Contents 9
Nortel Business Communications Manager 450 1.0
Planning and Engineering
NN40160-200 01.01 Standard
August 2008
Copyright © 2008, Nortel Networks
Dialing plan and routing specifications 273
Destination code leading digits 273
Meridian 1 access versus BCM access codes 273
Routing service record, public line pool 274
Routing service record, destination code 274
Tandem call progression 275
Dialing plan—routing and destination codes specifications 277
Destination codes schedules 277
Second dial tone values and descriptions 278
Private network—DPNSS network services (UK) specifications
279
Example of Private network with DPNSS 279
Calling number values for network example 280
Routing description for network example 280
Guidelines for private DPNSS network dialing plan 281
VoIP trunk gateway specifications 283
T.38 fax protocol restrictions and requirements 283
Example of call flow, PSTN into remote node 283
Detail of call progress for example 284
Example of a fallback network 285
Gatekeeper call scenarios 286
Detail of call progression for example 287
SIP fax over G.711 specifications 289
G.711 Fax restrictions 289
Operational notes and restrictions 290
T.38 fax specifications 291
Example of private network configured for T.38 fax 291
Programmed Media gateway values for example 291
Voice messaging specifications 293
Default VoIP settings specifications 295
BCM450 models 295
Call security and remote access specifications 297
Default restriction filters 297
Default filters for program headings 298
External access tones, definitions 298
Example of line restriction 298
Call progress through restrictions 299
Example of remote line restriction 299
Call progress through restrictions 299