FEATURES:
Connections: 4x RJ11 FXS Ports Switch Port: 1x 10/100Base-T Ethernet Port Echo Cancellation: yes Management: via web UI QoS: supported Protocol Support: SIP, IAX2 Audio Codecs: G.711 (alaw/ulaw), G.722, G.723, G.726, G.729A, GSM, ADPCM Transport :UDP, TCP, TLS, SRTP Fax : T.38 and...