Black Box RS232 2-Port Data Sharer

The Black Box TL601A-R2 is a two-port RS-232 data sharer that lets you connect two separate devices to one modem and a single phone line. By sending both data streams through one link, it helps organizations cut recurring line charges while still giving each device immediate access to remote hosts or networks.

The unit passes data transparently at speeds up to 64 kbps and handles both synchronous and asynchronous transmission. It works with IBM communication methods such as half-duplex Bisynchronous Communication and Synchronous Data Link Control, so it fits neatly into many existing mainframe or midrange setups.

An internal anti-streaming circuit prevents one device from monopolizing the line, and front-panel switches let you enable or disable each subchannel without tools or downtime. LED indicators show link and port status at a glance, making troubleshooting quick for on-site staff or remote technicians.

Fifteen-kilovolt ESD protection shields connected equipment from electrostatic events, which is especially valuable in manufacturing areas, warehouses, laboratories, or any environment where legacy serial gear is still in active use. Whether you are an IT manager maintaining older point-of-sale terminals or an engineer linking industrial controllers, this sharer delivers reliable, cost-saving connectivity in a compact standalone box.

• Connects two RS-232 devices to a single modem and phone line
• Transparent data handling up to 64 kbps
• Works with synchronous and asynchronous traffic
• Compatible with IBM protocols including SDLC and half-duplex Bisync
• Anti-streaming circuitry prevents line lock-up
• Individual subchannel enable or disable switches
• Front-panel LED indicators simplify monitoring
• 15 kV ESD protection safeguards equipment
• Supports full- and half-duplex operation