	national data ndac in pact with signature national data communications inc said it is no longer obligated to issue its majority shareholder signature capital corp mln common shares under a previous agreement national said it entered into a new agreement with signature which would have owned about pct of national s common under the prior pact under the new pact national said it granted signature a five year option to uire two mln shares of its common for an option price equal to its current market value national has about mln shares outstanding reuter 
