User Guide for the SIP-T27G IP Phone 
viii 
Disconnecting the Wireless Network Connection ............................................................................... 30 
Deactivating the Wi-Fi Mode ....................................................................................................................... 30 
Registration ............................................................................................................................................................. 30 
Idle Screen ............................................................................................................................................................... 31 
Entering Data and Editing Fields..................................................................................................................... 31 
Customizing Your Phone ............................................................. 35 
General Settings .................................................................................................................................................... 35 
Power Saving ...................................................................................................................................................... 35 
Backlight ............................................................................................................................................................... 38 
Contrast ................................................................................................................................................................ 39 
Language.............................................................................................................................................................. 39 
Time & Date ........................................................................................................................................................ 40 
Administrator Password ................................................................................................................................. 42 
Key As Send ........................................................................................................................................................ 43 
Phone Lock .......................................................................................................................................................... 43 
Audio Settings ........................................................................................................................................................ 46 
Volume .................................................................................................................................................................. 46 
Ring Tones ........................................................................................................................................................... 48 
Key Tone ............................................................................................................................................................... 50 
Contact Management ......................................................................................................................................... 50 
Directory ............................................................................................................................................................... 50 
Local Directory ................................................................................................................................................... 52 
Blacklist ................................................................................................................................................................. 61 
Remote Phone Book ........................................................................................................................................ 63 
Call History Management .................................................................................................................................. 65 
Viewing History Records ................................................................................................................................ 65 
Placing a Call from History Records .......................................................................................................... 66 
Adding a Contact to the Local Directory/Blacklist ............................................................................... 66 
Deleting History Records ............................................................................................................................... 66 
Disabling History Record ............................................................................................................................... 67 
Search Source List in Dialing ............................................................................................................................ 67 
System Customizations....................................................................................................................................... 69 
Logo Customization ......................................................................................................................................... 69 
Headset Use ........................................................................................................................................................ 70 
Bluetooth Headset............................................................................................................................................ 72 
DSS Keys ............................................................................................................................................................... 76 
Account Management .................................................................................................................................... 88 
Dial Plan ................................................................................................................................................................ 90 
Emergency Number ......................................................................................................................................... 96 
Live Dialpad ......................................................................................................................................................... 97 
Hotline ................................................................................................................................................................... 97 
Basic Call Features ........................................................................ 99 
https://arttel.ru/
https://arttel.ru/shop/ip-telefony/yealink-sip-t27g