Have you tried hcitcptest utility? That might help you find out what they are sending you. You could also turn up the EO.
However, you need to know what length encoding mechanism the sending system is employing (if any). Once you know that, then you can configure Cloverleaf appropriately.
Jim Kosloskey
email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.