user manual
Grandstream Networks, Inc.  GXP21xx User Manual  Page 28 of 41 
                 Firmware version: 1.0.1.66         Last Updated: 05/2011 
Upgrade Via 
This field allows the user to choose the firmware upgrade method: TFTP, HTTP or 
HTTPS.  
Firmware Server Path 
Defines the server path for the firmware server. It can be different from the 
Configuration server which is used for provisioning.  
Config Server Path 
Defines the server path for provisioning; it can be different from the firmware server.  
Firmware File 
Prefix/Postfix 
Default is blank. If configured, GXP21xx will request the firmware file with the 
prefix/postfix and only the firmware with the matching encrypted prefix will be 
downloaded and flashed into the phone.  
This setting is useful for ITSPs. End user should keep it blank.  
Config File  
Prefix/Postfix 
Default is blank. If configured, GXP21xx will request the config file with the 
prefix/postfix and only the file with the matching encrypted prefix will be downloaded 
and flashed into the phone.  
This setting is useful for ITSPs. End user should keep it blank. 
Allow DHCP Option 43 
and Option 66 to 
override server 
Default is “Yes”. This allows device gets provisioned from the server automatically.
Automatic Upgrade 
This function is used by ITSP. End user should NOT touch these parameters. 
Default is “No”. Choose “Yes” to enable automatic HTTP upgrade and provisioning. 
In “Check for upgrade every” field, enter the number of minutes to check the HTTP 
server for firmware upgrade or configuration changes. 
When set to “No”, the phone 
will only perform HTTP upgrade and configuration check once at boot up. 
Authenticate Conf File 
Default is “No”. If set to “Yes”, configuration file would be authenticated before 
acceptance. End user should use default setting.  
Enable TR-069 
Default is “No”. 
ACS URL 
URL for TR-069 Auto Configuration Servers (ACS). 
TR-069 Username 
Enter username for TR-069. 
TR-069 Password 
Enter password for TR-069. 
Save Credentials 
Save TR-069 credentials. Default is “No”. 
Auto Login 
Auto Login TR-069 account. Default is “No”. 
Periodic Inform Enable 
Enable periodic inform. Default is “No”. 
Periodic Inform Interval 
When enabling periodic inform, set up the periodic inform interval. 
Connection Request 
Username 
Enter the connection request username. 
Connection Request 
Password 
Enter the connection request password. 
Authentication Method 
Select the authentication method among “No authentication”, “Basic” or Digest. 










