DALLAS - NOVEMBER 14, 2009. Summa Technology Group today announced the next phase in its agreement with GS1 GDSN, Inc. to manage the GS1 Global Registry^® and Kato^® Test Data Pool.  The Global Data Synchronization Network (GDSN) is in production with the GS1 Global Registry hosted on SummaTG's managed services network, providing managed services, customer support, and development services for the management of the leading standard for product, location, and price data synchronization.   GDSN-certified Data Pools access the GS1 Global Registry through SummaTG's leading B2B integration infrastructure in support of thousands of leading companies.