If anyone is a FIF member, I think accessing these documents may give some insight:
Current Documents (FIF members please log in to access documents)
FIF Options Symbology (OSI) Survey [Posted: 2008-08-04] The FIF OSI Survey is intended to determine where firms are with respect to options identifiers and OSI implementation.
OSI Initiative Tracking Document [Posted: 2008-08-01] Updated OSI Initiative Tracking Document with Relevant Links and Implementation Milestones