User's Manual
FIRMWARE VERSION 1.0.7.6    HT502 USER MANUAL     Page 46 of 48  
named "cfgxxxxxxxxxxxx.xml" followed by a file named "cfgxxxxxxxxxxxx", where "xxxxxxxxxxxx" is the 
MAC address of the device, i.e., "cfg000b820102ab". The configuration file name should be in lower case 
letters. 
For more details on XML provisioning, please refer to: 
http://www.grandstream.com/general/gs_provisioning_guide_public.pdf
FIRMWAREANDCONFIGURATIONFILEPREFIXANDPOSTFIX
Firmware Prefix and Postfix allows device to download the firmware name with the matching Prefix and 
Postfix. This makes it the possible to store ALL of the firmware with different version in one single 
directory. Similarly, Config File Prefix and Postfix allows device to download the configuration file with the 
matching Prefix and Postfix. Thus multiple configuration files for the same device can be stored in one 
directory. 
In addition, when the field “Check New Firmware only when F/W pre/suffix changes” is set to “Yes”, the 
device will only issue firmware upgrade request if there are changes in the firmware Prefix or Postfix. 
MANAGINGFIRMWAREANDCONFIGURATIONFILEDOWNLOAD
When “Automatic Upgrade” is set “Yes, every” the auto check will be done in the minute specified in this 
field. If set to “daily at hour (0-23)”, Service Provider can use P193 (Auto Check Interval) to have the 
devices do a daily check at the hour set in this field with either Firmware Server or Config Server. If set to 
“weekly on day (0-6)” the auto check will be done in the day specified in this field. This allows the device 
periodically check if there are any new changes need to be taken on a scheduled time. By defining 
different intervals in P193 for different devices, Server Provider can spread the Firmware or Configuration 
File download in minutes to reduce the Firmware or Provisioning Server load at any given time. 
Automatic Upgrade: 
No  Yes, every 
10080
minutes(60-5256000). 
Yes, daily at hour 
1
(0-23).  Yes, weekly on day 
1
(0-6). 










