Integrate SAP CRM 7.0 with custom CTI

Hi all,

my scenario is the following.

the contact center of my client uses CRM 7.0 and in particular the IC Web UI for the front office.

For different reason, the client want a custom CTI  toolbar. let me say, he wants buttons "Answer", "Hang UP", etc. in an external application (non-sap).

Now we have to provide, and before understand, the interface architecture and specification to achive this.

I read the ICI specification, but I still don't understand where are these web service and/or soap message? How can I access then? How can I simulate one of this soap request?

thanks

enzo