Sony SPP-S9226 Operating Instructions Manual page 68

Using voice mail service (continued)
If you move or change your telephone company
Message waiting signals are sent in one of two ways: FSK signaling or
"stutter" signaling (Your telephone company can provide you with
more information about your service).
The first time this phone receives a voice mail message, it will set itself
to the FSK service and will lock out the stutter service if your
telephone company is in FSK service.
When you move or change your telephone company, you need to
perform the following procedure. The phone will returns to ready state
for either FSK or stutter dial tone voice mail recognition.
To reset this phone
1
Perform steps 1 and 3 on page 67.
2
Turn Jog Dial to choose "RESET", and then
press Jog Button (ENTER).
You hear a long confirmation beep and the
phone is reset.
US
68
Caller ID Features
MESSAGES LAMP
LIGHT-OFF
RESET