#let title = "Overview of the Bell System Architecture"


#set page("us-letter",
header: [
    #set text(8pt)
    #smallcaps[#title]
    #h(1fr) Arthur Grisel-Davy for Palitronica Inc.
  ],
footer: [
    #set align(right)
    #set text(8pt)
    #counter(page).display(
      "1",
    )
  ]
)

#align(center)[#text(weight:"bold",size:20pt)[#title]]

#v(2cm)
#outline(indent: 1em)

#pagebreak()
= Schematic
#align(center)[
#figure(
    image("schematic.svg",width:100%)
)
]

#pagebreak()
= Technical Information

Here is the information that we have or suppose about the different components of the system.

== Chassi
The chassi of the VMC is a CC-VPX3-06-99.
VPX stands for Virtual Path Cross-Connect and is a set of standards for connecting components, apparently common for products from defense contractors.
VPX seems to be both a hardware format standard and a communication standard.
The chassi is a VPX chassi as it offers to connect VPX-compatible boards.
It also provides power to the boards --- although it is still unclear how precisely.

#text(fill:red)[Q: It would be helpful to get a schematic or a photo of how the boards are installed in the chassi, and how they receive power.]

== 68PPC2 SBC
The board in the first slot of the chassi is a 68PPC2.
This board is connected to the Mission Computer (via the Comm. Converter Board).
It is unclear if this board processes some data or if it is only responsible for communication.

#text(fill:red)[Q: Info about the role of this card would be helpful in identifying the points of interest.]

== 68G5
The second board, installed in slot 3, is a 68G5.
The role of this board needs to be clarified. It is connected to the Software Control Module (SCM) but the role of both these components is unclear.


#text(fill:red)[Q: Info about the role of this card would be helpful in identifying the points of interest.]