Grandstream Networks GXP2160 - Firmware Version 1.0.7.25; Firmware Version 1.0.7.15; Firmware Version 1.0.6.9; Firmware Version 1.0.6.2

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GXP21XX User Guide
Version 1.0.9.108
Firmware Version 1.0.7.25
 Added support to stop Screensaver when VPK is active.
 Improve Auto-provision for Vonage server.
 Change default Dial Plan to { x+ | \+x+ | *x+ | *xx*x+ }.
 Added Conference CEI to support UCM conference change.
 Added support to display status detail on LCD screen when Ethernet not connected, account not
register or configured.
Firmware Version 1.0.7.15
 Added support for Virtual Multi-Purpose Keys.
 Changed the default provisioning protocol to HTTPS.
 Added support for iLBC and G723.
 Added support to show programmable keys status on web UI.
 Added Blind and Attended Transfer softkey options.
Firmware Version 1.0.6.9
 For GXP2135 only.
Firmware Version 1.0.6.2
 For GXP2170 only.
Firmware Version 1.0.1.19
 Added GXP2130.
Firmware Version 1.0.0.17
 This is the initial version for GXP2140/GXP2160.