Grandstream DP715 IP Phone Firmware 1.0.0.33

BUG FIXES

- Fixed no audio issue when iLBC Vocoder and iLBC frame size is set at 30ms
- Fixed SRTP call crash issue when handset "R" is pressed sometimes
- Fixed cannot change "Voice Frames per Packet" value on web UI
- Fixed channel 2 cannot return to idle status
- Fixed handset1 in Hunting Group ringing does not timeout
- Fixed setting Hunting Group to NONE does not take effect until after reboot
- Fixed Shared Line affects the other line
- Fixed device does not trigger provisioning process when using UCM ZeroConfig
- Fixed after clearing the dial plan, user can still successfully Save and Apply
- Fixed no ring back tone when "Disable Call-Waiting Caller ID" is set to “YES”
- Fixed crash issue with core dump
- Fixed [TR-069] dateTime Type typo
- Fixed device rejects SIP reply from Outbound Proxy under some conditions
- Fixed memory leak caused by overwriting MWI timer pointers without first cancelling the existing timer
- Fixed If device loses internet connection, it tries to register to secondary proxy
- Fixed in auto-dial performance test, all ports stopped working
- Fixed Attended Transfer does not work

ENHANCEMENTS

- Added option "Disable Call-Waiting Tone"
- Add support for DHCP Option 160
- Set TLSv1 protocol to be used with wget
- Added configurable RFC 3261 timer D length support
- Added support to announce the registration number via feature code
- Added support for NAT transfer feature. Added web UI option “SIP REGISTER Contact Header Uses”
- Added 911 emergency call support
- Added SYSLOG message when Registration LED goes out

About VoIP Phone Firmware:

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.