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Performance considerations

The solution was tested under ideal conditions: in a clean lab environment where 
NDS
 was used only to serve Blast and the network topology was simple. The following performance statistics were recorded:
Number of phones
Time until 75% of the phones start playing the message
1000
6 seconds
5000
10 seconds
10000
15 seconds
Based on this data, then, in an environment with 1000 phones, at least 750 phones (75%) will start playing the audio alert and displaying the alert text on screen within at most 6 seconds. In an environment with 5000 phones, at least 3750 (75%) will start playing the audio alert and displaying the alert text within at most 10 seconds. And in an environment with 10,000 phones, 7500 of them will start playing the audio and displaying the text within at most 15 seconds.
Results might vary due to factors such as network usage and CPU usage of 
NDS
 for other tasks or plug-ins, so the performance statistics listed above should be viewed as guidelines, not as guarantees.