Sony SPP-IM977 - Manual (Page 36)

36 US Telephone Features
Making calls with speed dialing
1
Press (LINE 1) or (LINE 2) to select the line.
2
Press (SPEED DIAL).
3
Enter the desired speed dialing number ((0) to (9)).
The phone number stored as the speed dialing number will
be dialed.
To check the phone number before speed dialing
When not making a call with the base phone, press (SPEED DIAL) and
then one of the dialing keys ((0) to (9)).
The number stored on the key appears on the display for five seconds.
To dial the number, press (LINE 1) or (LINE 2) while the number is
displayed.
Speed dialing (continued)