- If the phone’s web UI cannot be accessed after upgrading, please clear web browser cache and it should be accessible again. This is due to front end is cached with previous script, and this issue will be fixed in future release.
- Added Support to download certificate files during provisioning
- Added Support for CID and Image from SIP NOTIFY
- Updated Korean LCD and web UI display translations
- Added Call hold is not allowed if receiving a 488
- Added Support of BLF state following pval value for iPageOn platform
- Added Option to enable or disable Acoustic Echo Cancellation
- Updated backup proxy SIP registration behavior for iPageOn platform
- Added Ability to randomize the sending of TR069 INFORM message for iPageOn platform
- Added Support for specific failover on TCP transport error case for iPageOn platform
- Added Support for specific failover for 503 response for iPageOn platform
- Added Support of warehouse upgrade mode
- Added Support for 802.1x authentication with special letter like "@","-"
- Fixed some comments display error
- Fixed BLF call pick-up dial plan does not work correctly
- Fixed Uploaded ring tone plays abnormally if “Always Ring Speaker” is enabled
- Fixed LCD displays encryption icon in multicast paging call
- Fixed Call forwarding via LCD menu does not work correctly
- Fixed Device does not send SIP SUBCRIBE messages when switching between OBPs
- Fixed Device does not send "Idle to Busy" action URL after entering onhook dialing page.
- Fixed Invite cannot be printed out in syslog
- Fixed Device audio loss issue when there is jump in RTP timestamp.
- Fixed Device LCD screen quits dialing screen while editing the call forward destination number
- Fixed Device freezing with possible memory leak
- Fixed The tooltip of "Proxy server Switch Delay" display error
- Fixed Exporting backup package works abnormally
- Improved the softkey for conference should not appear until getting ringback tone from the PSTN line and then establishing a successful conference
- Fixed Device’s echo sound on speaker issue
- Fixed Device responds with 488 when incoming INVITE contains 2 m lines on RTP and SRTP causing calls to fail with BroadSoft SBC
- Fixed Locked keypad gets unlocked after setting "Keypad Lock Timer" to 0
- Fixed No sound in speaker mode after pressing SpkOn during headset call if "Ring for Call Waiting" is enabled
- Fixed Device One-way audio issue after semi-attended transfer using SRTP
- Fixed Device only sends missed call URL after rejecting call if both Missed Call URL and Rejected Call URL are configured
- Fixed Device only CONTACT header is using SIPS when setting SIP URI Scheme when using TLS to SIPS
- Fixed Device still sends all other syslog packets when setting the syslog level to ERROR
- Fixed Device still sends TCP Keep-Alive With all Keep-Alive settings off
- Fixed "Download and Process ALL Available Config Files" function works abnormally
- Fixed Device’s Conference URI works abnormally with shared line for Broadsoft
- Fixed Device’s establishment of conference is abnormal with shared line for Broadsoft
- Fixed Picking up a call works abnormally when registering on Broadsoft and set VPK to Shared Line mode
- Fixed No call forwarding indicator when local call features are turned off for Broadsoft
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.
Top 4 Download periodically updates information of Grandstream GXP2135 IP Phone Firmware 1.0.9.101 Beta full driver from the manufacturer, but some information may be slightly out-of-date.
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