6-26PRO/100 LAN+Modem PC Card User’s Guide

S-Registers because doing so could result in the modem behaving unpre- dictably.

To display the value of an S-Register, type ATSn? where n is the number of the S-Register, then press Enter.

To modify the value of an S-Register, type ATSn=r where n is the S- Register number and r is the new value or setting, then press Enter.

S-Register Reference

S0 Ring to Answer After

The contents of register S0 sets the number of rings required before the modem goes off-hook to answer an incoming call (auto answer). The value can range from 0 to 255. ATS0=0 disables the auto- answer function. The default is 0.

S1 Ring Counter

This register is read only. The value of S1 increments with each ring. If no rings occur over a six-second interval, the register is cleared. The value of S1 can range from 0 to 255. The default is 0. Limits are country specific.

S2 AT Escape Character

Register S2 defines the ASCII character used in the Escape se- quence. This command is used to return to command mode without losing the connection with a remote modem. Default is S2=43, which is the “+” character. Thus the default Escape sequence is

+++. ASCII values 127 and below can be used. To disable this Escape sequence, set S2 equal to a value greater than 127.

S3 Command Line Termination Character

This register contains the ASCII value of the command line terminating character (carriage return). The factory default value is ASCII 13 — the carriage return character. You can set register S3 to any value between 0 and 127.

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Intel PRO/100 appendix Register Reference S0 Ring to Answer After, S1 Ring Counter, S2 AT Escape Character

PRO/100 specifications

The Intel PRO/100 network adapter series, introduced in the mid-1990s, revolutionized networking by providing robust performance and reliability for both desktop and server environments. These adapters were pivotal in enabling fast Ethernet connectivity, helping to establish standards that would be instrumental in the advancement of network technology.

One of the primary features of the Intel PRO/100 series is its support for 10/100 Mbps Ethernet speeds. This dual-speed capability allowed organizations to transition seamlessly from older 10 Mbps networks to faster 100 Mbps connections without the need for a complete hardware overhaul. This adaptability made the PRO/100 cards a flexible choice for various network architectures.

Another significant characteristic of the Intel PRO/100 is its use of advanced bus mastering technology. This feature enhances data throughput by allowing the network adapter to take control of the system's bus when transmitting data. By doing so, it minimizes CPU overhead, which results in better overall system performance and efficient network communication. This was particularly beneficial in environments where network traffic was heavy, allowing the processors to handle other tasks without being bogged down.

The Intel PRO/100 series was also incorporated with Intel’s Plug and Play technology. This innovation simplified the installation process, automatically detecting the hardware and configuring it to work with existing system resources. As a result, system administrators could save time and reduce errors during setup, making it an attractive option for businesses looking to streamline their IT operations.

In terms of compatibility, the PRO/100 adapters supported a variety of network operating systems, including Windows NT, Linux, and Novell NetWare, providing users with a versatile solution for integrating into existing infrastructures. Furthermore, the cards were designed with high-quality, durable components to ensure longevity and reliability even in demanding environments.

Intel also emphasized the importance of network security and management with these adapters. The PRO/100 series featured capabilities for diagnostics and performance monitoring, allowing administrators to quickly identify and resolve network issues. Advanced features like Wake-on-LAN (WoL) provided additional functionality, enabling remote management and maintenance.

In conclusion, the Intel PRO/100 network adapter series represented a significant leap in networking technology during its time. With features such as dual-speed functionality, bus mastering, Plug and Play installation, and extensive compatibility, it laid the foundation for future innovations in network communication, solidifying Intel's reputation as a leader in networking solutions. Whether for small businesses or large enterprises, the PRO/100 series offered the reliability and performance critical to maintaining efficient and effective network operations.