Yeastar S412 PBX for Small Business

8 VoIP Users

8 Concurrent Calls

4 VoIP Trunks

8 Fixed RJ11 FXS Ports

4 Customizable FXS RJ11 Ports

Up to 4 Customizable FXO/BRI RJ11 Ports

Up to 2 Customizable GSM/3G/4G Channels

1 × 10/100 Mbps LAN

1 × 10/100 Mbps WAN

TF Card Slot

Protocols: SIP, IAX2

Transport Protocols: UDP, TCP, TLS, SRTP

DTMF: In-band, RFC4733, SIP INFO

Supported Codecs: G711 (alaw/ulaw), G722, G726, G729A, GSM, Speex, ADPCM, iLBC, H263, H263P, H264, MPEG4