X.25 protocol in QNX 6.3 (CorLink Software)

As I know, CorLink Software of Gandacar Consulting Limited (http://www.gandacar.ca/x25_products.html) is the only way to communicate in QNX with X.25 protocol. On Gandacar’s site there is written: The Gateway package supports the S90, S91, S91 V2, and S94 Eicon Cards. Does it mean that Eicon Card is indispensable for CorLink Software?

I sent this question to Gandacar Application Software Specialists, but I haven’t got answer until now.

Is there any other software to communicate with X.25 protocol in QNX 6.3?