This Note is a few months old now but can't see it mentioned here at SCN...
Good info on TM/EM connectivity.
Some settings described in the documents do not comply with the current release.
Change History and Updates for the document - please implement the changes as described.
SAP TM 9.1 SP00 and higher with SAP Event Management 9.0 SP04 and higher - latest release v4.21 June 2014 (see attached PDF).
Guides for previous releases are available from Solution Manager.