000 00324nam a22001457a 4500
020 _a9788126509294
082 _a621.385
_bBEL-D3
100 _aBellamy, John .C
245 _aDigital Telephony
250 _a3
260 _aNew Delhi
_bHohn Wiley & Sons
_c2010
300 _a643
650 _aDigital Telephony
942 _cBK
999 _c5744
_d5744