566
routers, 37–39
telephones, 37
DGK (directory gatekeeper), 172
dial plans
call routing tools, 197–206
fault tolerance, 262
international
implementing, 213–217, 220–231
number normalization, 178
Internet access, 385, 390
large-scale
directory gatekeepers, 190–196
gatekeepers, 182–190
large-scale design, 173–175, 180–182, 184–196
peer-to-peer MMS networks, 286
PV-VPN, 293–295
scaling, 265
security, 264
troubleshooting, 261
dialing, multiple-stage, 295
dial peer preference command, 181
dial peer terminator command, 181
dial peer voice voip command, 63
dial peers, 314
failover, 206–208, 210–212
incoming, 463–464
max-conn statements, 122
MMoIP, 314, 329
off-ramp, 328
on-ramp, 313
outgoing, 463–464
POTS
configuring, 314
off-ramp, 328
prepaid services, 439
reducing, 215
VoIP, 201–202
DID, 311
digit manipulation, 175, 295
direct-inward-dial command, 314-316
directories
LDAP services, 361–363
servers, 380
directory gatekeepers, 216, 245
H.323, 253
large-scale dial plans, 190–196
distribution
dial plans, 174
tables, 499–551
DNIS (dialed number identification service), 177,
314, 361
DNS (Domain Name Service), configuring, 326
double talk, 42
DPP (Daily Peak Period), 9
drivers, 283
drop preference, 79
DS (differentiated services), 77
DSCP, 79–80
Expedited Forwarding PHB, 80–81
RFCs, 79
DSCP (Differentiated Services Code Point), 62, 79-
80
DSNs (delivery status notifications), 307
DSP (digital signal processor), 307
DTMF (dual tone multi-frequency), 415
dynamic prompts, 553
E
EART/EARC traffic model, 19
echo
ACOM, 43
customer expectations, 47
eliminating
case study, 53–57
on gateways, 48–49
leak-through, 32
locating source of, 32, 34–35
measuring, 42
service provider expectations, 47
uncancellable, 46
echo cancellation, 39, 41, 46, 50
adaptation period, 42
convergence, 42
coverage, 44–45
insufficient ERL, 43–44
wiggle, 41
echo-cancel enable command, 47
ecosystem partner H.323 gatekeepers, 255
EF (Expedited Forwarding), 80
elements
peer-to-peer MMS networks, 285
devices

Get Deploying Cisco® Voice over IP Solutions now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.