Aug 11 (Reuters) - Etherstack PLC ESK.AX:
US SUBSIDIARY ENTERED INTO A MASTER SUPPLY AGREEMENT WITH AT&T SERVICES INC
DEAL FOR PROVISION OF CO'S TELECOMMUNICATIONS SOLUTIONS AND SERVICES RELATED TO MISSION CRITICAL PUSH-TO-TALK TECHNOLOGIES, OTHERS
EXPECTS CONTRACT TO CONTRIBUTE $4 MILLION TO CURRENT YEAR'S REVENUES
CO TO GET AT LEAST US$2.5 MILLION PER ANNUM IN SUPPORT & SERVICE FEE OVER 7 YEARS UNDER DEAL