That uses multiple channels to process or transmit signals(adjective)
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Use "multichannel" in a sentence
"If we are lucky enough to make them what we call the multichannel customer—we get them to shop with us retail, catalog and dot-com—it doubles again to over $3,000."
"Advertising Age this week turns on BestBuyOn.com, what they describe as a multichannel network with lots of original editorial content and information."
"The Direct Marketing Association, the leading trade organization for so-called multichannel marketing - which includes telephone solicitation - didn't immediately respond to a request by msnbc.com for comment."