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230 Call security and remote access
Nortel Business Communications Manager 5.0
Planning and Engineering
NN40170-200 01.03 Standard
August 2009
Copyright © 2009 Nortel Networks
Remote DISA on loop start trunks
Loop start trunks provide remote access to BCM from the public network.
They must be configured to be auto-answer to provide remote system access.
A loop start trunk must have disconnect supervision if it is to operate in the
auto-answer mode.
T1 E&M trunks always operate in disconnect supervised mode.
When a caller dials into the system on a line that has auto-answer without
DISA, the system answers with system dial tone and no CoS password is
required. In this case, the remote access package assigned to the line
controls system capabilities.
When a caller dials in on a line that has auto-answer with DISA, the system
answers with stuttered dial tone. This is the prompt to enter a CoS password
that determines which system capabilities are available to the caller.
Remote DISA on a T1 DID and PRI trunk
Remote system access on T1 DID trunks is similar to that of T1 E&M trunks
connected to a private network. The main differences are
• A remote caller is on the public network dialing standard local or long
distance telephone numbers.
• Answer with DISA cannot be administered to a T1 DID and PRI trunk. You
can program the dialed digits to match those of a specific target line DN,
the DISA DN or the Auto DN. If you program the dialed digits to the DISA
DN, only the incoming calls that match the programmed DN receive a
DISA dial tone. Incoming calls with other digits are routed to a target line.
Remote DISA on DPNSS lines
A remote caller can access a BCM system dial tone, select a line pool that
contains exchange lines or DPNSS lines, then dial a number. The procedure
is identical to dialing an outside number from an extension in the local system.
The main features are
• Calls coming from another switch to the BCM system are routed in two
ways, depending on the Answer mode that you program. If the Answer
mode is set to Manual, and the line is assigned to ring at an extension, the
incoming call automatically rings at the assigned extension. If Answer
mode is set to Auto, BCM automatically answers the incoming call.
Because most other DPNSS features are extension-specific, Nortel
recommends that all DPNSS lines are configured as auto-answer lines.
• The Page feature is available to both remote callers and callers within the
system. A remote caller must have DTMF capability to access the Page
feature.
- Planning and Engineering 1
- Contents 3
- NN40170-200 01.03 Standard 10
- August 2009 10
- New in this release 11
- VoIP configuration 12
- DHCP configuration 12
- CLID configuration 12
- FindMe/FollowMe 13
- Remote Modem 13
- Professional Call Recording 13
- 14 New in this release 14
- Introduction 15
- • call security remote access 16
- • CoS password specifications 16
- • dialing plan specifications 16
- Line configuration overview 17
- PRI line configuration 18
- T1-DID line configuration 19
- T1-E&M line configuration 20
- DASS2 line configuration 20
- DPNSS line configuration 20
- DTM module is installed and 21
- Lines are provisioned 21
- Line planning overview 23
- Active physical lines 24
- Target lines 24
- Physical lines 25
- 26 Line planning overview 26
- ISDN BRI loop properties 27
- ISDN BRI T-loops 28
- Calling line identification 31
- Scope of CLID 32
- CLID transmission and receipt 33
- 38 FindMe/FollowMe 38
- 40 InTouch 40
- 42 Remote Modem 42
- Dialing plan set-up 47
- BCM incoming-call processing 49
- BCM dialing plans 49
- Public network DN lengths 50
- Codes for remote access 52
- Codes for incoming calls 52
- Codes for outgoing calls 53
- Routing for outgoing calls 54
- Routing, outgoing BCM calls 55
- Routing for incoming calls 56
- BCM access codes 57
- Park prefix 58
- Direct dial digit 59
- 60 Dialing plan set-up 60
- Dialing plan set-up 61 61
- Carrier codes 62
- BCM feature access codes 62
- Direct dial set configuration 62
- Call routing configuration 63
- BCM call-by-call services 64
- Dialing plan set-up 65 65
- BCM destination codes 68
- Dialing plan set-up 69 69
- 70 Dialing plan set-up 70
- Dialing plan set-up 73 73
- 74 Dialing plan set-up 74
- PRI route types 82
- Delete Button 87
- Table 16 Second Dial tone 87
- Attribute value Description 87
- Public dialing plan settings 89
- Public network settings 89
- Public network DN lengths 92
- Outgoing public calls routing 93
- Carrier code settings 94
- Private network settings 95
- Line pools and DNs 105
- Types of private networks 109
- Keycode requirements 111
- Dialing plan global settings 113
- System-level access codes 114
- List of direct dial sets 115
- Access codes at system level 116
- Callers using BCM 121
- Callers in the public network 121
- Meridian system requirements 124
- Message waiting indication 125
- Break-in inter-operability 126
- UDP-specific programming 128
- CDP-specific programming 129
- Meridian 1 programming 130
- Fallback over VoIP MCDN 131
- Networking with ETSI QSIG 132
- MCDN network features 135
- ETSI Euro network services 135
- Routing for tandem networks 137
- VoIP to tandem systems 142
- BCM network setup 143
- WarehouseHead Office 144
- DPNSS diversion feature 147
- Diversion feature 148
- DPNSS diversion configuration 148
- DPNSS redirection feature 149
- Executive intrusion 149
- Call offer 150
- Route optimization 151
- Loop avoidance 152
- Private networking with DPNSS 152
- Custom DPNSS routing service 155
- DPNSS private networking 155
- Destination codes in BCM 158
- Toronto office 162
- New York office 162
- PRI call-by-call services 163
- Voice messaging 167
- 170 Voice messaging 170
- Centralized voice mail 171
- Configuration levels 172
- Centralized voice mail 173 173
- 174 Centralized voice mail 174
- VoIP overview 175
- Silence suppression 176
- IP telephones in VoIP network 177
- VoIP trunks 178
- IP telephony and programming 178
- Gatekeepers 178
- SIP proxy 178
- IP LANs and WANs 179
- 180 VoIP overview 180
- DTMF handling using RFC2833 181
- SIP proxy configuration 182
- VoIP trunk gateways 185
- 186 VoIP trunk gateways 186
- Local gateway programming 187
- 188 VoIP trunk gateways 188
- VoIP routing table 189
- PSTN access to a remote node 189
- 190 VoIP trunk gateways 190
- VoIP trunk gateways 191 191
- 192 VoIP trunk gateways 192
- VoIP trunk gateways 193 193
- Gatekeeper call scenarios 194
- VoIP trunk gateways 195 195
- CAUTION Operations note: 196
- 198 VoIP trunk gateways 198
- CS1000 as a gatekeeper 201
- CS 1000 configuration 202
- VoIP specifications 203
- MCDN dialing plan settings 205
- Network routing information 205
- T.38 fax 209
- T.38 Fax restrictions 210
- SIP fax over G.711 211
- SIP G.711 restrictions 212
- Meet Me Conferencing 213
- 214 Meet Me Conferencing 214
- Ports overview 219
- 220 Ports overview 220
- Media gateway overview 221
- 222 Media gateway overview 222
- Media Gateways panel 223
- 224 Media Gateways panel 224
- Restriction filters 225
- Direct inward system access 229
- Remote DISA line settings 229
- Remote DISA on DPNSS lines 230
- CoS and DISA 232
- External access tones 233
- Remote access control 235
- Configuration for a PRI trunk 237
- LAN overview 247
- 248 LAN overview 248
- Line configuration planning 249
- Procedure steps 250
- BCM as a DHCP client 251
- 252 BCM as a DHCP client 252
- Data networking overview 253
- Navigation 257
- Network assessment checklist 258
- Required keycodes checklist 258
- VoIP trunks checklist 259
- IP Terminal DHCP Options tab 263
- 264 DHCP configuration 264
- Address ranges tab 266
- Lease information tab 267
- 268 DHCP configuration 268
- DHCP overview 269
- DHCP default configuration 270
- DHCP overview 271 271
- 272 DHCP overview 272
- VLAN overview 273
- DHCP and VLAN 274
- BCM450 Dial Up overview 275
- 276 BCM450 Dial Up overview 276
- BCM450 Dial Up overview 277 277
- WAN failover service 278
- Modem compatibility 278
- ISDN planning and engineering 279
- Ordering ISDN BRI 280
- Supported ISDN protocols 281
- Setting up a dialing plan 283
- Tandem call progression 289
- Destination codes schedules 291
- System A 298
- System B 298
- Example of a fallback network 299
- Figure 61 Call progression 301
- G.711 Fax restrictions 303
- T.38 fax specifications 305
- 306 T.38 fax specifications 306
- BCM450 models 309
- BCM50 models 309
- Default restriction filters 311
- Example of line restriction 312
- Dialing plan specifications 317
- Default access codes 318
- Tips on using access codes 318
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