产品名称：eWay-4002/4004/4008/4016/4024 eWay模拟语音网关 产品描述：     eWay40系列是4端口FXS/FXO可配置语音网关，带有2个以太网接口，可以作为路由器使用，提供NAT和DHCP， PPPOE功能。     支持H.323、MGCP信令协议，并且提供QoS，确保通话质量。

性能特点： TCP/IP protocols   IP, UDP, TCP, ICMP, ARP, SNMP, Telnet   NAT, DHCP, DNS, FTP,   RTP, RTCP ITU Standards   G.156 Echo Chancellor   G.723.1, G.729A, G.711 Audio Compression   Silence Detection VOIP Signaling Protocols   MGCP 1.0   H.323v4 Others Standards   ANSI TIA/EIA 464   ANSI T1.403   AT&T TR54016   IEEE 802.3 Management   SNMP agent   Local RS232 console   Remote Telnet console   FTP firmware upgrade Analog Gateway Product Matrix      Model        Interface      Ports   VRG4-M40 MGCP,    FXS            4   VRG4-M04 MGCP,    FXO            4   VGR4-M31 MGCP,  FXS+FXO         3+1   VRG4-H40 H.323,   FXS            4   VRG4-H04 H.323,   FXO            4   VRG4-H13 H.323, FXS+FXO         1+3 Analog FXS   Telephone ports (RJ-11)   2500-series analog telephones   Two telephones per port, REN capacity: 2.0B   DTMF detection   Caller ID generation   DID line   Impedance: 600 ohms   Ringing voltage: 50 Vrms, 119 V peak to peak   Ringing frequency: 20 Hz Analog FXO   Trunk ports (RJ-11)   Analog Loop Start (LS)   Caller ID detection   DTMF generation and detection   Impedance: 600 ohms Dual Ethernet Ports   10BaseT Ethernet port for WAN access   10BaseT Ethernet port for LAN access Console Port   RS232-DCE, DB9F LEDs   2 per phone port: port-type, activity   2 per Ethernet port: Link, Activity   Power indicator   MGCP or H.323 Protocol External Power Brick   Input power: 100–240 VAC,   Output Power: 5V VDC, 3A 联系购买：     上海震迪网络科技有限公司     地址：上海市宝城路155号名都新城12号101室     电话：+8621-5415-9916  5415-9987  5102-1188  5102-1158     传真：+8621-5415-9987     网址：www.china-eway.com     邮件：voip@china-eway.com     服务热线：700-2100-53166