Grandstream DP752 IP Phone Firmware 1.0.15.2

ENHANCEMENT

- Added support to input provisioning server username and password on handset UI when base station is trying to download a config file from a password protected server. [INPUT USERNAME AND PASSWORD ON HANDSET FOR PROVISION SERVER]
- Added support to configure Call Log settings. [CONFIGURE CALL LOG]
- Added DNS SRV Failover modes. [DNS SRV FAILOVER MODES]
- Added warning tone when auto answer a call or intercom. [WARNING TONE FOR AUTO ANSWER]
- Added option to automatically mute after auto answer a call or intercom. [WARNING TONE FOR AUTO ANSWER]
- Added support to disable SIP NOTIFY authentication.
- Added support for Auto Timer Zone feature.
- Added support to delete a paired base station from the handset.

BUG FIX

- Fixed a security issue that an XML field can be used as command injection.
- Fixed a security issue that user may get root access in the SSH shell with “gssu”command.
- Fixed DP75x cannot apply some GDMS settings issue.
- Fixed DP75x issue that when access to VM, it calls the number of Offhook Auto-dial number.
- Moved “No Key Entry Timeout” setting from Profile -> Call Setting to DECT ->Handset Settings.
- Fixed intercom has no missed call notification issue.
- Fixed DP75x does not report DND status to GDMS issue.
- Fixed DP75x cannot search the contacts in LDAP.
- Fixed DP72x and DP730 shows “error” when edit private contact.
- Fixed DP75x does not response 200OK after receiving the Reboot NOTIFY from UCM.
- Fixed DP75x still shows remote caller name in call history even after added it to contacts with a new name.
- Fixed DP75x still send INVITE when Dial Plan is {6868xxxx} and trying to call 68681 that does not match the Dial Plan.
- Fixed DP75x cannot dial out via Offhook Auto-dial when the line 1 is none.
- Fixed DP75x Force Timer do not take effect for session timer.
- Fixed DP75x will response 404 when it receive ‘sipaaa’ and enabled Validate Incoming Messages.
- Added prompt of “include the protocal header (“http:// or https://”)” for Global Phonebook Broadsoft XSI Settings.
- Fixed DP75x still shows cached Broadsoft XSI contacts after changed Broadsoft XSI settings to invalid one.
- Fixed DP75x need a reboot to take DNS Mode -> Use Configured IP to take effect.
- Fixed when DP75x dial back from missed call, the call history of the call back shows under incoming call instead of outgoing call.
- Fixed the user account cannot configure “Whitelist for WAN side” and “Blacklist for WAN side”.
- Fixed DNS Server2 in SSH status result is not aligned with other values.
- Fixed DP75x “use stun to detect network connectivity” does not take effect.
- Fixed DP75x “OPTIONS Keep Alive Max Lost” does not take effect.
- Fixed DP75x OpenVPN cannot disable comp-lzo.
- Fixed DP72x and DP730 will remove account DND settings after use Mute key to disable the handset DND.
- Fixed DP75x is not ringing when the call is received from PSTN using an Alcatel PBX.
- Fixed DP75x take rejected calls to missed call history, now it will be logged as received/answered call with a different icon.
- Fixed DP75x does not accept a SIP server with more than 4 sub domains.
- Fixed DP75x cannot redial an IP call from call history.
- Fixed DP72x/DP730 still display a null home number at the contact detail view after home number been removed and a work number been configured. 

About VoIP Phone Updates:

Firmware updates for VoIP Phones are very important as they usually contain many bug fixes, add new features and updates, as well as add additional security features.

One of the main problems users come across when attempting to upgrade their VoIP Phone is that their device may be locked to a certain Carrier. Adding an unlocked version of the firmware may cause the device to stop working on certain networks. This operation may void your carrier warranty and, as such, is not recommended.

Before downloading, make sure that you have selected the appropriate firmware for your device and that the update supports the VoIP service provider you use.

Generally, it is important to upgrade older firmware in sequence (v1 to v2 to v3) and so on, because many manufacturers don't launch standalone update packages.

Although using beta release firmware packages is tempting, it can prove to be quite risky as well. If you choose to try beta release updates, please read the detailed firmware notes and make sure that you have the possibility to revert to an older and more stable version in case the beta turns out faulty.

If you feel that this update can improve the functionality of your VoIP Phone, please use the download button and follow the installation instructions.