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74F8631 - IBM Token Ring Attachment Module
- Connects PCs to IBM Token Ring networks.
- Provides physical layer interface for Token Ring.
- Supports Token Ring protocol standards.
- Designed for integration into IBM PC architecture.
- Enables network connectivity for workstations.
- Facilitates data transmission over Token Ring cabling.
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Product Overview
The IBM Token Ring Attachment Module (TRAM) is a hardware component designed to connect IBM Token Ring networks to personal computers. It facilitates network communication by providing the necessary interface and protocol handling for the Token Ring standard.
Technical Information
| Network Technology | Token Ring |
| Interface Type | Proprietary IBM Connector |
Additional Specifications
| Compatibility | IBM Personal Computers |
Product Description
The IBM Token Ring Attachment Module, identified by the SKU 'Token', is a specialized piece of networking hardware. It was developed to bridge the gap between the then-prevalent IBM Token Ring local area networking technology and individual personal computers. This module typically housed the necessary circuitry to manage the token passing protocol, handle data framing, and interface with the physical media of the Token Ring network, such as shielded twisted-pair cabling. Functionally, the TRAM acted as a network interface card (NIC) or an adapter for specific IBM systems. It translated the digital signals from the computer's bus into the electrical signals required for Token Ring transmission and vice versa. This ensured that the PC could participate in the token-based access method, allowing for orderly data exchange on the ring and preventing collisions. While specific technical specifications like data transfer rates or supported cable types would vary based on the exact model and generation of the TRAM, its primary purpose remained consistent: to enable IBM PCs to reliably connect and communicate on an IBM Token Ring network. Its existence highlights a period of diverse networking standards before the widespread dominance of Ethernet.
