Data network overview  [videorecording] / 
produced by Cindy Oehler ; directed by Gary McConnell 
 - 1 videocassette (VHS) (25 min.) :  sd., col. ;  1/2 in. 
 - Telecom fundamentals [videorecording] .
<br/><br/>Writer, Mark Bade ; graphic, Jay Hoppie  Writer, Mark Bade ; graphic, Jay Hoppie 
<br/><br/>Narrator: Lisa Keefe, Tom O'Toole 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.