Outgoing
The various switching entities in the building could share the same outgoing section, and this was particularly advantageous for trunks to particularly distant parts of the city, consolidating traffic that would otherwise be scattered among smaller and less efficient trunk groups or require using a tandem switch office.
Idle outgoing trunks were picked by the traditional "sleeve test" method, as lines were, except that hunting was the usual practice for trunks rather than a special service feature. The selector moved upward through twenty terminals, checking for one with an ungrounded sleeve lead, then selecting and grounding it (this in the Battery Cutoff version, which was the later, more fireproof and more widespread one). If no trunk was idle, the selector sent back an All Circuits Busy tone (reorder tone). There was no provision for alternate routing as in earlier manual systems and later more sophisticated mechanical ones.
Read more about this topic: Panel Switch
Famous quotes containing the word outgoing:
“Why don’t you go home to your wife? I’ll tell you what. I’ll go home to your wife and outside of the improvements, you’ll never know the difference. Pull over to the side of the road there and let me see your marriage license.”
—S.J. Perelman, U.S. screenwriter, Bert Kalmar, Harry Ruby, and Norman Z. McLeod. Groucho Marx, Horsefeathers, a wisecrack made to Huxley College’s outgoing president (1932)
“I thought my razor was dull until I heard his speech and that reminds me of a story that’s so dirty I’m ashamed to think of it myself.”
—S.J. Perelman, U.S. screenwriter, Bert Kalmar, Harry Ruby, and Norman Z. McLeod. Groucho Marx, Horsefeathers, as a newly-appointed college president commenting on the remarks of Huxley College’s outgoing president (1932)