handshaking issues, activating toll-free dedicated circuit and, 197
harassment calls, resolving, 335–336
hardware
choosing for VoIP service, 317–318
confirming/denying handshaking problems with on dedicated circuits, 284–285
dedicated service requirements for, 57–59
identifying manufacturers for, 19–20
installation problems with, 206
multiplexers, 32–33
restoring to default settings, 273
setup for dedicated circuit, 60
troubleshooting by rebooting, 272–274
understanding costs of dedicated circuits, 36
VoIP gateway, 310
hardware vendors
activating toll-free dedicated circuit and, 195, 196
assisting with dedicated circuit order forms, 134
finding, 19–20
finding new, 340–341
information on technical cut sheet, 163
as information resource, 338
inside wiring and, 62–63
installing new inside wiring, 119
overview, 18–19
participating in hot cut phone call, 184–185
planning for system expansion with, 21
providing inside wiring, 63–64
supplying used/refurbished systems, 28
troubleshooting assistance from, 22
Hawaii, troubleshooting toll-free calls from, 253–256
head-to-head dedicated toll-free testing, 291
hot cut
activation without, 187–189
negotiating without RespOrg, 191–192
requesting on dedicated circuit, 194
using to activate dedicated toll-free numbers, 183–185
H.323 protocol, VoIP and, 311–312
hung calls, checking for, 104
hunt group, toll-free numbers and, 178
hybrid phone systems, 32