Matches in DBpedia 2015-10 for { ?s ?p "A "Community Dial Office" (CDO) was a small Class 5 telephone exchange in a rural area.These most often provided capacity for 1000 or fewer customers and were designed for unattended operation. CDOs could be step by step, all relay or crossbar. Many offices provided four-digit local dialling to small rural communities where a call outside the local exchange was long distance."@en }
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- Community_dial_office comment "A "Community Dial Office" (CDO) was a small Class 5 telephone exchange in a rural area.These most often provided capacity for 1000 or fewer customers and were designed for unattended operation. CDOs could be step by step, all relay or crossbar. Many offices provided four-digit local dialling to small rural communities where a call outside the local exchange was long distance.".