Unable to connect to server '%1': %2

Error constant SQLE_OMNI_CONNECT_ERROR
ODBC 2 state ERROR
ODBC 3 state ERROR
Parameter 1 The name of the server that could not be connected to.
Parameter 2 A more specific reason returned from the server class driver.
Severity 16
SQLCODE -656
SQLSTATE WO001
Sybase error code 11206
 Probable cause