Case 8000 Series - The 8425;8525 Tgate;Router Module

The only indicator is a green LED, serving as a 'heartbeat', blinking at a
rate dependent upon processor utilisation.
The TGate/Router card displays real-time status information via the 8325
display/control panel, in line with other 8325 cards (see Chapter 7 of the
8325 Installation Guide).
The front of the TGate/Router card carries three 96-way male DIN
connectors to engage with the 8325 backplane.
2.1.2 The 8425/8525 TGate/Router Module
The TGate/Router module for the 8425/8525 systems comprises a three-
board combination of UPM4 (X890-607011), TGate/Router (X890-606712)
and Manager PAM (X890-606811). The UPM4 and TGate/Router fit in the
front of the chassis, while the PAM fits into the rear, as shown in Figure
2-2.
Figure 2-2 8425/8525 TGate Module Combination
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Motherboard
There are no configuration links or switches on either the UPM4 or the
TGate/Router.
The UPM4 has several activity indicator LEDs. A seven-segment LED
display is used to display real time status information, along with a
heartbeat indicator, in line with other 8425/8525 cards. A single green
LED indicates processor activity, and a bar graph display indicates further
status information.
The PAM rear panel carries four, centrally-mounted 25-way D-type female
connectors, all of which are reserved for future use. At the top is a 15-way
female D-type connector providing the AUI port. Below the AUI is a cutout
for an optional LPIM providing either a 10Base2 (Cheapernet) or a
X870-300351 Issue 1 2-2 Rev.0