Allied Telesis AT-FS238a/1, AT-FS238b/1, AT-FS238b/2 Twisted Pair Port, Port Speed, Duplex Mode

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AT-FS238a/x and AT-FS238b/x Series Installation Guide

Twisted Pair Port

The AT-FS238a/x and AT-FS238b/x Series Bridging Converters have one 10Base-T/100Base-TX twisted pair port. The twisted pair port features a RJ-45 connector.

Port Speed

The twisted pair port is compliant with the 10Base-T and 100Base-TX standards and is capable of either 10 Mbps or 100 Mbps operation. You can set the port speed manually or, since the port is IEEE 802.3u auto-negotiation compliant, you can allow the bridging converter to set the port speed automatically. With auto-negotiation, the speed of the port is set automatically by the bridging converter after it determines the speed of the end-node connected to the port. Auto-negotiation is designed to ensure that the port on the bridging converter and the end-node are operating at the same speed and that they are communicating at the highest possible common speed of the devices.

Duplex Mode

Duplex mode refers to how an end-node receives and transmits data. If an end-node can receive or transmit data, but not both simultaneously, the end- node is operating in what is referred to as half-duplex mode. If an end-node can both receive and transmit data simultaneously, the end-node is said to be operating in full-duplex mode. Naturally, an end-node capable of operating in full-duplex can handle data much faster than an end-node that can only operate in half-duplex mode.

The twisted pair ports on the AT-FS238a/x and AT-FS238b/x Series Bridging Converter can operate in either half-or full-duplex mode. They are IEEE 802.3u-compliant and use Auto-Negotiation to set the duplex mode setting for you automatically.

For Auto-Negotiation to operate properly on a bridging converter, the end- nodes connected to the converter should also use Auto-Negotiation. If an end- node does not have this feature and has a fixed duplex mode of full-duplex, the result will be a duplex mode mismatch between the end-node and a converter port. A port on the bridging converter connected to an end-node with a fixed duplex mode of full-duplex will operate at only half-duplex. This results in the end node using full-duplex and the switch port using half-duplex. This can produce network performance problems. Should you encounter this situation, you must configure the port on the end-node to use Auto-Negotiation or, if it lacks that feature, to half-duplex.

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Contents AT-FS238a/1 AT-FS238b/1 AT-FS238a/2 AT-FS238b/2 Page Radiated Energy Declaration Of ConformityLaser Electrical SafetyRFI Emission ImmunityAT-FS238a/x and AT-FS238b/x Series Installation Guide Page Table of Contents Appendix B Translated Safety and Emission Information Welcome to Allied Telesyn Where to Find Web-based Guides Document ConventionsTechnical Support E-mail Addresses Contacting Allied Telesyn Technical SupportOnline Support Telephone SupportFor Sales or Corporate Information Returning ProductsTell Us What You Think Page Overview AT-FS238a/xSeries Front Panel AT-FS238a/1 Model DIP Switches 100Base-FX 10Base-T/100Base-TX Model External Power SupplyStore and forward switching mode Key FeaturesLED Status LEDsTwisted Pair Port Duplex ModePort Speed Auto MDI/MDI-X Fiber Optic PortLink Test Mode Selection ButtonMissingLink Smart MissingLink Bridging Converter PerformanceMAC Address Table DIP SwitchesStore and Forward Network Topology Network TopologiesVerifying Package Contents Installing the Bridging ConverterDistance Planning the InstallationAT-FS238b/2 Micron SMF Simplex 40 km 24.8 mi Selecting a SiteAttaching the Protective Feet Installing the Bridging ConverterDIP Connecting a 12VDC Powered Unit Connecting an 12VDC Powered Unit Wiring and Connecting a 12-50VDC Powered UnitPositive, Ground, and Negative Symbols Connecting the Stripped Wire Installing the Bridging Converter Warranty Registration Page Troubleshooting Troubleshooting Environmental PhysicalElectrical Rating EMI/RFI Agency CertificationsMin Avg.3 Max Microns Fiber Optic Port SpecificationsOperating Type1 Budget Distance2 Distance3 RJ-45 Pinout AssignmentsMDI-X Page Translated Safety and Emission Information Translated Safety and Emission Information USA/Canada Safety Lightning DangerEurope EU Translated Safety and Emission Information Betriebstemperatur Sicherheit Gefahr Durch BlitzschlaTranslated Safety and Emission Information Betjeningstemperatur Sikkerhed Fare Under UvejrTranslated Safety and Emission Information Bedrijfstemperatuur Veiligheid Gevaar Voor BlikseminslagTranslated Safety and Emission Information Température De Fonctionnement SécuritéTranslated Safety and Emission Information 13 Käyttölämpötila Turvallisuus SalamaniskuvaaraTranslated Safety and Emission Information Temperatura Di Funzionamento Norme Di Sicurezza Pericolo Di FulminiTranslated Safety and Emission Information Driftstemperatur Sikkerhet Fare For LynnedslagTranslated Safety and Emission Information Temperatura De Funcionamento Segurança Perigo De Choque Causado Por RaioTranslated Safety and Emission Information Temperatura Requerida Para La Operación Seguridad Peligro De RayosTranslated Safety and Emission Information Säkerhet Fara För Blixtnedslag

AT-FS238a/1, AT-FS238a/2, AT-FS238b/1, AT-FS238b/2 specifications

Allied Telesis is a renowned manufacturer specializing in networking solutions, and its AT-FS238 series of switches exemplifies the company's commitment to delivering high-quality networking hardware. The AT-FS238b/2, AT-FS238b/1, AT-FS238a/2, and AT-FS238a/1 are robust, cost-effective Ethernet switches that cater to various networking needs, including small to medium-sized enterprises and branch offices.

These switches are designed with several key features that enhance performance and reliability. One of the standout characteristics is their support for high-speed connections, with 10/100/1000 Mbps ports that ensure fast data transfer rates and efficient network operations. This high-speed capability is essential for organizations that rely on bandwidth-intensive applications.

Allied Telesis AT-FS238 series switches incorporate advanced technology such as Auto-MDI/MDIX, which automatically detects the type of Ethernet cable connected and adjusts accordingly, eliminating the need for crossover cables. This feature significantly simplifies installation and reduces the likelihood of connectivity issues.

The switches also boast a metal chassis that offers durability and helps maintain optimal performance in various environments. With a robust design, these devices can withstand typical operational stresses, making them suitable for deployment in both office and industrial settings.

In terms of manageability, the AT-FS238 series provides basic configuration options through a user-friendly interface, making it accessible for IT staff who may not have extensive networking experience. The switches support plug-and-play functionality, allowing for seamless integration into existing networks without the need for extensive setup.

Power efficiency is another significant aspect of these switches, as they utilize energy-saving technologies that reduce operating costs while maintaining high performance. This characteristic aligns with the growing emphasis on sustainable tech solutions in modern networking.

Each model in the AT-FS238 series is equipped with a varying number of ports, catering to the specific needs of different networking scenarios. These options ensure that organizations can choose the right model that fits their scalability requirements.

In summary, the Allied Telesis AT-FS238b/2, AT-FS238b/1, AT-FS238a/2, and AT-FS238a/1 switches represent a solid choice for businesses seeking reliable and efficient networking solutions. Their combination of high-speed capabilities, user-friendly features, durable design, and energy efficiency makes them a valuable addition to any network infrastructure.
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