Yeastar EX30 Expansion Board w/ E1/T1/PRI Port for S100 and S300 True-Tech 

EX30 Yeastar Expansion Board adds one T1/E1/PRI port to a Yeastar S100 or S300 IP-PBX. When you need to connect your VoIP phone system to a digital phone system.

Designed with the small and medium-sized enterprises in mind, supporting up to 500 users and built using the very latest technology, the Yeastar S-Series delivers exceptional cost savings, and productivity and efficiency improvements to small and medium-sized businesses, delivering power, performance, quality,and peace of mind.

Yeastar EX30 E1 is specifically designed for improving the power and flexibility of Yeastar series IP PBX systems (S100 and S300). EX30 expansion board supports 1 E1/T1/PRI ports and this can be used in conjunction with the S100 and S300 IP PBX systems for the expansion facilities. It can increase the number of SIP users and concurrent calls as your business grows.