User's Manual
Table Of Contents
FIRMWARE 1.0.3.4  GXW42XX USER MANUAL  PAGE 50 OF 56 
browser will then display a message window to confirm that reboot is underway. Wait 30 seconds to log in 
again. 
CONFIGURATION THROUGH A CENTRAL SERVER 
Grandstream GXW4248 can be automatically configured from a central provisioning system. 
When GXW4248 boots up, it will send TFTP or HTTP/HTTPS requests to download configuration files,  
“cfg000b82xxxxxx” and “cfg00082xxxxxx.xml”, where “000b82xxxxxx” is the LAN MAC address of the 
GXW4248. If the download of “cfgxxxxxxxxxxxx.xml” is not successful, the provision program will issue 
request a generic configuration file “cfg.xml”. Configuration file name should be in lower case letters. 
The configuration data can be downloaded via TFTP or HTTP/HTTPS from the central server. A service 
provider or an enterprise with large deployment of GXW4248 can easily manage the configuration and 
service provisioning of individual devices remotely from a central server.  
Grandstream  provides  a  central provisioning system GAPS (Grandstream Automated Provisioning 
System) to support automated configuration of Grandstream devices.  GAPS uses enhanced (NAT 
friendly) TFTP or HTTP (thus no NAT issues) and other communication protocols to communicate with 
each individual Grandstream device for firmware upgrade, remote reboot, etc.  
Grandstream provides GAPS service to VoIP service providers. Use GAPS for either simple redirection 
or with certain special provisioning settings.   At boot-up,  Grandstream devices by default point to 
Grandstream provisioning server GAPS, based on the unique MAC address of each device, GAPS 
provision the devices with redirection settings so that they will be redirected to customer’s TFTP or 
HTTP/HTTPS server for further provisioning.  
Grandstream also provides configuration tools (Windows and Linux/Unix version) to facilitate the task of 
generating device configuration files.  The Grandstream configuration tools are free to end users. The 
configuration tools and configuration templates are available for download from 
http://www.grandstream.com/support/tools . 










