2.5.6. General Comments on Loading 
Download speed
It takes approximately 8.5 minutes to load a CGW-STMI board (excluding
miscellaneous restore times). More time is needed in the case of an access
point with a slow IP connection (see also "Flow control (TCP)").
Flow control (TCP)
The system performs flow control. If the necessary bandwidth (quality
of service) is not available, the process slows down, that is, the speed
is dictated by the slowest access point when loading all access points
simultaneously.