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Nortel DMS-250 Manuals
Manuals and User Guides for Nortel DMS-250. We have
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Nortel DMS-250 manuals available for free PDF download: Reference Manual
Nortel DMS-250 Reference Manual (390 pages)
Digital Switching Systems
Brand:
Nortel
| Category:
Switch
| Size: 1 MB
Table of Contents
Table of Contents
7
About this Document
17
When to Use this Document
17
Intended Audience
17
How this Book Is Organized
17
Intended Audience
19
Applicability of this Document
19
How to Check the Version and Issue of this Document
19
References in this Document
20
What Precautionary Messages Mean
20
How Commands, Parameters, and Responses Are Represented
21
Input Prompt (>)
22
Commands and Fixed Parameters
22
Variables
22
Responses
22
Introduction
23
Primary Rate Interface
23
Q.931 Signaling Protocol
24
Protocol Overview
24
OSI Protocol Layers
24
ISDN Protocol Layers
26
Layer 1 (Physical) Protocol
27
Layer 2 (Link) Protocols
27
Layer 3 (Network) Protocols
28
Layer 4 (Application) Protocols
28
DS-1 Configuration
29
Introduction
29
Hardware Configuration
29
Commissioning
31
Frame Formats
31
Channel Ordering Sequence
33
Line Coding
34
Network Customer Terminating Equipment and Cross-Connect Point
35
Test Equipment Requirements
37
Performance and Maintenance
38
Performance Group Alarms
38
Carrier Group Alarms
38
Alarms
38
Display Fields
39
TRAVER Enhancements
41
Originations on PRA250 Trunks
41
Datafill Trace
42
D-Channel Handler
43
Introduction
43
Hardware Configuration
43
Functionality
43
Installation
44
Loading the D-Channel Handler from the MAP Terminal
45
Returning the D-Channel Handler to Service
45
Checking the D-Channel Handler Load Name
45
Verification
45
Running Internal Continuity Tests
45
Running the Read-Only Memory Tests
45
Running the External Continuity Test
45
Troubleshooting
46
Test Equipment
46
PRI D-Channel Backup
47
Terminology
47
Background
47
Configuration for D-Channel Backup
47
MAP Commands for D-Channel Maintenance
48
D-Channel Back-Up Interactions
48
Message Structure and Function
49
Message Structure
49
Mandatory Information Elements
49
Protocol Discriminator
49
Call Reference
50
Message Type
50
Other Information Elements
50
Bearer Capability
50
Call State
50
Called Party Number
50
Called Party Subaddress
50
Calling Party Number
50
Calling Party Subaddress
51
Cause
51
Change Status
51
Channel Identification
51
Congestion Level
52
Connected Number
52
Display
52
Facility
52
Generic Digits
52
Higher Layer Compatibility
52
Information Request
52
Lower Layer Compatibility
53
More Data
53
Network-Specific Facilities
53
Notification Indicator
54
Original Called Number
54
Progress Indicator
54
Redirecting Number
54
Redirection Number
54
Restart Indicator
55
Transit Network Selection
55
User-To-User
55
Locking Shift to Codesets
55
Message Functions
55
Q.931 Message Descriptions
56
Q.931 Message Information Elements
62
Q.932 Message Descriptions
69
Q.932 Message Information Elements
70
Congestion and Network Flow Control
71
User Congestion
71
Network Flow Control
71
User Congestion and Network Flow Control Interaction
71
Call Control Procedures
73
Introduction
73
DMS-250 Switch Functions and Services
73
Switch Network Parameter
73
Call Establishment at the Originating Exchange
75
User Call Request
75
Call Types Supported
76
Network Control System
76
Call Authorization
76
Call Translation
76
Translation Example
77
B-Channel Allocation and Negotiation
80
Call Proceeding and Termination
81
Call Establishment at the Terminating Exchange
82
Network Call Request with SETUP Message
82
Selection of PRI B-Channel for Termination
82
Terminations and User Responses
83
Terminating to a PRI
83
Termination to a PBX
85
Termination to a Non-ISDN Trunk
85
Termination to Enhanced Voice Services ARU
88
Reseller Switch Setup and Release
94
Suppcode Collection
94
Call Takedown for Normal Call Clearing
96
User-Initiated Normal Call Clearing
96
Network-Initiated Normal Call Clearing
97
Disconnection of an EVS Call
98
Cause and Treatment Handling
101
Standard Cause and Treatment Handling
102
Enhanced Cause and Treatment Handling
103
Q.931 Cause Values
104
Location Codes
104
Mapping of Cause Values to Treatment
105
Mapping of Treatments to Cause Values
107
Exception Conditions
109
B-Channel Glare
110
B-Channel Lockout
112
No Response to SETUP Message
114
No Response after a CALL PROC Message
115
Protocol Violations
115
PRI Interworking
117
Agents
117
Originators
117
Enhanced Digital Recorded Announcements
118
PRI to ISUP
118
PRI-To-ISUP-To-PRI
120
Non-ISUP Trunks
123
PRI-To-PTS
124
PTS to PRI
125
Originating Line Information (OLI)
125
OLI Delivery on PRI Termination
126
Feature Interaction
129
Introduction
129
Integrated Services Access
129
Call Types Supported
130
Invalid Call Types
130
Identifying Call Type
130
PRI Origination and Call Type
131
PTS Origination and Terminating PRI Call Type
133
Call Type Mapping
134
Translation and Routing Options
136
Off Network Dialing
140
On Network Dialing-VNET
142
Public Speed Dialing-DDD/VNET
143
Ten-Digit Routing
143
Test Calls
146
IEC Screening and Routing
146
Restricted Usage by Date and Time
146
Incoming Exclusion
146
Time-Of-Day Routing
147
Trunk Group Class-Of-Service Screening
148
Retranslation
148
Satellite Screening
148
Identifying Voice/Data and Transmission Rate-Bearer Capability
148
Data Calls
149
Data Call Cause Handling
150
Route Advancing
151
Identifying Call Origin-Calling Number Delivery
151
SETUP Message
152
PTS-To-PRI Call
153
SS7 Network Interworking
153
PRISM Service
155
Call Processing
155
Translation and Routing
155
VNET Services
157
Operation Overview
157
Features
157
Call Processing
159
Translation and Routing
160
SAC Service
161
800 And 900 Service
161
Call Authorization
161
Authorization Codes
162
Filed Hotline Numbers
163
Security Codes
163
Calling Line Identification
163
Supplementary/Account Codes
164
Data Call Suppcode/Account Code Collection
164
Overflow Call Control
169
Direct Termination Overflow
169
Enhanced Overflow
169
Enhanced Reorigination
170
Originating Agencies
170
Datafill in TRKGRP
170
Network Call Transfer
171
User-To-User Service
171
Call-Associated UUI Signaling
172
Message-Associated UUI Signaling
174
Datafill
176
Call Tracing and Billing-NCID
176
NCID Generation
177
NCID Acceptance and Delivery on PRI
177
Evs Pri
177
Passing the NCID
178
NCID Screening
178
Enhanced Voice System Audio Response Unit
178
Virtual Trunk Elimination
180
Rlt/Atp
180
Fraud Call Interrupt
182
Interactions
184
Datafill
185
Dialable Wideband Service
187
Introduction
187
Hardware Requirements
187
Trunk Types
188
Translating and Routing
189
Route Selectors
189
Constraints
190
Protocol Datafill
190
Signaling
191
ISDN SETUP Message
191
Selecting a Route
193
Channel Selection Grouping
193
Channel Selection Sequence
194
Channel Availability Selection
195
Datafill for Channel Selection
196
Datafill Values
197
Potential Routing Problems
197
Fragmentation
198
Glare
198
Datafill and Subscription Parameters
201
Parameter Groups
201
Parameter Relationships
201
Facility-Related Interface Parameters
202
Service-Related Interface Parameters
203
Database Correlation
203
Configuration Data Correlation
203
Layer 1 Data Correlation
203
Layer 2 Data Correlation
204
Layer 3 Facility Data Correlation
205
Layer 3 Service Data Correlation
206
Datafill Tables
206
ITA Configuration
211
PRI Service-Related Tables
216
CI Command-DISPDCH
219
Service Verification
221
Call Setup Service over PRI
221
Putting PRI-Related Facilities into Service
221
TL100 Tests over PRI Trunks
221
T100 Test
222
TL102 Tests over PRI
223
Call over a PRI
224
Verify Data Connectivity
224
Customer Questionnaires
224
PBX Telecom Manager Trouble Report Form
224
PBX End-User Trouble Report Form
227
Verification of PRI Facility on the DMS-250 Switch
228
PRI Datafill Verification
228
Interpreting PRI Trunk States on the DMS-250 Switch
228
Interpreting Carrier States on the DMS-250 Switch
230
Interpreting PRI DTCI States
232
Interpreting DCH States
233
Engineering Recommendations
235
PRI Configurations
235
Single DS-1 Per PRI
235
Single PRI Per
235
Usage of Non-PRI Channels on
235
D-Channel Handler to DS-1 Mapping
235
Recommended D-Channel Handler to DS-1 Mapping on DMS-250 DTCI
235
Optimal DS-1/D-Channel Handler Card Assignments on DMS-250 DTCI
236
Signaling Terminals
236
DTCI Port Allocation
236
DS-1 Card Locations
236
Reliability Considerations
237
Backup Trunk Group
237
Non-PRI Trunks as Backup
237
Multiple PRI Links
237
DMS-250 Switch Loss and Level Datafill
237
DS-1 to DS-30 Channel Mapping
239
Etsi Pri
243
Introduction
243
Protocol-Network Mode
243
Protocol-User Mode
244
Parameters
245
Message Formats
246
Protocol Timers
246
Hardware Configuration
246
Dtcoi+ Overview
246
D-Channel Handler
247
Interworking
247
Call Processing for ETSI PRI Originations
247
Identifying Call Type
248
Pretranslation Name Determination
248
OTG and OSID
248
B-Channel Negotiation
250
Charge Number/Calling Party Number Delivery
250
Ansi Pri
253
Standard Cause and Treatment Handling
255
Remote Access
259
Supplementary/Account Codes
259
In-Band Digit Collection-Answer Supervision
260
Variable Length Private Dialing
260
Direct Termination Overflow
260
Enhanced Overflow
261
Registered Access Calls
262
Global Flexible SAC
262
PRISM Services
263
Universal Translation
263
Long Call Disconnect
264
Non-Standard Routing
264
Class of Service Screening
264
Test Calls/Automatic Trunk Routing
264
Trunk Group Class-Of-Service Screening
264
Data Calls
264
In-Switch Account Code Collection
265
User-To-User Information Services
265
Ncid
265
Dialable Wideband Service
265
EIR on ETSI PRI
265
Flexcard on ETSI PRI
265
Flexcard Call Processing
266
Flexible Card Type
267
Pretranslator Per Access Number
267
Flexible Dialing Stage
268
Selectable Prompts
268
Variable Number of Card Digits
269
Reorigination
270
Routing
271
Card Service Response
271
Routing and Failure Responses
271
Enhanced Overflow
272
ETSI PRI Terminations by Way of Table OPRTEID
273
Ncauui
275
NCAUUI (Non Call Associated User-To-User Information)
275
Non Call Associated User to User Signaling Invocation
276
NCAUUI Invocation Acknowledgement
276
NCAUUI Invocation Rejection
278
Network Rejection
279
Network Flow Control
282
User Congestion and Network Flow Control Interaction
283
NCAUUI TSC Clearing
285
Data Access Point (DAP)
286
NCAUUI (Two Switch Scenario)
291
Overview
291
Feature Description
291
Connect Timers
295
NCAUUI Invocation Negative Acknowledgment
297
NCAUUI Congestion and Flow Controls
305
PRI Connected Number Transport
319
PRI Progress Indicator Transport
321
17-2 Pri Progress Indicator Transport
322
Processing Scenarios for Backward Call Indicators
324
Scenario 1: PRI-To-ISUP-To-PRI
324
Scenario 2: PRI to ISUP to PTS
325
Scenario 3: PTS to ISUP to PRI
325
Scenario 4: PRI-To-ISUP-To-PRI
326
Scenario 5: PRI-To-ISUP-To-PRI
327
Scenario 6: PRI-To-ISUP-To-ISUP
328
Migration Strategy
329
Feature Impact
329
MAUUI over Release Message for NCAUUI
331
Feature Description
331
MAUUI TSC Clearing for NCAUUI
331
Single Switch Scenario
331
Two Switch Scenario
335
MAUUI in First Call Clearing Message before Connect
343
Feature Synopsis
343
Functional Overview
343
Feature Description
344
PRI-PRI Scenarios
345
ISUP-ISUP Scenarios
349
PRI-ISUP/ISUP-PRI Interworking Scenarios
351
Network Scenarios
357
Special Cases
359
Etsi Pri
363
Billing
364
List of Terms
367
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Nortel DMS-250 Reference Manual (86 pages)
Alarm System Description
Brand:
Nortel
| Category:
Security System
| Size: 0 MB
Table of Contents
Table of Contents
7
About this Document
11
How to Check the Version and Issue of this Document
11
References in this Document
11
What Precautionary Messages Mean
12
How Commands, Parameters, and Responses Are Represented
13
Input Prompt (>)
13
Commands and Fixed Parameters
13
Variables
13
Responses
13
Introduction
15
Office Alarm System
16
Office Alarm System Versions
16
Office Alarm Unit
16
Alarm Detection
17
Alarm Indication
19
Alarm Classes
20
Office Alarm System Version 1
23
Version 1 OAS Hardware and Alarm Indication Devices
23
Office Alarm Unit
23
MTM Alarm System Circuits
26
Alarm Crosspoint Field Shelf
26
External Alarms Panels
28
Alarms
28
Office Alarm Unit
28
Office Alarm System Version 2
29
Version 2 OAS Hardware and Alarm Indication Devices
29
Office Alarm Unit
29
MTM Alarm System Circuits
31
Alarm Cross-Connect Unit Panel
31
Alarm Control and Display Panel
31
External Alarms Panels
34
Alarms
34
Office Alarm Unit (OAU)
34
Version 2 OAS Equipment Combinations
35
OAS Version 2 Enhanced Alarm System
37
EAS Features
37
EAS Hardware and Alarm Indication Devices
38
Office Alarm Unit
38
MTM Alarm System Circuits
40
Alarm Cross-Connect Unit Panel
40
Audible Alarms
40
Visual Alarm Indications and Manual Controls
41
ACD Panel with Common Audible Alarm
42
Alarm Display Panel
43
Exit Alarm Panel
44
Equipment Aisle Visual Alarms
45
Alarm Extension Circuits
45
Power Distribution Frame Upgrades
46
Office Alarm System Features
46
Low Power Alarm System
49
Office Alarm System
49
Low Power Alarm System
50
Low Power Alarm System Features
50
Low Power Alarm System Components
51
Alarm and Control Circuits
59
Alarms
59
Office Alarm Unit Alarms
59
Dead System Alarm (DSA)
59
FSP/MSP Alarms
63
Power Distribution Center (PDC) Alarms
64
Low Voltage and Power Loss Alarm Circuits
64
Low Battery Voltage Detection Circuit
64
Low Power Alarm System
65
A and B Feed Loss Detection Circuit
66
Remote Alarm Contacts
66
Audible Alarm Reset
66
Trunk Test Center (TTC) Alarms
67
Test Line Alarm
67
Trunk Group Alarm
67
Trunk Test Center Night Alarm Transfer
68
Remote Alarm Transfer
68
Dead System Alarm Sending
69
Alarm Grouping
69
Alarm Power Supplies
70
OAS Version 1
70
Loop Closure
71
Local Talk Line Circuit
71
OAS Version 1
72
Data Loop System
72
Alarm Sending and Checking System
73
Remote Site Alarms
75
RLM Alarm Extension Circuit
75
Centralized Alarm Reporting
76
List of Acronyms
77
Abs
77
Acd
77
Ani
77
Ascs
77
Cama
77
Ccis
77
Dms
77
Doc
77
Dsa
77
Eas
78
Ext
78
Fsp
78
Ioc
78
Ipm
78
Ism
78
Lpa
78
Map
78
Mdf
78
Mtm
78
Rlm
79
Stp
79
Tops
79
Ttc
79
Ttp
79
Vdu
79
Index
81
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