Sony IT-ID20 - Manuel (Page 9)

Getting Started
9 US Getting Started
Choose the dialing mode
For the telephone to work properly, select an appropriate dialing
mode (tone or pulse) with a ball-point pen, etc.
Depending on your dialing system, set the DIAL MODE switch as
follows:
If your dialing system is Set the switch to
Tone T
Pulse P
If you aren't sure of your dialing system
Make a trial call with the DIAL MODE switch set to T.
If the call connects, leave the switch as is; otherwise, set to P.
DIAL MODE
switch