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Telenor's first automatic exchange was opened at Frogner in Oslo on 22 January 1921.
Photo: Telemuseet / Telenor Kulturarv
Telenor's first automatic exchange was opened at Frogner in Oslo on 22 January 1921.
Photo: Domaas, Stein / Telenor Kulturarv
Telenor's first automatic exchange was opened at Frogner in Oslo on 22 January 1921.
Photo: Domaas, Stein / Telenor Kulturarv
Telenor's first automatic exchange was opened at Frogner in Oslo on 22 January 1921.
Photo: Domaas, Stein / Telenor Kulturarv
Telenor's first automatic exchange was opened at Frogner in Oslo on 22 January 1921.
Photo: Domaas, Stein / Telenor Kulturarv
Telenor's first automatic exchange was opened at Frogner in Oslo on 22 January 1921.
Photo: Domaas, Stein / Telenor Kulturarv
Telenor's first automatic exchange was opened at Frogner in Oslo on 22 January 1921.
Photo: Domaas, Stein / Telenor Kulturarv
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