Serial connection between an QNX 2.15 host and a QNX RTP 6.

I’ve tried without success to use qtalk betwen this to host to download some
QNX 2.15 olds files on my fresh QNX RTP 6.1 platform.
Is it possible to do it, i.e the qcp protocole is it compatible between the
two version ?


Alain Désandré