Each row in the SYSSUBSCRIPTION system view describes a subscription from one user ID (which must have REMOTE permissions) to one publication. The underlying system table for this view is ISYSSUBSCRIPTION.
The SYSSUBSCRIPTION view is a SQL Anywhere system view. See SQL Anywhere 11.0.1 > SQL Anywhere Server - SQL Reference > System Objects > Views > System views > SYSSUBSCRIPTION system view.