Yeastar S412 PBX

Features and Specifications:-
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 10/100Mbps LAN
1 10/100Mbps WAN
TF Card Slot
Protocol: SIP, IAX2
Transport Protocol: UDP, TCP, TLS, SRTP
DTMF: In-band, RFC4733, SIP INFO
Codec: G711 (alaw/ulaw), G722, G726, G729A, GSM, Speex, ADPCM, iLBC, H263, H263P, H264, MPEG4