[asterisk-users] Asterisk MGCP Centrex Experience/success story

[Nicolas S.]

Hello, 

I have recently a practical with students about Asterisk and MGCP, I m
used to SIP and asterisk concepts, but I d like to know if someone has
some experience or success story about Centrex features with MGCP (as
far I know it s the most used protocol for centrex). 
I' d like to show the students some Centrex features ( I dont know much
of it ). And how a Centrex can differ from a standard PBX 
It s not really a technical help I need but more an approach to show
Asterisk can do Centrex too. 
Any experience would be nice. 

Kind regards. 

Nicolas S.