Issue 2134 in mobicents: Fix SPI for endpoint factory and add documentation

[mobicents]

Status: Accepted
Owner: baranowb
CC: amit.bhayani,  oleg.kulikoff
Labels: Type-Enhancement Priority-Medium Component-Media-Server  
version-2.1.0 Release-Type-Beta-2 Roadmap-Fix

New issue 2134 by baranowb: Fix SPI for endpoint factory and add  
documentation
http://code.google.com/p/mobicents/issues/detail?id=2134

As above.