An Avaya J-Series phone registers to RC/ACO by entering the same set of SIP fields directly on the device — either using the phone's own keypad, or through its web GUI once the phone's IP address is known. Both methods configure identical settings; the web GUI is generally faster for entering longer values such as the SIP domain or Outbound Proxy.

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Retrieving RC/ACO SIP Information

Both provisioning methods below require SIP credentials obtained from the RC/ACO admin interface first — see Obtaining SIP Credentials from RC/ACO for the general flow.

For an Avaya J-Series phone specifically:

1. Navigate to Phone System > Phones & Devices > User Phones and select the extension
2. Select Setup and Provision > Other Phones, then select the Existing Phone tab
3. Select the appropriate Outbound Proxy from the dropdown — this varies by region (e.g., sip10.ringcentral.com:5090 for North America)
4. Note the Authorization ID listed in this view — RC/ACO requires this value to register the phone

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Provisioning via the Phone's Keypad

1. On the phone, log into Administration using the default credentials — the login is 27238 (spells "craft")
2. Using the phone's keypad, navigate to the SIP section — approximately 10 clicks down from the Administration menu
3. Under SIP Global Settings, enter the following values:

4. Save and exit SIP Global Settings
5. Select SIP Proxy List, then select New, and enter the Outbound Proxy value obtained from RC/ACO
6. Return to the phone's main screen — it will prompt for the extension's username and password, obtained from RC/ACO

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Provisioning via the Phone's Web GUI

Finding the Phone's IP Address

1. On the phone, log into Administration using the default credentials — 27238 (spells "craft")
2. Navigate to IP Configuration > Ethernet IPv4
3. Note the IP address listed under Phone

Accessing the Web GUI

1. From a browser on the same network, navigate to https://<phone IP address> using the IP address found above
2. Log in using the default credentials: username admin, password 27238 (spells "craft")
3. Change the password when prompted on first login

Configuring SIP Settings in the Web GUI

The same fields configured on the keypad are available in the web GUI's SIP section, typed or toggled directly rather than entered via the dial pad: SIP Domain, Registration Policy, Failback Policy, SIP Proxy Policy, the User ID Field toggle, and the Outbound Proxy value under SIP Proxy List.

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Registration Interval

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Registering the Extension in CCaaS