Hi DXcomms.
This is not to upgrade the software.
The SCA is a programme (DX System Configuration Advisor) that you load your PABX system file - HRM into. The SCA will then highlight potensial problems on the PABX such as power problems on shelves,DSC concurrent connections,BHCA Busy Hour Call Rate,DCH Common Channel Signalling, etc.
Thank you.
Cheers