There are separate requirements at the client and server for using Sybase IQ as an Open Server.
See SQL Anywhere 11.0.1 > SQL Anywhere Server - Database Administration > Replication > Using SQL Anywhere as an Open Server > Setting up SQL Anywhere as an Open Server > System requirements.
To connect to Sybase IQ 12 or later, use server classes asaodbc and sajdbc.
To connect to Sybase IQ 11.x, use server class asiq.