editor
471
edits
Bell wire: Difference between revisions
m
Get the table headings in the right order.
(Be clearer on microfilters. Add table for pin allocation) |
m (Get the table headings in the right order.) |
||
|
{| class="wikitable"
|-
!
|-
| 1 || || ''For non-telephone facility'' ??
|-
| 2 || 'B' wire || Used to be guaranteed more negative voltage than 'A' wire
| 4 || Local earth || ''Needed for 'C' wire signalling, which is obsolete''
|-
| 5 || 'A' wire ||
|-
| 6 || 'C' wire || '' 'C' wire signalling is obsolete''
| |||