.8 kbps over the dial line, and falls back to lower speeds if required. After an hour, the modem returns to the leased line.

With Option Set 4, the modem provides the network timing (Clock=Internal). Select a data rate at which the modem communicates with the DTE, using DTE Rate (AT*DE). Refer to the description in Appendix A.

Configuring the Modem

Configuring the Modem 4-9

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Telenetics 326X V.34, V.34-SDC, V.32bis Series manual Option Set 3-Sync Dial Only
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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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