Panasonic KX-TD500 - Manual (Page 211)

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Programming Guide 211
Parameter Key Type
Default Not Stored
Value Range Please refer to "Description / Function."
Description/Function Not Stored: Key Type is not assigned.
SINGLE-CO: Single-CO button
GROUP-CO: Group-CO button
DSS: Direct Station Selection button
ONE-TOUCH: One-Touch Dial button
MESSAGE: Message Waiting button
FWD / DND: Call Forwarding / Do Not Disturb button
G-FWD: Group Call Forwarding button
SAVE: Saved Number Redial button
ACCOUNT: Account Code entry button
CONF: Conference button
VTR: Voice Mail Transfer button
2WAY-REC: Two-way Recording button
2WAY-TRN: Two-way Transfer button
LCS: Live Call Screening button
LCS CANCEL: Live Call Screening Cancel button
DAY / NIGHT: Day / Night switching button
ANSWER: Answer button
RELEASE: Release button
TONE THROUGH: Tone Through button
SS: ISDN Service button
Reference 4.1.2 Customising the Buttons (U/M)