You are almost right. VDSL2 allows for higher speeds at shorter distances. ADSL/ADSL2+ has farther reach but slower speeds. Also Centurylink has 2 VDSL2 modems, C1000A and the C1000Z. As far as I know, the C1000A is the only VDSL2 modem sold at stores like Best Buy and Walmart and they are the same price as you can get from Centurylink.






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