Cabletron Systems DMS-100 - Manual (Page 29)

Chapter 1: Introduction to the EIU 29
DMS-100 Family EIU User Guide TELECOM12
RAM. The NTEX22CA provides 32 Mbyte of RAM and higher
throughput performance.
NTEX22 also contains a peripheral bus (P-bus) to F-bus interface. The P-
bus to F-bus interface connects the processor bus with the frame bus, which
in turn is connected to the local message switch (LMS) through the rate
adaptor.
The IPF card is a common processor card used by almost all ASUs and
runs the Support Operating System (SOS).
Figure 4 Link interface shelf, with 2-slot EIU locations
2-slot ASU
Top view of LIS shelf
NT9X84 NT9X85 Ethernet AUI PB
NTEX22 Integrated processor and F-bus card 2-slot EIU
Rear paddle boards Front cards
Ethernet interface card