... gatekeepers, 47 9 -48 6hardware and software require-ments, 44 5RAI, 510-515signaling, 44 5 -46 3technology prefixes, 44 4, 46 9 -47 1verifying, 48 7 -48 8, 502-5 04 zone prefixes, 46 8 -46 9zones, 44 4multipoint ... operation, 512-515signaling, 44 5RAS, 44 6- 46 8technology prefixes, 44 4configuring, 46 9 -47 1, 49 5 -49 7zone bandwidth, verifying, 509zone prefixes, 44 4configuring, 46 8 -46 9, 49 3 -49 4gateway controlled ... 9-10, 13MGCP, 11-13SCCP, 12- 14 SIP, 14 568 H.323gatekeepers, 256-258, 44 1 -44 2CAC, 5 04- 508call flow, 46 4 -46 8call routing, 47 1 -47 9configuring, 48 9 -49 0, 49 3 -49 7dial peers, configuring, 500,...