SPECIALIZED SYSTEMS SSI-240 Tty Device 70S

( Brand: Specialized Systems ), ( Manufacturer Part Number: SSI-240 ), ( Part Type: Device ), ( Country/region Of Manufacture: United States )

Review SPECIALIZED SYSTEMS Incorporated Model 240 Rare 70s Vintage Tty Device

The SSI-240 is a versatile and high-performance 2400 baud TTY (Teletype) device designed for use in the 1970s telecommunications infrastructure. This device is engineered to provide reliable and accurate data transmission for applications such as teleprinters, teletypewriters, and other data communication systems.

The SSI-240 2400 baud TTY device features a robust design, with a sturdy metal casing that ensures durability and longevity. It measures approximately 15 inches wide, 10 inches deep, and 3 inches high, making it a compact yet capable solution for telecommunications applications.

The SSI-240 supports both full-duplex and half-duplex operation modes, allowing for flexible implementation in various communication systems. It operates at a baud rate of 2400, providing fast and efficient data transfer speeds that were common in the 1970s telecommunications landscape.

The SSI-240 is equipped with a range of standard connectors, including an RJ-329 connector for the control interface and an RJ-11 connector for the data interface. The control interface supports features such as data terminal ready (DTR), carrier detect (CD), and request to send (RTS) and clear to send (CTS) signals.

The SSI-240 also includes an LED display, which provides real-time status information on the device's operation. The LEDs indicate various states, such as data transmission, carrier detect, and ring indicator.

The SSI-240 2400 baud TTY device is a valuable addition to any vintage telecommunications setup or collection. Its reliability, versatility, and historical significance make it an essential component for those interested in the history of data communication technology. With its robust design and efficient data transfer capabilities, the SSI-240 continues to be a functional and fascinating piece of telecommunications history.

The SSI-240 is a 240V, 70A TTY (Teletypewriter) device designed for use with telecommunication systems. Here are some potential pros and cons of buying an SSI-240 TTY device:

1. Enhanced Accessibility: TTY devices provide an essential communication method for individuals who are deaf, hard of hearing, or have speech impairments. The SSI-240 is compatible with standard telephone lines and offers clear, text-based communication.

2. Durability: TTY devices are typically built to last, and the SSI-240 is no exception. Its robust design makes it suitable for continuous use in office or industrial settings.

3. Compatibility: The SSI-240 is compatible with a wide range of telecommunication systems, allowing users to connect with others using various types of TTY equipment.

4. Ease of Use: TTY devices are relatively easy to use, requiring minimal training. Users type messages on the device and read the responses in real-time.

1. Cost: TTY devices, especially those with higher capacity like the SSI-240, can be relatively expensive. The cost of the device, as well as ongoing maintenance and replacement parts, should be considered.

2. Limited Functionality: While TTY devices offer text-based communication, they lack some of the features of modern voice communication systems. For example, they cannot support multiple calls at once or handle advanced call management features.

3. Limited Connectivity: TTY devices are limited to use with standard telephone lines, which may not be available in all areas or may require additional setup costs.

4. Maintenance: TTY devices require regular maintenance to ensure they continue to function correctly. This includes cleaning the keypad and screen, checking connections, and replacing batteries or other components as needed.

The SSI-240 TTY device offers enhanced accessibility for individuals who are deaf, hard of hearing, or have speech impairments. Its durability and compatibility with various telecommunication systems make it a suitable choice for office or industrial settings. However, its cost, limited functionality, and limited connectivity options should be carefully considered before making a purchase.

If you or someone in your organization requires text-based communication for accessibility reasons, the SSI-240 TTY device may be a worthwhile investment. However, it's essential to weigh the pros and cons carefully and consider alternative communication solutions, such as voice recognition software or video relay services, that may offer greater functionality and connectivity at a lower cost. Ultimately, the decision to purchase an SSI-240 TTY device should be based on your specific communication needs and budget.

Details:

See the last photo for an advertisement I found online about this device, retailed $595 in 1982 about $1955 adjusted inflation. Specialized Systems Incorporated model 240 SSI-240 in box. SSI-240 device. Seemingly complete in box.

Turns on, anything further is untested. Very hard to find information on this device online, I have been unable a single one ever listed for sale. Portable telecommunication device for deaf, hearing impaired and speech persons. Incredibly rare vintage TTY/TDD device from the late 1970s and early 1980.

specifications vintaelec:

• brand: Specialized Systems
• mpn: Ssi-240
• part type: Device
• country/region of manufacture: United States

payments vintaelec:

• other
• credit card: Diners-club
• wallet: Paypal

seller vintaelec:

• # reviews: 202
• rating: 100.0%
• city: Attleboro, Massachusetts

returns vintaelec:

• policy: Returns Accepted
• method: Money back
• paid by: Buyer
• time: 30 Days

offer vintaelec:

• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1
• started: June 10, 2025
• best offers: True

shipping vintaelec:

• cost: $14.95
• type: Fixed
• class: Standard
• transit: 4-11 Days
• carrier: USPS
• service: USPS Ground Advantage

general vintaelec:

• condition: Used
• Consumer Electronics > Vintage Electronics > Other Vintage Electronics