Configure Cisco SPA504G for JustCall
Set up my phone system2 min readUpdated 2026-03-14
Configure Cisco SPA504G for JustCall
Connect your Cisco SPA504G desk phone to JustCall using SIP credentials.
Available on: All plans
Step 1 — Get your SIP credentials
- Log into JustCall and go to Phone Numbers.
- Select your number and click Generate SIP Settings.
- Note the Domain, Username, and Password.
Step 2 — Find your phone's IP address
- On the phone, press the Paper button.
- Press 9, then select option 2.
- Note the IP address displayed.
Step 3 — Configure the phone
- Open a browser and go to
http://<phone-IP-address>/. - Log in as Admin.
- Go to the Ext 1 tab.
- Enter the following settings:
| Setting | Value |
|---|---|
| SIP Port | 5060 |
| Proxy | justcallv1.sip.us1.twilio.com |
| Register Expires | 3600 |
| Codec | G729a |
| Display Name | Your JustCall SIP Username |
| User ID | Your JustCall SIP Username |
| Password | Your JustCall SIP Password |
- Click Save.
Your Cisco SPA504G is now ready to make and receive calls through JustCall.
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