Excellent! analog 4FXS and 4FXO ports VOIP gateway access adapter with T.38 power failure Bypass

4 ports fxo and 4 FXS voip gateway is a versatile IP-based voice and fax gateway. It is highly integrated router, NAT, phone gateway functionality and has market-leading voice quality, rich functionality, and lightweight, compact design.  8 ports fxo voip gateway is fully compatible with SIP industry standard, can be achieved with many other SIP compliant devices and software interoperability. In addition, it supports including G.723.1, PCMA/U and G.729AB voice codec. Suitable for carrier and enterprise VoIP call center agents.
 
Large port access gateway
 Standard SIP protocols
 Standard G.723.1,G.729A/B,PCM A/U code
 Call forwarding, Call hold, Caller ID, DND  standard voice service
 Anonymous call, Direct IP Call and Busy tone
 Fax over IP  and Three –way conferences
 
Physical Interface
•Phone ports: 1/2/4/8/16/24/32/48/72/96/112FXS or FXO, RJ-11.   It is ok to mix FXS and FXO ports.
•Ethernet Interfaces:
8FXO/FXS: 3*RJ-45 10/100Mbps, RJ-45
 
Protocol
•SIP V2.0(RFC 3261,3262,3264)
•SDP (RFC 2327)
•REFER (RFC 3515)
•RTP/RTCP (RFC 1889,1890)
•STUN (RFC 3489)
•ARP/RARP (RFC 826/903)
•SNTP (RFC 2030)
•DHCP/PPPoE
•TFTP/HTTP/HTTPS
•DNS/DNS SRV (RFC 1706/RFC 2782)
•VLAN 802.1P/802.1Q
 
Voice & FAX
•G.711A/U law, G.723.1, G.729A/B
•Comfort Noise Generation(CNG)
•Voice Activity Detection(VAD)
•Echo Cancellation(G.168)
•Adaptive (Dynamic) Jitter Buffer
•Hook flash test
•Programmable Gain Control
•T.38/Pass-through/Modem FAX mode,
•Up to 14.4kbps
 DTMF mode: Signal/RFC2833/INBAND
 
Supplement Service
•Call waiting
•Call transfer(Blind  transfer, Attend Transfer , Half  blind transfer)
•Quick pick
•Call forwarding
•Hotline
•Call hold
•DND
•3-way conference(1/2/4FXS Support)
•Voice mail
 Direct IP address call
 
Call & Route
•  Port group
• IPtrunk 
• Primary and secondary SIP account
•  32inbound routing
•  32 outbound routing
•  Number manipulation
  Dial plan set
 
Maintain & Upgrade
•Web based configuration
•Telnet configuration
•Data backup/restore
•Support English and Chinese language
•Firmware upgrade by TFTP
•Syslog and CDR
•Web & telnet login password modify
•Factory reset
•Automatic time synchronization
•SNMP
•IVR local maintenance management
 
Network Features
•  NAT (Rout and Bridge)
•  Static IP, PPPoE, DHCP
•  DHCP server
•IP,TCP, UDP,TFTP, FTP, TCP,ARP,RARP,    Ping, NTP, SNTP, Http, DNS, Trancert
•  Static/dynamic ARP
 
Environment
•Power input:100-240VAC,50-60Hz
•Power consumption: 24FXS:80W;
  32FXS:100W
•Humidity: 10%-90%  no condensation
 

 Pictures:

 1 unit/box. 10 units/carton.

Shipping ways: ESM, DHL,AIR.

Delivery time: 1-3 working days after pay.

 1 year warranty. Fast delivery, good after service,  tech support

 With R & D team, OEM is accepted in bulk order.

 Unlocked or locked----Unlocked

New or second hand----100% NEW and original.