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1-14 About the PathBuilder S24x, 26x, and 27x switch
Hardware Components
Figure 1-9. CMEM SIMM
Expansion Port
I/O Slots
The PathBuilder S24x, 26x, and 27x switch motherboard has eight full-size
expansion card slots (see Figure 1-6). Expansion I/O cards have I/O connectors that
extend through the rear panel.
Port numbers for the ports on the I/O cards have a fixed relationship to the chassis
expansion slot number. Six port numbers are reserved for each slot. If a slot contains
an I/O card that does not support the full port count reserved for that slot, or the slot
is empty, the extra port numbers remain unused.
Slot Number and
Port Numbers
This table shows the port numbers associated with each card type.
Description of
Serial/Network
Ports
Ports 1 through 3 are connected to the motherboard with ribbon cables. Ports 1 and 2
are DIM ports and are functional only if a DIM is present. Port 3 is a dedicated V.36
DTE port.
Ports 1, 2, 3, and 6 on the rear panel of the chassis are DB-25 female connectors. Port
4, (the Ethernet AUI port) uses a DB-15 connector. Ports 1 and 2 may require
adapters, depending on the DIM used. An adapter cable is available for Port 3.
Lithium Battery
Slot Number Port Number Associated Card
Motherboard I/O 1-6 Motherboard
1 7-12 Voice cards (E & M, FXS,
Server Module, T1, E1).
The T1/E1 is restricted to
Slot 8.
2 13-18
3 19-24
4 25-30
5 31-36
6 37-42
7 43-48
8 49-54