If you are a new cust we have SWM systems now that do not require a second line. DTV will only place an order for a SWM if your new account has 5 or more tuners. I you are an existing cust. and you order a DVR it will need a 2nd line. Or it will be a single tuner with 1 line....
This is CABL.com posting #244990. Tiny Link: cabl.co/mbbTC