Talk:DS4/NA

Context
This article does not explain the context of the subject matter and need referencing. Jezhotwells (talk) 16:53, 19 December 2009 (UTC)
 * At lead, I added ""in telecommunications" wikilink for context, and removed Context notice; added Tech. notice. JoeNMLC (talk) 16:16, 13 October 2021 (UTC)
 * Also added See also section, with "Outline of telecommunication" JoeNMLC (talk) 16:19, 13 October 2021 (UTC)