FM/Methods triggering when Logical link is called

Hi Gurus,

Could any one explain the functionality of logical link type .we have few logical link types LAUNCH TRANSACTION,WORK CENTER and TYPE.

my problem is that we have created a Logical link ZINVOCE to view the invoices from CRM Web UI which are created in Backend billing system(ECC).

We have selected logical link type - TYPE

Target ID : BSP-DLC-FS

Parameter :ISU_BICONS_FS

Parameter class : CL_CRM_IU_FS_NAVBAR_PARAM

I want to know which FM/Methods system is triggering when this particular logical link is called.

Please let me know if few more details are required.

Regards,

Ravi