... public, integrating, 354 NANP, 351 number normalization, 355 - 356 overlapping, 352 privatedesigning, 349integrating with public, 353 PSTN, 350 scalable, 351 VoIP, accomodating, 355 - 356 Oobjectives ... operation, 50 9 via-zone gatekeepers, configuring on Cisco UBE, 54 4 -54 8 voice band data, 66-69, 75 voice card command, 1 15 voice compression, codec complexity, 95- 97 voice gateways. Seegateways voice ... 255 - 256 user agents, 294VAD, effect on bandwidth, 90-91verifyingCOR, 434digital voice ports, 2 25- 232DSP farm configuration, 119-120gatekeepers, 487-488, 50 2 -50 4RAI, 51 2 -51 5fax relay 56 5PRI...