User:Dpeschel

/Sandbox

To do in Panel switch

 * It's organized by components, but some section headers (like "Stuck sender") are not clearly components. Fix this.
 * Add more section headers when needed.
 * My edits to add "Telephone numbering" etc. introduce useful background information, but need to be reorganized.
 * Make my style match the original.
 * Expand abbreviations like SXS.
 * Try to introduce concepts/terms in only one place, as early as possible.
 * See copy/move notes in next section.
 * If current polarity is only used for synchronization, it doesn't carry information; thus I believe the comment about bit-to-baud ratio is wrong. Check with other people.
 * Check titles and page numbers (or URLs) cited. Add links to references, or citations.

To do in Panel call indicator

 * Needs background information. When was it invented?  Who invented it, AT&T or another organization?  How long was it used?  Which other types of equipment work with it?  Specific people, dates, etc.?
 * Clarify that it was invented to work in the US, so it is tied into the US numbering and office organization system. Be brief, however.
 * Need picture of a call indicator. Encoder might be interesting.  Other pictures might be interesting.
 * Write examples. Cases: 4 digits, 4 digits + party, 5 digits.  If possible, use real Seattle numbers.
 * Scan of part of a phone book page showing party line entries, or manual office line numbers >10000, would be interesting.
 * Copy or move information about sending 7 digits (used in tandem offices) from Panel office. I need more information about # digits and encoding as they evolved over the years.  Sending to a call indicator is not the same as sending to a register in a tandem office.
 * Correct, then copy or move information about bit-to-baud ratio from Panel office.
 * Explain meanings of names for digit "slots", particularly Stations. A "station" = an individual telephone = an individual telephone in a party line, but the stations digit is also used for ten-thousands.
 * Or perhaps remove the word "stations" from the table.
 * Add information about the heavy positive pulse (at time 17) once I understand it.
 * Find schematics and add information about how unused combinations are decoded? It may have changed over the years.
 * Consider using background color to distinguish 0 from 1 bits, since that's more important than polarity.
 * Ask blind users about Braille and speech accessibility.
 * I couldn't figure out how to use nested tables, but it may still be possible.
 * Add a link from "PCI" page.
 * Check titles and page numbers (or URLs) cited. Add links to references, or citations.