Deskphones - Cisco Phones | Getting the phone's IP address | Analogue Telephone Adapter
1. Connect your analogue phone to Phone 1 at the back of your router.
2. On your analogue phone, press four star or asterisk (****) keys.
3. In the menu, press 110#. Take note of the IP address of your analogue phone once it will be announced.
NOTE: If your device is purchased directly from RingCentral, the default IP address is 192.168.15.1.
Using Cisco IP Phones
Deskphones | Connecting your RingCentral Desk Phone to your Network | RingCentral
Deskphones - Cisco Phones | Logging in to the phone's web user interface | RingCentral