The PA-4R-DTR provides up to four IBM Token Ring or IEEE 802.5 Token Ring interfaces. You can set each Token Ring interface for 4-Mbps or 16-Mbps, half-duplex or full-duplex operation, and each interface can operate as a concentrator port or a classic Token Ring station. All Token Ring ports run at wire speed. DTR, developed by the IEEE, defines a method in which the port emulates a concentrator port and eliminates the need for an intermediate concentrator. DTR defines a full-duplex data-passing mode called transmit immediate. Transmit immediate eliminates the need for a token and allows the adapter to simultaneously transmit and receive.
Modem Type
Ports
4 ports
Data Transfer
Wireless
Internal External
Device Type
Connectivity Technology
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