Grandstream GXW4104 VoIP Gateway Designed and tested for full interoperability with leading IP-PBXs, soft-switches and SIP-based environments, the Grandstream GXW4104 technology ensures manageability, a simple configuration, superb voice and video quality and feature rich functionality. The GXW FXO IP Analog Gateway series is based on open industry standards. Grandstream GXW4104 VoIP Gateway Overview The Grandstream GXW4104 is an advanced low-to-mid-density analog gateways with dual 10M/100M network ports, integrated router, rich telephony features, comprehensive voice codec and fax support, flexible dial plan, and strong security protection that can be used for IP enabling traditional analog PBX or key systems, inter-branch-office voice/data communications, and as PSTN trunk gateways for software based IPPBX systems. Grandstream GXW4104 Features and Functions 4 FXO port media gateway Video surveillance port External power supply Two RJ-45 ports 10/100 Mbps (switched or routed) TFTP and HTTP firmware upgrade support Multiple SIP accounts (choice of 3 profiles per account) Programmable PSTN line settings for different countries/regions 1 or 2 stage dialing Caller ID G.168 - echo cancellation Flexible DTMF transmission: In Audio, RFC2833, SIP Info or any combination of the 3 Selectable, multiple LBR coders per channel T.38 Fax compliant