inside pabx telephone booth that has number connecting cables many colors |
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navigate by keyword : analog background booth branch cable cables central circuit colors communicate communication commutator complex computer computing connect connecting connection connector device dial digital electrical electronic equipment exchange hardware has inside internal jumping line loop many network number obsolete office old pabx pbx phone private problem screen server switch switchboard system systems technology telecommunication telecommunications telephone that unit vintage wires |
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Inside a PABX telephone booth that has a number of connecting cables in many colors in the analog system |
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