The NYSE will decommission the Common Message Switch (CMS) as of December 31, 2008. It is important that your firm begin the conversion process from CMS to the Common Customer Gateway (CCG) as soon as possible. In addition, the NYSE will not accept requests for new CMS sessions after October 3, 2008.
NYSE Trading Technology Memo
NYSE Fix Specification & User Guide Version 3.5.1
Category: Operations, Traders