TY  - BOOK
AU  - Bellamy,John
TI  - Digital telephony
SN  - 0471620564
AV  - TK5103.7 .B44 1991 
PY  - 1991///
CY  - New York : 
PB  - Wiley, 
KW  - Digital telephone systems
N1  - Includes bibliographical references and index; "A Wiley-Interscience publication."
UR  - http://www.loc.gov/catdir/enhancements/fy0607/90037906-d.html
UR  - http://www.loc.gov/catdir/enhancements/fy0607/90037906-t.html
ER  -