01079nam a2200325 i 450099100082639970753620020507174102.0971209s1991 us ||| | eng 0471620564b10762590-39ule_instLE01302900ExLDip.to Matematicaeng621.385AMS 94-01CR E.4Bellamy, John535162Digital telephony /John Bellamy2nd edNew York :c1991xix, 572 p. :ill. ;25 cm.Wiley series in telecommunications"A Wiley-Interscience publication."Includes bibliographical references and index.Digital telephone systems.b1076259023-02-1728-06-02991000826399707536LE013 94-XX BEL11 (1991)12013000091938le013-E0.00-l- 00000.i1085802728-06-02Digital telephony42689UNISALENTOle01301-01-97ma -engus 01