Grandstream GXW-4008

The GXW series offers the small enterprise, SOHO, remote offices and multi-location enterprises a cost-effective, easy to deploy VoIP FXS analog gateway.

Designed and tested for full interoperability with leading IP-PBXs, Softswitches and most SIP-based environments, the GXW technology ensures manageability, a simple configuration, and superb voice quality. GXW Series IP Gateway is based on open industry standards.

  • 8 FXS analog port gateways
  • Two RJ-45 ports (switched or routed)
  • TFTP and HTTP firmware upgrade support
  • Supports Audio Codecs: G711, G723, G729 and GSM
  • T.38 compliant
  • Web management for easy configuration and installation


  • Telephone Interfaces
    • 8 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
    • iiBC
  • 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 4008Analog IP Gateway
  • Ethernet cable
  • 12V universal power adapter Grandstream Users Group discussion forum GXW Series User and Developer Forum

Known Issues

  • It always queries the provisioning configuration file using the MAC address associated to the LAN interface even when only the WAN interface is plugged to the network;
  • it is not possible to use a sub path when using provisioning via UDP, you can only specify an IP address or an host name;
  • Generation of DTMF on FXS port (RFC2833) is either not done or incorrect (very short tone, and rapid dtmf events cause wrong dtmf sequence). When using with a phone this is not a problem, but when using to feed an analog PBX that has an IVR it causes failures.

Configuration Tips

  • DHCP Server on the LAN port can be enabled/disabled with option P5001 (# Enable LAN DHCP. 0 - No, 1 - Yes)
  • Details for all options can be found in the configuration template:
  • To see all config fields without the template, log into the web gui and view the HTML page source (CTRL-U in Firefox)
  • When naming config files for provisioning, use the MAC address printed on the label on the bottom of the device (same as the one on the box)
  • Serial settings for console port: 115,200bps, 8,N,1, flow control off


Where to Buy

Grandstream GXW-4008] for $399.95, shipping worldwide

Created by: mbuckaway, Last modification: Tue 03 of Jun, 2014 (17:32 UTC) by sergei
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