HCD601P/TSD-113
01.Ring volume control
02. Audio recording output
03. Anti-slip base
04. Handset volume control
05.Microphone volume control
06. Redial key
07. Pause button
08. Power button
09. LED for indication In use / calling
10. Flash key with adjustable time (100ms or 300ms)
11. Extension output
12. Mute key with LED for indication
13. Pulse or Tone Dialing
Miss guo 15019254405