Grandstream GXW-4004

Grandstream GXW4004 4FXS Analog VoIP Gateway

Features Include

The GXW-4004 is a next generation IP voice gateway that is interoperable and compatible with leading IP-PBXs, SoftSwitches and SIP platforms. The GXW FXS Gateway series is auto-configurable, remotely manageable and scalable. Each model features flexible dialing plans, PSTN failover, integrated call routing to support a pure IP network call and an external power supply. The GXW FXS Gateway series enables small and medium businesses to create seamless office environments, integrate a traditional phone system into a VoIP network, and efficiently manage communication costs.

The GXW FXS Analog IP Gateway series has a compact and quiet design (no fans) and offers superb audio quality, rich feature functionality, strong security protection, good manageability, and compelling price-performance ratio. It is auto-configurable, remotely manageable and scalable. It features 4 or 8-port FXS interface for analog telephones, dual routed or switched 10M/100M network ports with integrated router, PSTN life line in case of power failure, and an RS232 serial port for administration.

How does it work?
The Grandstream 4004 is a full featured, four port FXS gateway compatible with popular SIP-based IP PBX platforms such as Asterisk, Trixbox and others.

The Grandstream GXW4004 allows for the integration of up to (4) analog devices such as traditional analog telephones or fax machines. The Grandstream 4004 provides analog digital signal conversion and allows you to use legacy analog devices with IP based systems.


  • 4 FXS analog port gateways
  • Two RJ-45 ports (switched or routed)
  • Multiple SIP accounts & profiles (3 per system)
  • Supports Audio Codecs: G711, G723, G729 and GSM
  • T.38 Fax
  • G.168 Echo Cancellation
  • Supports PSTN/PBX analog telephone sets or analog trunks


  • Simple and flexible configuration options as a VoIP-PSTN Gateway
  • IP connectivity for analog phones, faxes, and legacy systems
  • Web management for easy configuration and installation
  • Offers toll quality voice compression
  • Configurable as a pure IP Communications system


  • Telephone Interfaces
    • 4 RJ11 FXS ports
  • Network Interfaces
    • 10M/100Mbps
    • Dual RJ45 ports
  • Admin Console Interface
    • RS232 Serial Port
  • LED Indicators
    • Power
    • Network
    • Line LEDs

Voice, Fax, Modem

  • Voice Over Packet Capabilities
    • G.168 complaing Echo Cancellation
    • Dynamic Jitter Buffer
    • Modem detection
    • Auto-switch to G.711
  • PSTN Fail-over Life Line
    • PSTN Failover on power failure
  • Voice Compression
    • G.711
    • G.723
    • G.726 (40/32/24/16)
    • G.729A/B/E
    • G.728
    • ilBC
  • DHCP Client Server
    • Nat Router or Switched Mode
  • Fax over IP
    • T.38 complaint Group 3 Fax Relay up to 14.4kpbs
    • Auto-switch to G.711 for Fax Pass-through (pending)
  • QoS
    • Diffserve
    • TOS
    • 802.1P/Q VLAN tagging
  • IP Transport
    • RTP
    • RTCP


  • DTMF Method
    • Felxible DTMF transmission method
    • User Interface of in-audio
    • RFC2833
    • SIP Info
  • IP Signaling
    • SIP (RFC 3261)
  • Multiple SIP server profiles and accounts per box
    • Up to 2 distinct SIP server profiles per system
    • Independent SIP account per port
  • Provisioning
    • TFTP
    • HTTP
    • HTTPS (pending)


  • Media
    • SRTP not available
  • Control
    • TLS/SIPS
  • Management
    • Syslog supprt
    • HTTPS
    • Telnet
    • Remote Management using Web Browser


  • Power
    • Output: 12VDC
    • Input: 100-240 VAC/ 50-60Hz
  • Environmental
    • Operational: 32-104 Farenheit or 0-40 Celsius
    • Storage: 14-140 Farenheit or -10-60 Celsius
    • Humidity: 10-90% Non-condensing
  • Dimensions
    • 230mm x 135mm x 35mm
  • Mounting
    • Wall mount & desktop

Additional Features

  • Short and long haul
    • REN3: uP TO 150FT ON 24 AWG LINE
  • Caller ID
    • Bellcore Type 1 & 2
    • ETSI
    • BT
    • NTT
    • DTMF-based CID
  • Polarity Reversal /Wink
    • Yes


  • EMC
    • EN55022/EB55024
    • FCC part15 Class B
  • Safety
    • UL

Ships With

  • GXW 4004 Analog IP Gateway
  • Ethernet cable
  • 12V universal power adapter

See Also

Where to buy

Created by: nhynes, Last modification: Tue 03 of Jun, 2014 (17:29 UTC) by sergei
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