EIA2016QB Features: Voice Codec: G.711.G.723.1.G.729A Voice Activity Detection (VAD) with CNG (comfort noise generation) and PLC (packet loss concealment), Dynamic Jitter Buffer L2/L3 QoS T.38 FAX WEB. telnet configuration Auto Provisioning PPP/PPPOE,DHCP Client/Server EIA2016QB is an 16 FXO gateway based on the SIP2.0 standard.Providing one WAN port and three LAN ports,it allows up to four computers to share an ADSL line in office or at home. EIA2016QB provides a variety of management ways,and supports auto-provisioning. The user interface is very friendly, and the configuration is simple and ease-to-use.It supports software updating by means of TFTP,FTP or provision. Dimensions(Length*Width*Height, unit: mm) 440*280*43 Weight (unit: kg) 2.8 Product specifications(FX0) 16 Operating temperature (unit: C) 0-40 Storage temperature (unit: C) -20-70 Operating humidity 10%-90% External power adapter Yes Power input 220VAC/50Hz/1.3A External power input 100-240V Power (unit: W) 15w Protection of telephone interface against lightning strike 10/700. 4000V Network interface 10/100BASE-TX Number of LAN ports 4