NOTE: Images may vary depending on your Cisco desk phone.
Deskphones - Cisco Phones | Speed Dial | Creating numerical speed dials
1. Press Setup.
2. Scroll to Speed Dials and press Select.
3. To create or edit a speed dial, select an unused speed dial location.
NOTE: An unused speed dial location may be marked with Not Assigned.
4. Press Edit.
5. Enter the phone number for the speed dial and then, press Save or ok.
For Cisco SPA525G and SPA525G2, you can enter the name and the phone number for the speed dial. You can also select a contact from the address book by pressing Option and select Select From Address Book. Scroll to choose the contact and press Select.
Using Cisco IP Phones
Deskphones - Cisco Phones | Speed Dial | Using Speed Dials
Deskphones - Cisco Phones | Speed Dial | Creating speed dials on unused line buttons | RingCentral