GVR111 is a dual port VoIP gateway (VoIP ATA) with the build-in powerful router functions, which can be as fast as 60Mbps, GVR111 can let you surf on the Internet and make IP calls at the same time.GVR111 allows you to connect up to 4 computers to share a Broadband Internet connection.It also acts like a VoIP gateway and let you to make voice calls over the Internet by using regular phones.It reduces your toll cost while maximizes your broadband investment.It provides 1 FXO port and supports call transfer from PSTN to IP or IP to PSTN.

VoIP SoC   CPU: MICREL KS8695X@133MHz
                      DSP: TI TMS3205402@100MHz

Flash 2MBytes Flash

RAM 8MBytes SDRAM    128Kbytes SRAM

Power Supply 
                      AC/DC Adapter   AC Input: 100~240V, 50~60Hz
                      DC Output: 5V, 1.2A

I/O Interfaces 
                      5 RJ-45 for 10/100 Switched Ethernet Ports,
                      One for WAN Port, the others for LAN Port
                      1 RJ-11 for Lifeline and FXO port
                      1 RJ-11 for FXS port

Audio Codec
                     G.711 (A-Law, u-Law)
                     G.723.1
                     G.729A/AB
                     Adaptive Jitter Buffer Management
                     Voice Activity Detection
                     Comfort Noise Generation
                     Echo Cancellation

Protocols 
                    SIP V2 (RFC 3261,3262,3263,3264)
                    Backward Compatible with RFC2543
                    Session Timer (RFC4028)
                    SDP (RFC2327)
                    RTP/RTCP (RFC1889 and RFC1890)
                    NAPTR for SIP URI Lookup (RFC2915)
                    STUN (RFC 3489)
                    ARP/RARP (RFC 826/903)
                    SNTP (RFC 2030)
                    DHCP/PPPoE
                    HTTP Server for Web Management
                    TFTP/HTTP for Auto Provisioning
                    Message Waiting Indicator (RFC3842)
                    DHCP Option Codes for SIP (RFC3361)
                    DNS/DNS SRV (RFC1706 and RFC 2782)

Applications
                   Mac address cloning
                     SIP proxy redundancy
                                   - dynamic via DNS SRV, A records
                     Direct IP to IP calling
                     NAT Traversal
                                   -Static NAT Route
                                   - Traversal by STUN
                     Support lifeline function
                     Build-in NAT Router/DHCP server

Management
                  Firmware Upgradeable
                     Web Management Interface
                     IVR-driven Management Interface
                     Auto Provisioning

Call Features
                     3-way Conference
                     Music on hold
                     Call Hold
                     Call Forwarding
                     Call Mute
                     Call Park
                     Call Progress Tone
                     Call Transfer
                     Call Waiting
                     Caller ID
                     DTMF Relay
                           - In-band, Out-band(RFC2833) and SIP Info
                     Hotline
                     Real time fax over IP via T.38

Dimension
          (L) 180 x (W) 140 x (H) 30 mm

Weight
          600g