Northern Telecom DMS-100 Series Manuals

Manuals and User Guides for Northern Telecom DMS-100 Series. We have 11 Northern Telecom DMS-100 Series manuals available for free PDF download: Maintenance Manual, Manual, Installation And Maintenance Manual, User Manual, General Description, Installation And Maintenance, Maintenance Procedure, Technical Description, Installation, Operation And Maintenance Instructions

Northern Telecom DMS-100 Series Maintenance Manual

Northern Telecom DMS-100 Series Maintenance Manual (236 pages)

Networks

Brand: Northern Telecom | Category: Network Hardware | Size: 0 MB

Table of Contents

Publication History
7
Table of Contents
9
About this Document
13
When to Use this Document
13
How to Check the Version and Issue of this Document
13
References in this Document
14
What Precautionary Messages Mean
14
How Commands, Parameters, and Responses Are Represented
16
Input Prompt (>)
16
Commands and Fixed Parameters
16
Variables
16
Responses
17
Maintenance Overview
19
Operating Description
19
Double Shelf Network Equipment
19
Double Shelf Network Equipment Cards
22
Enhanced Network
24
Enhanced Network Operation
28
Enhanced Network Systems
29
C-Side Extended Messaging
31
Fault Conditions
33
Double Shelf Network Equipment
33
Enhanced Network
37
Automatic Maintenance
40
Double Shelf Network Equipment
40
Error Counters
42
Enhanced Network
44
Quick Reference to Manual Maintenance
45
Preventive Maintenance Methods
47
Description of Routine Maintenance Procedures
47
Network-Related Logs
49
Network Related Operational Measurements
69
Network Related Data Structures
75
Network Related User Interface Commands
77
Double Shelf Network
77
Network Level Menu Commands
78
Menus Related to Double Shelf Network Components
83
Network Crosspoint Commands
83
ALL Command
84
CARD Command
84
Network Accuracy Commands
85
Network Junctor Commands
88
Network Links Command
90
Network Path Commands
92
Enhanced Network
95
Improvements
96
Enhanced Network Level Menu Commands
99
Sublevels of the Enhanced Network
103
System Level
104
System Level Menu Commands
107
Shelf Level
110
Shelf Level Menu Commands
111
Card Level
114
How to Maintain Enhanced Network Crosspoint and Interface Cards
119
Card Level Menu Commands
121
Matrix Level
123
Matrix Level Menu Commands
124
Integrity Level
126
Integrity Level Menu Commands
127
Path Test Level
128
Path Test Level Menu Commands
129
BERT Level
131
BERT Level Menu Commands
132
CLEAR Command
132
Network-Related Card Requirements
135
Problem Isolation and Correction
137
Description of Problem Solving Procedures
137
How to Locate and Clear Faults
137
Fault Isolation Tests
142
Two-Shelf Network Equipment
142
In-Service Tests
143
Out-Of-Service Tests
143
NET Crosspoint Tests
144
NET Link Tests
145
NET Junctor Tests
146
Enhanced Network
146
How to Use Path Tests
146
Diagnostic Tests
152
Double Shelf Network Equipment
152
Integrity Analysis Package
153
Network Error Counters
154
Network Firmware Link Sensitivity Monitor
154
Enhanced Network
154
In-Service Tests
154
Out-Of-Service Tests
155
Matrix Test
156
REX Test
156
Product Specific Test Tools
157
Double Shelf Network Equipment Tools
157
Integrity Check Traffic Simulator (ICTS)
157
Network Fabric
165
Network Integrity Analysis Package
167
Network Path
171
Enhanced Network Tools
177
Enhanced Integrity Check Traffic Simulator
177
About Network Bit Error Rate Tests
179
Enhanced Network Fabric Test Tool
184
Problem Solving Chart
187
Advanced Problem Solving Procedures
191
Advanced Trouble Locating Procedures
191
How to Turn on the Network
191
Two-Shelf Network Equipment
191
Enhanced Network
192
How to Power down the Network
193
Double Shelf Network Equipment
193
Enhanced Network
194
DSNE Net Path Testing
195
Common Procedures
196
Appendix A: Status Fields of ENET Functional Blocks
197
System Status Field
197
Matrix Status Field
197
Blocked Status Indicator
198
Deload Status Indicator
199
Shelf Status Field
199
Appendix B: System Level Status Fields
201
Status Overview Version
201
Memory Use Version
203
Central Processing Unit Use Version
204
Appendix C: Shelf Level Status Fields
205
Status Overview Version
205
Appendix D: Card Level Status Fields
207
Appendix E: Matrix, Integrity, Path Test and BERT Information
213
BERT Level Status Fields
215
Appendix F: DSN Display Codes
217
List of Terms
221
In-Service Test
224
Maintenance Level
226
User Interface
232

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Northern Telecom DMS-100 Series Manual

Northern Telecom DMS-100 Series Manual (168 pages)

Brand: Northern Telecom | Category: Voicemail | Size: 0 MB

Table of Contents

Table of Contents
5
About this Document
11
When to Use this Document
12
How DMS Voicemail Documentation Is Organized
12
References in this Document
12
What Precautionary Messages Mean
13
Regulatory Notices
14
United States Installations
14
Canadian Installations
15
System Redundancy
17
Power
17
Multiserver Processor Node
18
Figure 1-2 MSP Pair
18
Signal Processing Node
19
Telephony Interface Node
20
Figure 1-4 TIFN Pair
20
Disk Drives
21
T1 Spans
22
Simplified Message Desk Interface Links
23
Local Maintenance Console
24
Remote Access
25
Figure 1-9 Direct Dial-Up to an SPM
25
Maintenance Principles
27
Maintenance Model
27
Maintenance Actions and System Events
28
Figure 2-2 Boot Sequence
29
Figure 2-4 Enabling Msps
32
TIFN Maintenance Actions
33
SPN Maintenance Actions
37
System Status and Maintenance Menu
40
Node Status Screen
41
Out-Of-Service Diagnostics
42
Figure 2-26 Basic Alarm Components
64
68K Diagnostics
65
T1 Diagnostics
65
VP12 Diagnostics
66
Bus Controller Diagnostics
66
On-Line Diagnostics
67
Booting the System
69
Booting up Procedures
69
68K Node Loading
70
Booting Problems
71
Multiserver Processor Node
73
Card
73
Bus Controller Card
73
Transition Module
73
Bus Controller Transition Module
73
MSP Configurations
73
Maintenance Exceptions
75
Cannot Complete MSP Switchover
75
Cannot Enable Node
76
Cannot Disable Node
76
Out-Of-Service Diagnostics Fail on 68K Card
77
Out-Of-Service Diagnostics Fail on Bus Controller Card
77
System Response
78
Lost Communication through the Terminal
78
Node Stuck in Faulty State
78
Node Stuck in Loading State
78
Node Oscillating between Inservice/Insvstandby and Outofservice
79
Node Continues to Reboot
79
Node Cannot Boot from Tape
79
Node Recovery
79
Recovering the Entire System
79
Recovering the Insvstandby MSP
79
Signal Processing Node
81
68K Card
81
VP12 Card
81
68K Transition Module
81
Maintenance Exceptions
82
Cannot Enable Node
82
Cannot Enable Card
83
Cannot Disable Card
83
Cannot Enable DSP Channel
84
Out-Of-Service Diagnostics on Card Fail
84
Cannot Disable Node
84
Cannot Disable Card
84
Cannot Disable Channel
85
Channels Do Not Reactivate Properly after a Card Replacement
85
System Response
86
Voice Card/Dsp Port Problems
86
Accidental Removal of the 68K Transition Module
86
Node Stuck in Loading State
86
DSP Port Stuck in Pending State
86
DSP Stuck in Loading State
87
DSP Port Stuck in Out-Of-Service State
87
DSP Port Stuck in Faulty State
87
DSP Port Unconfigured
87
DSP Port Stuck in Noresources State
87
Node Rebooting
87
Noisy Recorded Message or Noisy Session
88
Disk Failure
88
Call Connected but no Voice
88
Incoming Call OK but Not Outcalling
88
Outcalling OK but no Incoming Call
88
Node Recovery
89
Telephony Interface Node
91
Card
91
T1 Card
91
Modem Transition Module
91
T1 Transition Module
91
Maintenance Exceptions
92
Cannot Enable Node
92
Cannot Enable Card
93
Cannot Enable T1 Link
95
Cannot Enable T1 Channel
97
Cannot Enable SMDI Link
98
Out-Of-Service Diagnostics on 68K Card Fail
99
Out-Of-Service Diagnostics on T1 Card Fail
99
Cannot Disable Node
100
Cannot Disable Card
101
Cannot Disable T1 Span
101
Cannot Disable T1 Channel
102
Cannot Disable SMDI Link
102
Symptom Response
103
Node Stuck in Loading State
103
Channel Stuck in Pending State
104
Channel Stuck in Loading State
105
Channel Stuck in Out-Of-Service State
106
Channel Stuck in Faulty State
107
Channel Stuck in Unconfigured State
107
Channel Stuck in No-Resource State
108
Node Rebooting
109
T1 Link Alarms
110
Procedure
110
SMDI Link Alarms
114
Node Recovery
114
Disks and Tape Drives
115
Interpreting Class 66 Disk Managing Seers
115
Class 6602
117
Class 6603
118
Class 6604
119
Class 6605
120
Class 6606
120
Replacing and Resynchronizing Disks
120
Tape Drive Errors
121
Peripherals and Links
123
Local Terminals
123
Multiple Administration Terminals
124
Remote Terminals
125
Local Printers
126
No Printer Output
126
Printer Alarms
126
Backup Printers
127
No Printer Output
127
Printer Alarms
127
SMDI Links
128
Link Bounces up and down Constantly
128
Link Cannot be Brought up
128
If the System Shows an Alarm
129
Link up for a Short Time and then down
131
Link Goes down When Idle
131
DMS SMDI Shutdown Behavior
131
T1 Links
132
All Channels Are Not Working
132
Some Channels Are Not Working
133
Multiple T1 Links Are Not Working
133
Cabinet and I/O Connections
135
Frame Supervisory Panel
135
Input/Output Panel
135
Input/Output Panel Interconnections
135
Input/Output Panel Replacement
137
Input/Output Cabling
139
Input/Output Cable Identification
139
Input/Output Cable Replacement
145
Intracabinet Cabling
145
Input/Output Cable Identification
145
Input/Output Cable Replacement
148
How the Meridian Mail Bus Is Configured
150
Bus Extender Cable Replacement
150
Bus Extender Transition Module Replacement
151
Bus Terminator Transition Module Replacement
151
Primary Shelf Bus Terminator Symptoms
151
Cannot Boot from a Cold Start
151
Nodes Unload While in Service
151
Secondary Shelf Bus Terminator Symptoms
152
Nodes Time-Out Booting
152
Nodes Unload While in Service
152
Other Bus Terminator Symptoms
153
No Seers
153
Local Terminal Lockup
153
Critical Alarm
153
Bus Extender Transition Module Symptoms
154
Nodes Unload on Secondary Shelf
154
Loss of Voice
154
Remote View Bootup Diagnostics
157
Setting up the Modem
157
Dialing into the SPM
157
Modem BIX Tip and Ring Pairs for Msps and Spns
158
Online Recovery
161

Northern Telecom DMS-100 Series Maintenance Manual

Northern Telecom DMS-100 Series Maintenance Manual (238 pages)

Distributed Processing Peripheral, Recovery and Routine

Brand: Northern Telecom | Category: Telephone | Size: 0 MB

Table of Contents

Section 1

5
Section 2

54
- Bad Excidx File
  56
- Bad Logidx File
  56
- Both Disks Full
  59
- Disk Buffer Not Available
  59
- Disk Mode Alarm
  64
- Disk Queue Error
  69
- DISK USE > XX% (W/O 56K Polling)
  70
- DISK USE > XX% PRIMARY DATA (W/ or W/O 56K Polling)
  72
- DISK VS NOT FOUND (W/O 56K Polling)
  73
- Disk: Backup Failed
  78
- Disk: both Disks Contained Preferred Status
  81
- FILE READ FAILED (W/O 56K Polling)
  86
- Format Not Allowed
  87
- INIT NOT ALLOWED (W/O 56K Polling)
  89
- Invalid Addr
  92
- No Disk on Line
  93
- No Disk Parameters
  95
- Partial File Deleted
  97
- Prolonged File Busy Cleared
  98
- SCSI: INTERRUPT from INVALID DEVICE (W/56K Polling)
  99
- SCSI: INTERRUPT WHILE IDLE (W/56K Polling)
  100
- Polling Disks from a Non-Redundant Mode
  164
- DPP Commands - an Overview
  171
- DPP Man-Machine Interface
  171
- The MAP Terminal
  171
- Figure 5-1 DPP MAP Display
  172
- DPP Unit Log Messages
  173
- DPP Unit Messages
  173
- DPP Unit Response Messages
  173
- Short Form Maintenance Commands
  173
- Associating Logs with ERRMAP Messages
  174
- SWACT Processor Changeover
  174
- Active and Standby Processor Command Modes
  175
Section 3

179
- Table
  187
- Cp Fault , Major
  188
- Dsk Error Alarm, Critical
  188
- Disk er Message, Minor
  189
- Disk Mode Alarm, Major
  189
- Dsk Card Hw Err, Major
  189
- Dsk Dpr, que Err, Major
  189
Automatic Message Accounting (Ama) Messages

191
- Bx.25 Inter-Task Comm Error
  192
- Excessive Invalid Blocks
  194
- Excessive Invalid Records
  194
- Invalid Call Record Format
  195
- Strct Code Index out of Range
  198
- Unsupported Strct Code
  199
- Duplicate Blocks Rejected
  200
- Activities to Recover from Polling an Improper AMA Data Block
  202
- Indications that the Problem Has Occurred
  202
- Recovery Procedure
  202
- Collector Demand Poll of Secondary Data
  206
- Copying Tape from Parallel Disk
  206
- Recommended Resolutions
  206
- Other Indicator Lamps
  215
- Routine Maintenance
  215
- Status and Alarm Lamp Maintenance
  215
- System Temperature Sensor(S)
  219
- Cleaning
  220
- Fans
  220
- Fan Replacement
  222

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Northern Telecom DMS-100 Series Installation And Maintenance Manual

Northern Telecom DMS-100 Series Installation And Maintenance Manual (117 pages)

DIGITAL SWITCHING SYSTEMS

Brand: Northern Telecom | Category: Switch | Size: 0 MB

Table of Contents

Table of Contents

3
Desktop Data Unit Options

34
- Aa Ae Af Ag Ah Ak an Ap Ax Az
  35
- Assert Dtr/Normal
  35
- Options
  35
- Assert Rts/Normal
  36
- Delay Cts/Normal
  36
- MI Invert/Normal
  36
- MI Pulse/MI Level
  36
- KBD Enable/Disable
  37
- MI Pulse/MI Level and MI Invert/Normal Settings
  37
- Switch A/Normal
  37
- Switch B/Normal
  37
- Auto Ans/Man Ans
  38
- Auto Orig/Man Orig
  38
- Self-Test/Normal
  38
- Adaptive/Normal
  39
- Buzz Loud/Soft
  39
- Ext Clock/Int Clock
  39
- Far-End Loop/Normal
  39
- Local Loop/Normal
  39
- Autobaud
  40
- Data Speed
  40
- CTS Delay a
  41
- Local CTS Delay
  41
- NT4X25AF /AH Switch Settings for CTS Delay
  41
- Modem Pool du
  42
- Synch Auto Call Bit Oriented
  42
- Synch Auto Call Character Oriented
  42
- Tip & Ring Loop
  42
- Virtual Private Line
  42
- Internal Options (NT4X25AA /AE /AF /AG /AH /AK /AN /AP /AX /AZ)
  43
- Desktop Data Unit Specifications
  44
- Electrical Specifications
  44
- Mechanical Specifications
  44
- Environmental Specifications
  45
- Regulatory Compliance
  45
- NT4X25AD /AV /CH /DF Rackmount du - Front View
  46
- Rackmount Data Unit Description
  46
- Controls and Indicators (NT4X25AD /AV /CH /DF)
  49
Options (Nt4X25Ad /Av /Ch /Df)/Rackmount Data Unit Options

51

Northern Telecom DMS-100 Series Manual

Northern Telecom DMS-100 Series Manual (97 pages)

INTEGRATED SERVICES DIGITAL NETWORK

Brand: Northern Telecom | Category: Control Systems | Size: 0 MB

Table of Contents

Table of Contents
3
Introduction
7
Using this Manual
7
Purpose of the FRSC
7
Software Identification
7
References
8
Overview of the Frsc
9
The LGCI-LCMI Configuration
9
How the FRSC Includes the LGCI-LCMI Configuration
10
The LGCI-LCMI Configuration
10
The Fiber RSC Configuration
12
System Components
13
Host Link Extension (HLE) - NTBX65BA
13
Physical View
13
The HLE Frame
14
Host Link Extension (HLE) Shelf
15
Functional View
16
BX5702 Paddle Card
16
Remote Fiber Line Extension (RFLE) - NTBX65BA
17
Physical View
17
Functional View of the HLE
17
The RFLE Frame
18
Functional View
19
Maintenance Trunk Module (MTM)
19
Ds-1 Transport System
19
Maintenance Trunk Module Shelf for the RFLE
19
Ds-1 Cross-Connect
20
Distribution Frame (DF)
20
Speech Link Connecting Concentrating (SLCC) Frame
20
Equipment for Basic OAM
20
Equipment for Enhanced OAM
20
LGCI (Firmware Changes)
20
Card Locations in LGAI Shelf
22
Network (Firmware Changes)
23
System Configuration
24
Connections for the HLE
24
To the FSP
24
To the SLCC
24
Connections to the FSP of the HLE
24
To the DSX
25
Connections Form the HLE to the SLCC
25
Connections from the HLE to the DSX
25
Connections for the RFLE
26
To the FSP
26
To the MTM
26
To the LGEI
26
Connections to the FSP of the RFLE
26
To the DSX
27
Connections from the RFLE to the LGEI
27
Connections to the Packet Handler
28
Located at the Host
28
Located at the Remote
28
Connections from the RFLE to the DSX
28
Overview of the Basic Oam Interface
29
Maintaining the DS-1 Transport System
29
Maintaining the RFLE and HLE
29
Hex Display
29
Sources of Sync and the Hex Display
29
Codes for Power Up/Self Test and Event/State
30
Test Failure Codes
31
Setting up the Switches at the NTBX5702
32
Setting up a Terminal to Monitor the NTBX56AA
32
Terminal Commands
33
Maintenance Procedures for the Basic Oam
36
Troubleshooting During Power up
36
Usage Notes
36
NTBX56AA Reset Freezes
37
NTBX56AA Fails Power up Diagnostics
37
A DS-1 Link Is Not Established
37
Hex Display Show "2D
38
Hle Rfle
38
Host NTBX56AA Unable to Obtain Sync
39
In Service Maintenance
39
Guidelines for Replacing HLE/RFLE Cards
39
LGCI Fails to Receive WAI after Reset
40
Cannot Communicate with the Remote Terminal
40
Printer Is Babbling
40
Network Links Fail from Insv
41
Hex Display Shows 70-7F (DS-1 Link Is Down)
41
Hex Code Is 2D
41
Routine Testing of the BX56AA
42
Overview of the Enhanced Oam Interface
43
How OAM Capabilities Are Enhanced
43
Monitoring Capabilities
43
Using a Personal Computer Interface
43
System Configuration
43
Maintenance Center
43
Host Site
43
General Hardware Requirements
44
Maintenance Center
44
Host Site
45
How the Enhanced OAM Can be Configured
46
Setting up the Enhanced Oam Interface
47
Installing the Program - Maintenance Center
47
Example Configurations
48
Monitoring One HLE/RFLE Shelf Combination
49
Monitoring Two HLE/RFLE Shelf Combinations
52
Example Configuration for Monitoring One HLE/RFLE Shelf 49 20 Example Configuration for Two HLE/RFLE Shelves
53
Monitoring Three HLE/RFLE Shelf Combinations
56
Example Configuration for Three HLE/RFLE Shelves
57
Operating the Enhanced Oam Interface
61
Datafilling the Specific Configuration
61
Using the Program Status Screen
63
Program Status Screen
64
Status Window (Alarms) for each NTBX56AA
65
Message Window (for Logs and Commands)
67
Status Line (for Available Commands)
68
The Command Menu
68
The Command Menu
69
For Normal Operation
70
The Help Menu Screen
71
Querying the System
72
Troubleshooting
74
Managing Files
75
Troubleshooting (in Depth)
75
Using DOS Commands
77
Additional Commands
78
Provisioning
80
Provisioning Guidelines
80
HLE Frame Provisioning Rules
81
RFLE Frame Provisioning Rules
83
Printer and Personal Computer Interfaces
84
Connecting the NTBX5702 (ISG Compliant)
84
Example Configurations
85
FRSC Link Configuration
86
Example 1
87
Example 2
87
Restrictions/Limitations
88
ESA Capabilities
88
Specifications of the Fiber Transport System
88
Appendix A - Listing of the Install.bat Batch File
89
Listing of the Batch File
89
Command Functions of the Batch File
90
Appendix B - Configuration Forms
91
Overall Configuration Form
91
NTBX56AA Cards One and Two
92
NTBX56AA Cards Three and Four
93
NTBX56AA Cards Five and Six
94
NTBX56AA Cards Seven and Eight
95
NTBX56AA Cards Nine and Ten
96
NTBX56AA Cards 11 and 12
97

Northern Telecom DMS-100 Series User Manual

Northern Telecom DMS-100 Series User Manual (88 pages)

Brand: Northern Telecom | Category: Switch | Size: 0 MB

Table of Contents

Table of Contents
5
About this Document
7
When to Use this Document
7
How to Identify the Software in Your Office
7
Where to Find Information
8
What Precautionary Messages Mean
8
How Commands, Parameters, and Responses Are Represented in Command Descriptions
9
Command Examples
11
DISPCALL Utility
13
DISPCALL Access Level
13
When DISPCALL Is Used
13
Restrictions and Limitations
14
Calculating Node and Terminal Numbers
15
Terminal Identifiers
15
Terminal 0
15
Calculating Terminal Identifiers
15
DISPCALL Level Commands
21
Accessing the DISPCALL Level
21
DISPCALL Commands
22
Help
23
Clear
25
Death
26
Disptid
28
Free
30
Query
31
Quit
32
Savelen
33
Savetid
35
Set
37
Show
39
Figure 3-1 Example of Show Cdb 0 F Command
41
Collecting and Displaying Call Data
43
Recommendations for Operation
43
Collecting Data When a Call dies
44
Collecting Data for a Call Specified by Terminal Identifier
45
Collecting Data for a Call Specified by Line Equipment Number
46
Interpreting DISPCALL Output
49
Log Reports and Swerrs
49
CCB Dump
56
Call Processing Terminal Linkage Block (CPTLB)
56
PORT1PERM and PORT2PERM
60
Call Handler Block (CHB)
64
Call Data Block
77
Call Processing Mailbox (CPMB) Data Area
78
Call Data Block Routing Block (CDBRTEB)
80
PROT Dump
81
UNPROT Dump
81
List of Terms
83

Northern Telecom DMS-100 Series Maintenance Manual

Northern Telecom DMS-100 Series Maintenance Manual (50 pages)

Line Drawer

Brand: Northern Telecom | Category: Telephone System | Size: 0 MB

Table of Contents

Northern Telecom DMS-100 Series General Description, Installation And Maintenance

Northern Telecom DMS-100 Series General Description, Installation And Maintenance (58 pages)

DIGITAL SWITCHING SYSTEMS

Brand: Northern Telecom | Category: Switch | Size: 0 MB

Table of Contents

Northern Telecom DMS-100 Series Technical Description, Installation, Operation And Maintenance Instructions

Northern Telecom DMS-100 Series Technical Description, Installation, Operation And Maintenance Instructions (24 pages)

DIGITAL SWITCHING SYSTEMS

Brand: Northern Telecom | Category: Switch | Size: 0 MB

Table of Contents

Table of Contents
1
Introduction
3
Physical Characteristics
3
Other Documentation
3
Specifications
6
Performance Specifications
6
Environmental and Safety Considerations
6
Line Engineering
7
Powering Requirements
7
Operation and Features
8
Basic Operations
8
Features Description
8
Features Operation
10
Installation Procedures
15
Verification Procedures and Maintenance
19
Verification Test Routines
19
Maintenance
19
Loop Check
19
Polarity Check
19
Station Ringer Test
19
Ordering Information
23
Replacement Parts
23

Northern Telecom DMS-100 Series Maintenance Procedure

Northern Telecom DMS-100 Series Maintenance Procedure (28 pages)

Brand: Northern Telecom | Category: Voicemail | Size: 0 MB

Table of Contents

Table of Contents
5
About this Document
7
Replacement Parts
7
Regulatory Notices
7
Routine Maintenance Procedures
11
Task List
11
Explanatory and Context-Setting Information
11
Summary Flowchart
11
Step-Action Instructions
12
Tape Drive Maintenance
13
Tape Drive Maintenance
14
Cleaning the Tape Drive
15
Figure 1-1 Tape Drive Cleaning
16
Replacing Cooling Fan Filters
19
Replacing the Cooling Fans
23

Northern Telecom DMS-100 Series General Description, Installation And Maintenance

Northern Telecom DMS-100 Series General Description, Installation And Maintenance (22 pages)

DIGITAL SWITCHING SYSTEMS

Brand: Northern Telecom | Category: Switch | Size: 0 MB

Table of Contents

Table of Contents
2
M5009 Basic Operations
8
Description of Features
8
Features Operation
9
Installation Procedures
13
M5009 Business Set
13
Verification Procedures and Maintenance
17
Verification Test Routines
17
Maintenance
17
Loop Check
17
Polarity Check
17
Station Ringer Test
17
Ordering Information
21
Replacement Parts
21

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