Siemens 600Series - Manual (Page 58)

2-22 ROLMphone 300/600 Series User Guide
Changing Your Telephone’s Ring
Tone
To change your
ring tone ➩ Get a dial tone.
➩ Dial * 5 7 2.
➩ Dial single digits (1 through 8) to hear
various tone pitches. If you have a display
telephone, it displays the selected tone’s
number. The last tone you hear before you
hang up will become the ring tone of your
telephone.