FXS Gateway TA800 Yeastar TA800 features 8 FXS ports for analog phones and is designed to meet various demands of IP applications. The powerful features and robust performance simplify the integration of legacy phone system and IP-based system. High Performance TA800 is a stand-alone FXS VoIP gateway with carrier-grade features and reliability. *8 FXS ports, *Fully compliant with SIP and IAX2, *Flexible calling rules, *Superb voice compression with industry standard codecs, *Line echo cancellation for 8, 16, 32, 64 or 128 ms echo delays, *Tested and certified with Elastix, BroadSoft, and others