000 00331nam a2200145Ia 4500
008 131008s9999 xx 000 0 und d
082 _a91107 BIL
245 _aIp Telephony
250 _a1
260 _bPearson Education
300 _axxi 331
365 _cRs
546 _aEnglish
650 _aNetwork Design And Engineering
999 _c119996
_d119996