Category:Telephone switching systems: Difference between revisions
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[[Image:Telephone Switching Systems B Board Machine Originated Calls.jpg|thumb|right| A "B" Board telephone switching machine for terminating calls to the manual office and redirect to the automatic line]] | |||
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Revision as of 22:58, 15 February 2012
IEEE GHN Category
Pages in category "Telephone switching systems"
The following 28 pages are in this category, out of 28 total.
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Media in category "Telephone switching systems"
This category contains only the following file.
Telephone Switching Systems B Board Machine Originated Calls.jpg 612 × 489; 318 KB
