Panasonic KX-TD612NZ - Manual (Page 49)

Operation
User Manual 49
Changing the dialling mode from pulse to tone (Pulse to Tone Conversion)
To access services such as computer telephone services, Voice Mail, etc., that require a tone, you
can temporarily change the dialling mode from Pulse to Tone.
DPT/SLT
Enter desired number.
desired no.
Dial #.
After the line is connected
#