Yealink SIP IP Phones Version51 Change Log
1 Introduction
1. Firmware Version: V51
2. Product Name: SIP-T28/T26/T22/T20/T12
3. Release Date: July 30, 2010,
2 New Features
1. Added Broadsoft DND&FWD synchronization.
2. Added Broadsoft network conference support.
3. Added Broadsoft redundant server (DNS-SRV) support.
4. Added LDAP function. (T28/T26/T22/T12)
5. Supported EXP39. (T28/T26)
6. Enable SoftKey function configurable. (T28/T26/T22/T12)
7. Added Text-LOGO in T20.
8. Supported EHS36. (T28/T26)
3 Optimization
1. Improved Broadsoft BLF List support. (T28/T26/T22/T20)
2. Supported to logout in web configuration page.
3. Enabled to reset the phone to factory setting by long-pressing ‘Conf’ key. (T12)
4. Enabled to display picture in XML Browser.
5. Enabled to hold the current call when pressing ‘hold’ key instead of setting up a new call before. (T12).
6. Enabled to be set Always Off/Always On to LCD backlight setting. (T28/T26/T22)
7. Enabled to park a call to another server by ‘Call Park’.
8. Enabled the key tone of ‘SENT’ key configurable, default is enabled.
9. Enabled to receive a busy tone after the call is busy when ‘Call Completion’or ‘Auto Redial’is enabled.
10. Enable value option of DSSkey-Tran, blind transfer or attend transfer can be configured through it.
11. Added ‘prefix’ option in DSSKey to auto enter the prefix number and wait to enter the extension number.
12. Improved ‘DEL’ button to the third SoftKey (from the left to the right) in Dial-up and settings interface. (T12)
13. Modified the arrangement of the softkey to be uniform.
14. Modified the default input method is ‘abc’ both in search and add contact in phonebook.
15. Optimized TR069 web configuration page.
16. Added ‘LDAP’ option in DSSKey.
17. Added ‘SWAP’ SoftKey when the phone has two calls at the same time. (T28/T26/T22/T12)
18. Modified the Advanced mode of Hot Desking to be restored to the previous account after logging out.
19. Supported BLA function. (T20/T22 Line Key)
20. Enabled to have a private talk before conference.
