wappush on CDMA, source port and destination port

Hi List...

I need to do a wap push on CDMA, using a smpp conexion.

I'm using UDH and SI, but it didn't work.  The provider (Logica) said me
that i have to send 2 optional parameter: source_port and destination_port.
Kannel send these parameters with default value.

Is any way to send these parameters in the smpp message? It's necessary send
them to do a wappush in CDMA?

Thanks in advance!!!

Mario