Yealink SIP-T2 SERIES Administrator's Manual page 230

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
The following shows a portion of the keypad input method file ―Russian_ime.txt‖:
To customize a keypad input method file:
1. Open the desired keypad input method file (e.g., ime.txt) using an ASCII editor.
2. Under the input method field (e.g., [abc]), add new characters or adjust the
characters order within the double quotation marks on the right of the equal sign.
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