000 00308nam a2200121Ia 4500
008 180304s9999 xx 000 0 und d
020 _a9788126564385
100 _aOlivier Hersent
245 0 _aIP Telephony: Deploying VoIP Protocols and IMS Infrastructure
260 _bWiley
365 _b699
942 _cBK
999 _c4229
_d4229