Programming is relayed to a wireless PC-based system that downloads (through a data feed distributed via satellite), stores and inserts advertising during program breaks controlled via a playlist over the satellite-delivered national feed to the individual affiliate's home market; the units also transfer program feeds via address headers disseminated to each affiliate based on their call letters, transmit advertisements and program promotions, and generate a log of ads that have previously aired. The cost of these units is partially reimbursed by The CW, with no more than 50% of the purchase cost paid by the affiliate. Affiliates sent log files of local advertisements over the Internet to a traffic management system located at The CW's corporate offices in Burbank, which handles trafficking, dissemination of the program feed and specified local insertion of advertisements and promotions to each affiliate. After The CW stopped providing support for the traffic system and commercial server in September 2009, responsibility for ad trafficking and insertion was transferred to The CW Plus' individual affiliates, although The CW continues to handle programming and transmission operations.