Yeastar WCDMA S-Series IP PBX Expansion Module
Free!
Scalable and Modular S-Series VoIP PBX
Yeastar S-Series VoIP PBX provides flexible telephony interfaces combination while allowing for future scalability with unique modular design. Besides the built-in rich SIP capabilities, S-Series lets you decide what types of extensions and physical trunks you need in your telephone system. When your business grows, adding more users and concurrent calls is also possible with S-Series.
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