Nortel Networks Remote Gateway 50 Manual de usuario Pagina 230
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Page 230 of 258 Emergency Services configuration
553-3001-207 Standard 2.00 January 2006
15 Configure the NRS for the ESA Special Number used.
16 Test ESDN using an analog (500/2500-type) telephone located at the
branch office.
17 Test ESDN using an SRG IP Phone in Normal Mode and in Local Mode.
Determining the dialing plan for ESA calls
In many jurisdictions of the United States and Canada, the emergency number
must be “911”. The call processor cannot have a DN that conflicts with these
digits, but since “9” is often used for NARS AC2 (the local call Access Code),
this is not usually a problem.
ESA for international deployment must support the standard emergency
number “112” and any emergency numbers in use prior to the EU directive.
In general, ESA calls should leave the network through a trunk at the branch
office where the originating telephone is located. To enable this, it is
necessary for telephones at each branch office to supply a unique identifying
prefix to the NRS when the ESA calls are being routed so that the NRS can
select a distinct route for each branch office. This prefix can be configured
with the zone data for the SRG telephones. The provisioning of this prefix is
an enhancement for branch office.
While a variety of numbering schemes are available, Nortel recommends that
customers use “0” + the ESN location code of the SRG + ESDN, where
ESDN is:
• for North America and CALA — “911”
• for members of the European Union — “112” and any other emergency
numbers in use prior to the EU directive
This number, referred to here as the ESA Special Number, is configured as a
special number (SPN) in the NRS so that the Virtual Trunk routes the call to
the branch office.
- Remote Gateway 50 1
- Revision history 3
- Page 6 of 258 Contents 6
- Contents Page 7 of 258 7
- Page 8 of 258 Contents 8
- List of procedures 9
- About this document 11
- Applicable systems 12
- Intended audience 12
- Conventions 12
- Related information 13
- Overview 15
- Page 16 of 258 Overview 16
- Overview Page 17 of 258 17
- Figure 1: 17
- SRG network 17
- Signaling Server 18
- Network Routing Service 18
- Telephones 19
- Main office requirements 20
- Overview Page 21 of 258 21
- Normal Mode 22
- Local Mode 22
- Survivability 22
- Overview Page 23 of 258 23
- Recovery to Normal Mode 24
- Local Mode operation 24
- Virtual Trunks 25
- Bandwidth Management Overview 26
- Miscellaneous items 27
- Page 28 of 258 Overview 28
- Capacity 29
- Branch office dialing plan 30
- ESN Access Codes 31
- Music on Hold 31
- Page 34 of 258 Overview 34
- Setting up the main office 35
- Telephony programming: 38
- Zone parameters 39
- IMPORTANT! 40
- Identifier (Part 1 of 2) 40
- Identifier (Part 2 of 2) 41
- CS 1000 Element Manager 43
- Figure 3 45
- Figure 4 46
- Introduction 50
- Codec negotiation 50
- Codec selection 53
- Codec selection algorithms 53
- Configuration rules 57
- Network Planning 57
- Enabling codecs 58
- Figure 5 59
- Configuring a codec 59
- Configuration using LD 117 61
- CHG ZONE command 61
- Maintenance commands 63
- Maintenance using LD 117 66
- Figure 10 70
- Figure 11 71
- Figure 12 73
- Figure 13 74
- Figure 14 78
- Figure 15 87
- End of Procedure 87
- (Part 1 of 3) 88
- (Part 2 of 3) 89
- Figure 17 92
- Application 93
- Dialing Plan Overview 94
- Figure 19 95
- General legend 95
- Common details 96
- Figure 21 99
- Figure 22 100
- Figure 23 101
- Figure 24 103
- Figure 25 104
- Figure 26 105
- Figure 27 106
- Figure 28 107
- Figure 29 108
- Dialing Plan 116
- Manager 117
- Figure 33 118
- Figure 34 119
- Figure 35 120
- Figure 36 121
- Figure 38 124
- Figure 39 125
- Figure 40 126
- Bandwidth Management 127
- Figure 41 128
- ALTPrefix 130
- Dialing plans 132
- Figure 42 134
- Figure 43 136
- Figure 44 138
- Figure 45 140
- Figure 46 142
- Figure 47 144
- Operating parameters 146
- Feature interactions 148
- Feature packaging 149
- Sample printout 151
- Zone configuration 151
- Accessing the Zones web page 152
- Diagnostics 155
- Element Manager diagnostics 156
- Maintenance 162
- Element Manager maintenance 163
- Suppress alarms 165
- Feature operation 166
- Dialing Plan configuration 167
- On-net dialing plan 168
- Off-net dialing plan 169
- Routing calls 170
- H.323 zones 170
- Zone-based digit manipulation 171
- Calling Line ID composition 172
- Configuring the dialing plan 174
- Dialing plan examples 193
- Figure 62 195
- Figure 63 196
- Figure 64 197
- Figure 65 199
- Figure 66 201
- Figure 67 202
- Figure 68 203
- Figure 69 206
- Normal and Local Mode 206
- Figure 70 207
- Figure 71 209
- Figure 72 212
- Figure 73 214
- Universal Dialing Plan 216
- Figure 74 217
- UDP using location codes 217
- Figure 75 218
- Figure 77 221
- Contents 225
- Testing the ESDN number 238
- Description 241
- Firmware upgrade 242
- Scenarios 245
- List of terms 251
- Survivable Remote Gateway 50 260
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