Home / Yeastar EX30-CARD – Yeastar Expansion Board with E1/T1/PRI Port for S100 & S300 YeastarYeastar EX30-CARD – Yeastar Expansion Board with E1/T1/PRI Port for S100 & S300 Yeastar Description DescriptionShareTweetPinShare0 Shares $650.00 Buy now newegg.comDescriptionYeastar EX30-CARD - Yeastar Expansion Board with E1/T1/PRI Port for S100 & S300ShareTweetPinShare0 Shares