Nortel Circuit Card, Installation Manual, Page: 63 / 908

Overview Page 63 of 906
Circuit Card Description and Installation
Operation
This section describes how trunk cards fit into the CS 1000S, CS 1000M, and
Meridian 1 architecture, the buses that carry signals to and from the trunk
cards, and how they connect to terminal equipment. See Table 8 for IPE
parameters.
Host interface bus
Cards based on the IPE bus have a built-in microcontroller. The IPE
microcontroller is used for the following:
• to perform local diagnostics (self-test)
• to configure the card according to instructions issued by the system
processor
• to report back to the system processor information such as card
identification (type, vintage, and serial number), firmware version, and
programmed configuration status.
Intelligent Peripheral Equipment
IPE trunk cards all have a similar architecture. Figure 11 on page 64 shows a
typical IPE trunk card architecture. The various trunk cards differ only in the
number and types of trunk interface units.
Table 8
Differences between IPE parameters
Parameter IPE
Card Dimensions 31.75 x 25.4 x 2.2 cm. (12.5 x10.0 x 0.875 in.)
Network Interface DS-30X Loops
Communication Interface card LAN Link
Microcontroller 8031
Peripheral Interface card NT8D01 Controller card
Network Interface card NT8D04 Superloop Network card
Modules NT8D37 IPE module