Camel protocol

This is a short description about what I know about Camel, the intelligent network protocol.
I learn this protocol by working. I've never received a real formation about that.

• CAMEL in OSI stack

CAMEL	gives information about a call
TCAP	controls the session (usually one call)
SCCP	gives the messae to the correct program with SSN number
MTP3	(belongs to SS7) sends message to the correct machine using a Point Code or a Global Title
MTP2	(belongs to SS7) sends the message to the next platform
MTP1	(belongs to SS7) sends the message in the correct channel

• Intelligent Network Equipment
  

Usually you can find in a Intelligent Network this kind of equipment :

SSP : Phone switch
SCP : Intelligent Network service platform
STP : Translate the Global Title to a point code

1. Message

Camel message are encapsulated into TCAP session message (TC-BEGIN, TC-CONTINUE, TC-END)
You receive information about a call into a Request Bcsm Event :
- InitialDetectionPoint
- O-Busy
- T-Busy