With Yeastar S-Series, all the telephony interfaces are modular and customizable, S300 allow 3 Expansion Boards and Telephony Modules to add telephony interfaces.
S50 is a compact and full-featured IP-PBX that comes in a 19’’ 1U rack-mountable chassis. The advanced module-based S50 is capable of supporting ISDN BRI, PSTN, and GSM connectivity, providing VoIP communications for up to 50 users.
Rich functionalities
A robust feature set that fulfils your various needs
Easy management
Easy-to-navigate GUI. Programmable TE/NT modes for easy integration
Cost-effective
Cost savings on phone calls via VoIP
Excellent interoperability
ISDN compliant and proven interoperability