| 000 | 00457nam a22001337a 4500 | ||
|---|---|---|---|
| 020 | _a(pbk) | ||
| 082 |
_a621.385 _bTOP |
||
| 100 | _aPhotocopy | ||
| 245 | _aTopic digital telephony | ||
| 260 |
_aIslamabad _bRiphah International University _c2001 |
||
| 300 |
_a59 p. _b: ill. _c30 cm. |
||
| 650 |
_aElectrical engineering _aTelephony digital _vanalog digital conversion _vDigital transmission _vDigital switching _vControl memory _vDigital network _vFEAS |
||
| 942 | _cBK | ||
| 999 |
_c4659 _d4659 |
||