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Chapter 2. 9500 MXC Terminals
Vol. II-2-30
Alcatel-Lucent
Next:
• IDU Protection Switch Conditions and Criteria
• IDU Service Restoration Times
IDU Protection Switch Conditions and Criteria
Tx and Rx are switched separately except for a Tx online switch event where the
Rx Online function will follow the Tx to put Tx Online and Rx Online on the
same IDU. This occurs
providing there is no blocking condition to prevent an RX
online switch
1
.
The primary-designated IDU is default online for Tx and Rx
2
.
• Online for Tx means that it is transmitting.
• Online for Rx means that it is controlling the Rx protection switch function and
is sending Rx data to the trib ports.
The protection cable must be correctly installed between protected IDUs for
protection to operate.
Data is provided for:
• Switching Guard Times
• Switch Conditions: IDU 20x and IDU 155o
• Tx Switch Criteria
• Rx Switch Criteria: IDU 20x and IDU 155o
Switching Guard Times
To prevent protection switch oscillation a
switch oscillation guard time
mechanism applies to all forms of
online
protection switching
3
. The mechanism
is described below.
• A period of guard time begins immediately after each protection switch occurs.
• No protection switches are permitted during the guard time. Protection
switching may resume once the guard time has elapsed.
• To damp possible oscillations in the system the guard time is regularly adjusted,
using the following rules:
• The guard time doubles after each switch (up to the maximum)
1
An Rx blocking condition will occur if there is an Rx path alarm on the partner IDU or if the current IDU
is locked online for Rx.
2
Except for IDU 20x when operated in the Hot-standby: Non-protected Tributary mode. In this mode both
IDUs are online to receive data from its directly-connected ODU.
3
It does not apply to Rx diversity-bus (hitless) path switching.
Содержание 9500 MXC
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Страница 29: ...Volume I 9500 MXC Health and Safety Requirements...
Страница 30: ......
Страница 39: ...Volume II 9500 MXC System Description...
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Страница 56: ...Chapter 1 9500 MXC System Overview Vol II 1 16 Alcatel Lucent...
Страница 94: ...Chapter 2 9500 MXC Terminals Vol II 2 38 Alcatel Lucent...
Страница 218: ...Chapter 4 Outdoor Units Vol II 4 4 Alcatel Lucent...
Страница 236: ...Chapter 6 9500 MXC Performance and Diagnostic Features Vol II 6 14 Alcatel Lucent...
Страница 237: ...Volume III 9500 MXC Installation...
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Страница 268: ...Chapter 2 Outdoor Installations Vol III 2 26 Alcatel Lucent Figure 2 16 BGXZ Surge Suppressor...
Страница 282: ...Chapter 2 Outdoor Installations Vol III 2 40 Alcatel Lucent...
Страница 300: ...Chapter 4 Installing the IDU Vol III 4 6 Alcatel Lucent...
Страница 321: ...Volume IV 9500 MXC CT...
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Страница 326: ...Chapter 1 9500 MXC CT Introduction Vol IV 1 4 Alcatel Lucent Figure 1 3 Standardized 9500 MXC Logos...
Страница 332: ...Chapter 1 9500 MXC CT Introduction Vol IV 1 10 Alcatel Lucent...
Страница 362: ...Chapter 2 Setting Up 9500 MXC CT Vol IV 2 30 Alcatel Lucent...
Страница 368: ...Chapter 3 Installation and Configuration Process Vol IV 3 6 Alcatel Lucent Figure 3 1 9500 MXC CT Menu Bar Menus...
Страница 374: ...Chapter 3 Installation and Configuration Process Vol IV 3 12 Alcatel Lucent...
Страница 384: ...Chapter 4 Licensing Vol IV 4 10 Alcatel Lucent...
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Страница 508: ...Chapter 8 Protection Vol IV 8 26 Alcatel Lucent...
Страница 542: ...Chapter 10 Networking Configuration Vol IV 10 18 Alcatel Lucent...
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Страница 550: ...Chapter 12 Date and Time Configuration Vol IV 12 4 Alcatel Lucent...
Страница 558: ...Chapter 13 Software Management Vol IV 13 8 Alcatel Lucent...
Страница 561: ...9500 MXC User Manual 3DB 23063 ADAA Rev 004 July 2007 Vol IV 14 3 Figure 14 2 Login Screen for Admin...
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Страница 632: ...Chapter 15 Diagnostics Vol IV 15 70 Alcatel Lucent Figure 15 27 Example Parts Screen...
Страница 636: ...Chapter 15 Diagnostics Vol IV 15 74 Alcatel Lucent...
Страница 637: ...Volume V Commissioning and Troubleshooting...
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Страница 688: ...Chapter 2 9500 MXC Troubleshooting Vol V 2 32 Alcatel Lucent Terminal FAN Alarm Hierarchy FAN Hardware Fan Failure FAN...
Страница 699: ...Volume VI Appendices...
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Страница 706: ...Vol VI A 6 Alcatel Lucent Figure A 2 Excerpt from a Circuit Allocation Sheet for the Example Ring in Figure A 1...
Страница 791: ...9500 MXC User Manual 3DB 23063 ADAA Rev 004 July 2007 Vol VI B 65...
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Страница 836: ...Vol VI D 10 Alcatel Lucent Figure D 3 Static Routing Screen for Node B in Figure D 2 3 192 168 2 1 Lyons Dpt...
Страница 846: ...Vol VI D 20 Alcatel Lucent...
Страница 856: ...Vol VI E 10 Alcatel Lucent...
Страница 873: ...9500 MXC User Manual 3DB 23063 ADAA Rev 004 July 2007 Vol VI F 17...
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