详细介绍

产品特性：

*一个PSTN life line,一个FXS口, 一个WAN口和一个LAN口
*支持SIP 2.0 (RFC 3261), PPPoE, STUN, DHCP (客户端和服务器端)
*支持三个SIP 用户帐号
*支持Firmware 通过TFTP,FTP和HTTP自动升级
*所有来电响铃，通过电话按键(**) 或者(#) 选择VOIP和PSTN电话
*支持来电显示或者阻止
*支持call hold, call waiting, call forwarding and call transfer
*可设置拨号规则，拨号音，忙音，回拨音，警告音

功能说明：

*PSTN+VoIP:接收/ 拨打PSTN和VoIP电话，自动检测/自动切换通道
*支持SIP 2.0 (RFC 3261), PPPoE, STUN, DHCP (客户端和服务器端)
*支持Firmware 通过TFTP,FTP和HTTP自动升级
*支持多个语音编码，包括G.711, G.711A, G.723.1, G.729A/B, G.726
*支持in-band and out-of-band DTMF 转移
*内置路由，NAT,网关，LAN旁路和DMZ 端口转移
*支持SS,VAD,CNG，AGC, QoS和,线性回音消除
*支持标准加密解密(DIGEST 采用MD5 and MD5-sess)
*支持自动NAT穿透技术，不用手工对防火墙/NAT操作

Yealink SIP-GW3CM is a next generation IP communication solution with complete functions and high performance-price ratio. It is a voice, fax, internet data and PSTN "all-in-one" integrated access device, enabling feature-rich telephone services and features over internet connection.

Its elegant and fashionable design, high-level voice quality, 3 SIP accounts availability can bring customers unlimited convenience and content of IP communication.

-Make/Receive both VoIP and PSTN calls

-1*WAN, 1*LAN, 1*FXS, 1* PSTN lifeline

-Support 3 SIP user accounts

-Support auto-provision via TFTP, FTP and HTTP

-Support configuration via web browser, console and IVR

-Support Caller ID/Name display or block

-Dial plans, dial tone, busy tone, ring back tone, alert tone can be set flexibly

Key feature:

Make/Receive both VoIP and PSTN calls.

Auto-detection and auto-switch to VoIP or PSTN calls .

Support 3 user accounts.

Phone rings for all incoming VoIP and PSTN calls.

VoIP or PSTN calls selected by phone key.

Support Caller ID/Name display or block.

Support call hold, call waiting, call forwarding, call transfer and IVR.

Dial plans, dial tone, busy tone, ring back tone, alert tone can be set flexibly.

Network Features:

Support SIP 2.0 (RFC3261) protocol.

Support NAT transverse: STUN mode.

IP Assignment: Static IP/ DHCP/ PPPoE

Auto-provision and upgrade via TFTP, FTP and HTTP.

Support in-band and out-of-band DTMF transfer.

Support  standard encryption and authentication.