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It is not possible to add new PDH boards of newly added Exteneded Subrack due to XC boards in the Main Subrack don't support Exnteded Subrack

Publication Date:  2012-07-25 Views:  50 Downloads:  4
Issue Description
There is an in service NE OSN3500 without extended Subrack. To increase throughput capacity of the Customer needs to add Extended Subrack with additional PQ1
 boards.
After installation operations are made, the Extended Subrack is installed in the cabinet where the Main Subrack is located. The Extended Subrack is powered on 
and the management Ethernet Cable between the Main Subrack and new Extended Subrack is connected. 
After this, when try adding of any PDH board in Extended Subrack using Navigator, an error "NSERR_CFG_BAD_SLOTID" appears. 
In the same time, when query ":cfg-get-phybd" command you can see all boards of the Extended Subrack "BD_NOT_INSTALLED" belong to each new board is appears on active SCC. See file
 "Navigator_log.txt" in the attachment for details.
Alarm Information
NSERR_CFG_BAD_SLOTID, BD_NOT_INSTALLED
Handling Process
1) Replace XC board in the Main Subrack with XC boards support Extended Subrack.
2) Add PDH board of Extended Subrack using Navigator or T2000.
Root Cause
Using of PDH board in Extended Subrack needs presence in Main Subrack of XC boards support Extended Subrack (the XC boards with special connectors on
 front plane). The XC boards that support Extended Subrack are UXCSB and SXCSB currently for OSN3500.
There is a software limitation in logical adding of PDH board of Extended Subrack till XC boards support Extended Subrack will not be added in the Main Subrack
 of an NE. 
There were install ssn1excsa XC boards in the Main Subrack when tryied adding of PDH boards of Extended Subrack.
Suggestions
It is not possible to add PDH board of Extended Subrack till XC boards support Extended Subrack will be installed to the main Subrack.

END