A while back, I did a blog article on the 5-Line switchboard. Since then, more photos have come to light on this very rare late-war switchboard.
Unscrewing and lifting up the front door reveals the front panel…
An electrical schematic for the switchboard is pasted on the inside of the rear door. Note, a simple hole in the side provides access for the a and b telephone wires, the operator’s (Abfr.) telephone wires, and the DC bell/battery (W, WB, _) wires.
For more information about field switchboards check out my new book on WW2 German field telephone equipment… https://www.lulu.com/en/us/shop/rotwang-manteuffel/world-war-2-german-field-telephone-equipment-a-basic-guide-for-reenactors-and-historians/paperback/product-976w9q.html?page=1&pageSize=4
WW2 German Field Telephone Equipment 