OWH000201 UMG8900 Hardware Data ---Cascading

1ISSUE 2.2
Upon completion of this course, you will be able to:
Understand the concepts of hardware configuration
Perform the procedures of hardware configuration
HUAWEI TECHNOLOGIES CO., LTD.
Chapter 3 Cascading Relationship
Chapter 4 Configure Clock
Methods for Data Configuration
Execute Man-Machine Language (MML) commands. This is the most common method and is applicable for all data configuration.
Use graphic interface provided by equipment panel for data configuration. This method is mainly applicable for data configuration of hardware (frames and boards). Its advantage is direct viewing and disadvantage is that it is applicable only for part of data configuration.
Execute data configuration scripts. Huawei compiles data configuration into a script file and you only need to execute the script file to complete data configuration.
Hardware and software installation
Before configuration, make sure that equipment powers on and operates normally, and that correct software version is loaded.
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Equipment panel configuration diagram
Providing information about the type, position and number of a cabinet, frame and board
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All rights reserved
This chapter emphasis on procedures for data configuration and methods for data configuration.
Summary
2.2 Configure Boards
Frame Configuration in Cabinets
The Nos. of cabinets start from 0. Frames are numbered according to their locations in a cabinet, from bottom to top. Namely, the three frames from bottom to top in cabinet 0 are numbered 0, 1 and 2 respectively; the three frames from bottom to top in cabinet 1 are numbered 3, 4 and 5 respectively. Frames in other cabinets follow the same numbering order.
Each cabinet can hold three frames at most. If all the TDM interface boards in frames use E1 or T1 interfaces, each cabinet can hold two service frames at most for the convenience of installation and cabling.
The central switching frame and control frame have no TDM service interface. Therefore, the cabinet where the central switching frame or control frame is located can hold three frames, which does not affect the installation and cabling.
The frames in a cabinet are usually placed and numbered from bottom to top. If there is only one frame in a cabinet, the frame shall be placed in the middle of the cabinet for the convenience of monitoring the power distribution system.
The main control frame is configured by default. It manages and maintains the whole UMG8900 while providing services. The main control frame is always numbered 1 and cannot be assigned with any other No.
The configured frame No. must be the same with the No. decided by the DIP switch. Otherwise, loading software and data to the frame will fail.
The main control frame is configured by default and its No. is fixed as “1”. You cannot add or delete it.
If the networking requires an independent central switching frame, its frame No. is 0.
The control frame is needed only for large capacity configuration. Its frame No. is 8.
Reset a frame
The Nos. of cabinets start from 0. Frames are numbered according to their locations in a cabinet, from bottom to top. Namely, the three frames from bottom to top in cabinet 0 are numbered 0, 1 and 2 respectively; the three frames from bottom to top in cabinet 1 are numbered 3, 4 and 5 respectively. Frames in other cabinets follow the same numbering order.
Each cabinet can hold three frames at most. If all the TDM interface boards in frames use E1 or T1 interfaces, each cabinet can hold two service frames at most for the convenience of installation and cabling.
The central switching frame and control frame have no TDM service interface. Therefore, the cabinet where the central switching frame or control frame is located can hold three frames, which does not affect the installation and cabling.
The frames in a cabinet are usually placed and numbered from bottom to top. If there is only one frame in a cabinet, the frame shall be placed in the middle of the cabinet for the convenience of monitoring the power distribution system.
The main control frame is configured by default. It manages and maintains the whole UMG8900 while providing services. The main control frame is always numbered 1 and cannot be assigned with any other No.
The configured frame No. must be the same with the No. decided by the DIP switch. Otherwise, loading software and data to the frame will fail.
The main control frame is configured by default and its No. is fixed as “1”. You cannot add or delete it.
If the networking requires an independent central switching frame, its frame No. is 0.
The control frame is needed only for large capacity configuration. Its frame No. is 8.
2.2 Configure Boards
Limitation on front and back boards :
front board: OMU, MPU, RPU, ASU, FLU, TCU, ECU, SPF and MCMF in the CMU.
back board: NET, CLK, TNU, TCLU, PPU, E8T, E1G, P4L, P1H, A4L, EAC, TAC, BLU, E32, T32, S2L and MCMB in the CMU.
Limitation on opposite positions :
Rules for Configuring Boards
Limitation on fixed positions :
OMU, It is inserted in front slot 7 or 8 in main control frame.
MPU, It is inserted in front slot 7 or 8 of a frame except the main control frame.
NET, It is inserted in back slot 7 or 8.
CLK It is inserted in back slot 0 or 1 in main control frame.
FLU, BLU, It is inserted in a back slot of the central switching
TNU, It is inserted in back slot 6 or 9.
TCLU, It is inserted in back slot 6 or 9 of main control frame or service frame.
Default configuration :
The OMU and NET in the main control frame and the MPU and NET in other frames are configured by default. You do not need to configure these boards and cannot delete them.
Work modes :
1+1 backup :OMU, MPU, NET, CLK, TNU, TCLU, CMU, RPU, ASU, BLU
Load sharing :PPU, E8T, E1G, P4L, P1H, A4L, EAC, TAC, TCU, ECU, SPF, E32, T32, FLU
Load sharing or 1+1 backup :S2L
Limitation on board No. :
All OMU, MPU and CMU boards are numbered uniformly. number for all OMU and MPU boards are generated automatically. The OMU board number is 0. The MPU board in frame 0 is numbered 1. The board numbers for other MPUs are the same with the numbers of the frames where they are located, ranging from 2 to 28. CMU boards are numbered from 31 to 61.
For a board in the 1+1 backup mode, its board type and number must be the same with those of the board in the paired slot. For example, if an FLU board in the 1+1 backup mode is in slot 12, the board in slot 13 must also be FLU and the numbers. of the two boards must be the same.
Limitation on board No. :
Paired slots refers to slots 0 and 1, slots 2 and 3, slots 4 and 5, slots 6 and 9, slots 7 and 8, slots 10 and 11, slots 12 and 13 as well as slot 14 and 15.
You do not need to specify the master board in the two boards working in the 1+1 backup mode. When the system starts up, the master is determined through the contention mechanism. Usually the board that is started first is the master and the other one the slave.
summary
TDM, GE connection is for transferring service data
summary
CLOCK SYSTEM
The UMG8900 clock system provides can provide gateway exchange and local exchange with Stratum-3 or Stratum-2 Clock
The CLK board can extract CLK Source from:
Two-channel 8 kHz line clock
TDM interface boards, PCM
from BITS, Building Integrated Timing Supply System
GPS/GLONASS:
GPSGlobal Positioning System
Manual selection. In manual selection mode,
the CLK board only traces primary reference source specified.
Automatic selection
without SSM control.
SSM
SSM code consist of 4 bit, one multi-frame consist of 8 odd frame and 8 even frame. Each odd frame provide one bit to transfer SSM code and one multi-frame can transfer 2 SSM code. In fact , the first 4 odd frame repeat the first 4 odd frame SSM code.
Priority: PRCTNCLNCSECSTUDUS
SSM Code
GPSGlobal Positioning System
Extract line clock reference source 1 from TDM interface board Connect 8K_OUT interface of TDM interface board (including E32/T32/S2L/P4L/P1H) with 8K-IN1 interface of master and standby CLK board through 8K clock cable (X1 plug of 8K clock cable connects TDM interface board side and X2/X3 plug connects the CLK board side)
Extract line clock reference source 2 from TDM interface board Same as above
Extract external synchronous reference source from BITS equipment Connect 2M_IN interface of the CLK board with clock output interface of BITS equipment through 2M clock cable
Extract reference source from GPS Connect ANT interface of the CLK board with GPS satellite antenna through GPS clock cable (satellite card needs to be inserted in the CLK board)
Clock distribution to frames except main control frame Connect CLK-OUT interface of the CLK board with CLK-IN interface of the NET board through clock distribution cable (CLK0_IN and CLK1_IN interfaces of the NET board correspond the CLK_OUT interfaces of master and standby CLK board respectively; X1 plug of clock distribution cable connects the CLK board side and X2-X7 plugs connect the NET board side)
Clock output Connect 2M_OUT interface of the CLK board with clock input interface of clock receiving equipment through 2M clock cable
End
No
No
No
Yes
Yes
Yes
Start
Before configuring clock, you need to determine the networking mode of clock synchronization. For example, whether the system adopts clock signals from the CLK board or extracts clock signals from reference source. If the system extracts clock signals from reference source, you need to determine the mode of reference source selection and clock output to other equipment. Only after you decide the networking mode of clock synchronization and connect physical cables according to the networking mode, you can start to configure clock.
Under SSM control?
No
No
No
Yes
Yes
Yes
n this stage, you shall configure the priority among the four reference sources of GPS, line clock 1, line clock 2 and external synchronous reference source, the type of external synchronous reference source, whether to force SSM level and SSM level of external synchronous reference source.
DSP CLK/LST CLK
Display/List CLK board configuration information
[Priority of GPS Reference Source], [Priority of External Synchronous], [Priority of Line Clock 1], [Priority of Line Clock 2]: Specify the priority of the four reference sources according to actual mode of clock synchronization networking to serve as the basis of switching between reference resources. The value can be “FIRST (The First Level)”, “SECOND (The Second Level)”, “THIRD (The Third Level)” or “FOURTH (The Fourth Level)”, indicating priority in descending order.
When independent CLK boards are adopted, all of the above reference sources are supported. The sub board of the TNC supports only three except the GPS reference source.
The first level has the highest priority, the second level lower, and the others follow the same principle. Note that the four reference sources must be configured with different priorities.
By default, the above four parameters are set as “The First Level”, ”The Second Level”, “The Third Level” and “The Fourth Level” respectively. That is, the GPS reference source has the highest priority, the external synchronous reference source lower, and the line clock 2 has the lowest priority.
[Type of External Synchronous]: Can be “Ext2MHz (2 MHz)” or “Ext2MBit (2 Mbits/s)”.
[Force SSM Level or Not of External Synchronous]: Indicates whether to force SSM level of external synchronous reference source manually or extract SSM level from E1 time slot. Extracting SSM level is valid only for “2 Mbits/s” external synchronous reference source. When the type of external synchronous source is “2 MHz”, this parameter value can only be “Forcing SSM level”.
[SSM Level of External Synchronous]: Configures the SSM level of external synchronous reference source to serve as the basis of selecting reference source. It is valid only when external synchronous reference source is in “Forcing SSM level” mode. If external synchronous reference source is in “Getting SSM level” mode, the SSM level is extracted from E1 time slot instead of being specified manually.
[SSM Time Slot of External Synchronous]: When external synchronous reference source is “2 Mbits/s” and is in “Extracting SSM level” mode, the system extracts SSM information from E1 time slot. According to ITU-T G.704, the operator can select one of the five bits from Sa4 to Sa8 of time slot 0 in even CRC4 frames for bearer of SSM information. You can configure this parameter according to actual selection of time slot.
DSP CLK/LST CLK
Query external synchronous output clock signals
[Board Type]: Specify the board through which the clock reference source is imported.
[Select Mode of Reference Source]: Indicates whether to select automatically or specify manually the external clock reference source.
Auto: The CLK board selects external clock reference source automatically according to the configured priority. If error occurs in master reference source, the CLK board can select standby reference source according to the priority.
Manual: The CLK board can only select the external reference source specified manually.
[Clock Level]: Needs to be configured only when the independent CLK boards are adopted. It refers to the level of the clock that the CLK board outputs to the frames within this equipment or to other equipment. It can be “Level Two” or “Level Three”.
SET LINECLK
Configure the port from which the CLK board extracts line clock reference source
[Line Clock]: Refers to the line clock type on the CLK board. It can be “LINE1” or “LINE2”.
[Board Type], [Board No.] and [Port No.]: Indicate from which port and from which TDM interface board the CLK board extracts link clock source.
After clock configuration, you can query clock data configuration including phase-lock status by the command DSP CLK. The value of phase-lock status can be:
Free running: Indicates that the CLK board outputs free running clock generated by its crystal.
Fast tracking: Indicates that the CLK board is tracking reference source clock fast and is an instantaneous status usually when the system just connects the reference source.
Locked: Indicates that the CLK board has locked primary reference source and outputs clock signals aligned with reference source.
Holdover: Indicates that the CLK board outputs clock signals based on the locked status when reference source is missing.
summary
Course summary
The course introduces some concepts of hardware data configuration and the procedures, including adding frames, configuring boards and configuring clock.
Hope everybody can make a good fundamental on data configuration with this course.
summary
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OWH000201 UMG8900 Hardware Data ---Cascading

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