The caller turns the crank on the field telephone to signal the switchboard. The when the signal flap on the switchboard drops, the operator answers:
“hier Vermittlung _______ (name of the switchboard exchange).”
For example, if the switchboard is associated with the Second Infantry Division, the switchboard operator would say: ” hier Vermittlung Zweite Infanteriedivision.” If the switchboard was located near the front lines, it would have a code name for the exchange so as not to give possible enemy eaves droppers information.
The caller responds
“Bitte ______ (name of the party to be called).”
For example, if the caller wants to place a call to the artillery battalion, he would say: “Bitte Artillerie-Bataillon.” If near the front lines, the artillery battalion would have a code name.
The switchboard operator responds:
“______ (name of the party to be called), ich rufe.”
For example, if the called party was the artillery battalion, the operator would say, “Artillerie-Bataillon, ich rufe.” Translated, that would be, “I am calling the artillery battalion.”
The operator connects the call and signals the called party. The called party responds:
“hier _______ (name of the called party).”
The operator disconnects from the convesation.
After the conversation has ended, the called party signals the switchboard by turning the field telephone crank. The operator then responds:
“hier Vertmittlung ________(name of the switchboard exchange). Wird noch gesprochen? (Is there still talk?)”
If there is no response, the switchboard operator disconnects the call.
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WW2 German Field Telephone Equipment 