RTMFP LIMITS ON ADOBE MEDIA SERVER 5 EXETNDED ????

hi everybody first of all i'd like to apologize for my english . it's not perfect because i'm still learning .thanks in advance.

well i have a question and until today i didn't find an exact answer even with google and in forums.

in the adobe media server comparison  ( http://www.adobe.com/products/adobe-media-server-family/buying-guide-comparison.html )  it is said that adobe media server 5 extended has a limit of 15000 RTMFP P2P INTRODUCTIONS.

i'm not able to figure out what does that mean ?????????  

* does it mean that only 15000 users can connect to adobe media server via  rtmfp and after they can connect each other  ? or

  * does it mean that only 7500 couple of 2 users can be connected   ?

i'd like to know exactly what this limit stands for ??????????

me and some friends are making  a real time chat with webcam and audio and we plan to buy adobe media server 5 extended even tough the price is expensive !!!!!!!!!! that's why we want to know to take this limit in consideration.

wa made some tests but just with adobe starter and it works great.

thank you .