Grandstream GXV3240 Administration Guide - Manual (Page 14)

Firmware Version 1.0.3.37 GXV3240 Administration Guide Page 12 of 117
FIRMWARE VERSION 1.0.1.39

Add Check SIP User ID for Incoming INVITE [ACCOUNT/SIP SETTINGS]

Add Only Accept SIP Requests from Known Servers [ACCOUNT/SIP SETTINGS]

Add Configuration via Keypad Menu [MAINTENANCE/UPGRADE]
 Delete “Configuration via LCD Menu”
FIRMWARE VERSION 1.0.1.29

This is the initial version.