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| / < Protocols < Telephone, POTS < html < Automatic_telephone_exchange_files |
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FILE 150px-Pbx-satellite-telephone-exchange-0a.jpg (4.778KB)
FILE 15px-PD-icon.png (711 bytes)
FILE 180px-KinnawannaTelstraExchange.jpg (6.143KB)
FILE 180px-Switchboardof1924.jpg (16.452KB)
FILE 180px-Tivadar_Pusks.jpg (6.517KB)
FILE 200px-Att-co-houston.jpg (6.454KB)
FILE 200px-DSCN1066.JPG (10.693KB)
FILE 200px-JT_Switchboard_770x540.jpg (11.420KB)
FILE 250px-Nortel_DMS100_public_voice_exchange.jpg (8.597KB)
FILE 300px-Central_Office_Locations.png (70.594KB)
FILE 300px-Wire_Center_Locations.png (44.445KB)
FILE 40px-Commons-logo.png (2.230KB)
FILE 50px-Gnome-speakernotes.png (3.767KB)
FILE index_002.php (15.190KB)
FILE magnify-clip.png (267 bytes)
FILE play.png (4.248KB)
FILE poweredby_mediawiki_88x31.png (1.933KB)
FILE wikimedia-button.png (890 bytes)
