Sony SPP-ID300 Operating Instructions Manual page 17

Receiving calls (continued)
To turn off the ringer
You can turn the ringer off by setting RINGER to OFF. The handset
won't ring, but you can still make calls. You can also receive calls if
another telephone connected to the same line rings to inform you on
incoming calls.
1
Press (PGM).
2
Press $ or 4 to make "RINGER" flash.
3
Press (ENTER).
4
Press $ or 4 to make "OFF" flash.
5
Press (ENTER).
You hear a long confirmation beep.
6
Immediately replace the handset on the base unit.
Note
Do not skip step 6. The ringer setting is valid after you replace the handset on
the base unit for more than three seconds.
To turn on the ringer
Do the above operation and make "ON" flash in step 4.
EN
16
Basics