00745nam a22001577a 4500952013600000952013900136999001500275020002100290082001700311100002100328245004600349260003500395300003500430650011500465942000700580  00104070aRIUbRIUd2012-08-02ePurchased: Allied Book Companyg448.40l0o621.382 DODp2295r2012-08-02 00:00:00w2019-02-21yBK  00104070aRIUbRIUd2012-09-26ePurchased: Allied Book Companyg448.40l0o621.382 DODp2294r2012-09-26 00:00:00t2w2019-02-21yBK  c3178d3178  a8178089955 (pbk)  a621.382bDOD  aDodd, Annabel Z.  aThe essential guide to telecommunications  aDelhibPearson Educationc2002  axxiv, 500 p.b: ill.c; 24 cm.  aDigital communicationaTelecommunicationsvTelephone systemvBell systemvPublic networkvDigital modemsvFEAS  cBK