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The IGS/TR is a two-port multiprotocol router available with one Token Ring connection and one high-speed (up to 4 megabits per second) serial port.
The IGS/TR is software configurable for 4- or 16-Mbps Token Rings. It contains a
20-MHz Motorola MC68030 processor with 1.5 MB of system memory (expandable to 4.5 MB using SIMMs), eight 32-pin sockets for IGS software ROMs, and 32 kilobits of non-volatile memory for storage of network configuration information.
The IGS/TR Token Ring interface uses a Texas Instruments TMS380C16 Commprocessor Token Ring chip set, which executes the FASTMAC software licensed by Cisco from Madge Networks. FASTMAC is a sophisticated data-buffering and data-transfer program that enhances TMS380C16 performance.
Figure 1-1 shows the IGS/TR chassis from a front view.
From the observer's left to right, the light emitting diode (LED) indicator lights represent the following, depending on which option is installed as the second interface:
Table 1-1 provides a summary of the IGS/TR hardware specifications.
| Specification | Description |
|---|---|
| Dimensions | 13"W x 14"D x 4"H |
| Weight | 15 lbs. |
| Power | 90-265 VAC at 47-63Hz 55 watts (maximum) 273 BTU/hr |
| Processor | Motorola 68030--20 MHz |
| Memory | RAM--1.5 MB (expandable to 4.5 MB) ROM--1MB (expandable to 8 MB) 32 KB nonvolatile configuration |
| Network interfaces | 1 Token Ring and 1 Synchronous Serial |
| Serial interfaces | RS-232, RS-449, V.35, X.21 |
| Console ports | 2 RS-232 DB-25 connectors |
| Nonoperating Temperature | -40-85 degrees C |
| Humidity | 5-95%, noncondensing |
| Environment | 0-40 degrees C |
Figure 1-2 shows the rear view of the IGS/TR router.
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