Sell 4 Fxs Ports VoIP Gateway / VoIP Ata / VoIP Adapter

Features & Benefits

 Full Feature Voice / Fax-over-IPl
 Ultra-compact andl lightweight
 Universal plug and diall
 Extremely costl affordable

Technical Details
Model: SPE 4.2 pro
Ports: Power, 2 (RJ45) for Ethernet port and RJ11 for Phone ports
Phones Ports: 4 FXS ports and 2 FXO ports
Standards: SIP (RFC 3261~3266 and various SIP draft extensions), SDP (RFC2327), RTP/RTCP (RFC 3550, 3551)
Voice Codec: G.711 u-law, G.711 a-law, G.729, G.729 a/b
Fax Codec: G.711 pass-through, T.38
IP Assignment: Static IP, DHCP, PPPoE
Call Features: Call transfer (attended), Call forward (busy / no answer / unconditional), Call hold / retrieve, Call waiting, Caller ID display, Caller ID blocking, Anonymous call blocking, Hook flash
Security: HTTP 1.1 basic/digest, Authentication for Web setup, MD5 for SIP authentication (RFC2069 / RFC2617)
Voice Quality: VAD, CNG, AEC, AGC, Packet loss concealment, each line G.169 up to 128ms, Dynamic jitter buffer, Bell 202 and V.23 caller ID
Tone: DTMF, Ring Tone, Ring back tone (local and remote), Dial tone, Busy tone, MWI