Black Box TL601A-R2

Overview

The Black Box TL601A-R2 is a two-port RS-232 data sharer designed to connect two separate devices to a single modem and phone line. It enables organizations to reduce recurring line charges by transmitting both data streams through one link while maintaining immediate access to remote hosts or networks. Supporting data speeds up to 64 kbps, it handles both synchronous and asynchronous transmissions, making it suitable for legacy systems and mainframe or midrange environments.

Key features

• Connects two RS-232 devices to one modem and phone line, reducing communication costs without sacrificing access.
• Transparent data handling at speeds up to 64 kbps ensures smooth and efficient data transfer.
• Supports both synchronous and asynchronous traffic, accommodating a wide range of serial communication needs.
• Compatible with IBM communication protocols such as half-duplex Bisynchronous Communication and Synchronous Data Link Control (SDLC), fitting well into existing infrastructures.
• Internal anti-streaming circuitry prevents one device from monopolizing the line, ensuring fair access for both connected devices.
• Front-panel switches allow enabling or disabling each subchannel easily, without requiring tools or downtime.
• LED indicators provide clear, real-time status of link and port activity, simplifying troubleshooting for on-site or remote technicians.
• Robust 15 kV electrostatic discharge (ESD) protection safeguards connected equipment from static events common in industrial or laboratory environments.
• Supports both full- and half-duplex operation, offering flexibility for various communication setups.

Key specs

• Data rate: up to 64 kbps
• Ports: 2 RS-232 serial ports
• Communication modes: synchronous and asynchronous
• Protocol compatibility: IBM half-duplex Bisynchronous Communication, SDLC
• ESD protection: 15 kilovolts
• Operation: full- and half-duplex
• Indicators: front-panel LEDs for link and port status
• Controls: front-panel switches for subchannel enable/disable

Connectivity and compatibility

This data sharer integrates seamlessly with legacy RS-232 devices and modems, making it a practical choice for environments where older serial equipment remains in use. Its compatibility with IBM protocols ensures it fits well into mainframe and midrange communication setups, supporting both half- and full-duplex modes to match various system requirements.

Performance and reliability

The TL601A-R2 maintains reliable data transmission by preventing line lock-up through its anti-streaming circuitry, which balances access between connected devices. Its 15 kV ESD protection guards sensitive equipment against electrostatic damage, a critical feature in industrial, warehouse, or laboratory settings where static discharge is common. The clear LED indicators and easy-to-use switches enhance operational reliability by simplifying monitoring and control.

Ideal uses and environments

This unit is well suited for IT managers and engineers who need to maintain or extend the life of legacy serial devices such as point-of-sale terminals, industrial controllers, or communication equipment in manufacturing and laboratory environments. It offers a cost-effective solution for reducing phone line expenses while ensuring continuous, dependable access to remote networks or hosts.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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