which parameters required for XBEE PRO900 to communicate with 900HP

I bought a pair of XBEE PRO900 (Digi Part #: XBP09-DPSIT-156) and they worked well together. I wanted to try a network, and according to Digi, that model is superceded by the XBEE900HP. So I got some of them( XBee PRO 3B-DPST_001) and they communicated with each other.
Now I would like to have communications between the PRO900’s and the 900HP’s but I am not having any luck. Asside from having the same network ID, what parameters must be set to achieve compatablity?

Nothing They are different products running at different data rates and over different frequencies. They simply will not talk to each other.

mvut, Thank you, That puts an end to that.