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updatedAt: 2026-08-06T19:45:54.000Z
agentTools:
projectIndex: https://guide.xima.cloud/llms.txt
---
# (3CX) Provisioning an Avaya J-Series Phone
Registers a physical Avaya J-Series desk phone to a 3CX extension for use with CCaaS, either through the phone's keypad or its web GUI.
An Avaya J-Series phone registers to 3CX 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.
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# Preparing the Extension in 3CX
Before retrieving the phone's registration credentials, two extension-level settings need to be confirmed.
1. In the 3CX portal, navigate to `Extensions` and select the extension the phone registers to
2. Under the `Options` tab, confirm `Disallow use of extension outside of LAN` is disabled
3. Under the same tab's `Troubleshooting` section, confirm `PBX Delivers Audio` is enabled
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# Retrieving SIP Credentials from 3CX
1. Select the `Phone Provisioning` tab
2. Under `Authentication`, note the SIP Extension and SIP Password — select the eye icon to reveal the password
### Same Credentials Used for SIP Extensions
These are the same credentials entered when registering the extension in CCaaS — see [SIP Extensions](https://guide.xima.cloud/docs/3cx-sip-extensions).
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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:
| Field | Value |
| ------------------- | ----------------------------------------------------------------------- |
| SIP Domain | The SIP Server Host used for [Target Platform](https://guide.xima.cloud/docs/3cx-target-platform) |
| Registration Policy | `Simultaneous` |
| Failback Policy | `Admin` |
| SIP Proxy Policy | `Manual` |
| User ID Field | Toggled on — required for 3CX |
4. Save and exit `SIP Global Settings`
5. Resolve the SIP Server Host used for Target Platform to an IP address by running `tracert ` (excluding the port) from a command line, and note the top-most resolved IP
6. Select `SIP Proxy List`, then select `New`, and enter the resolved IP address with Protocol set to `TCP` and the SIP Port set to the value used for Target Platform
### Entering the IP Address on the Keypad
When entering a numeric address using the phone's keypad, the `*` button types the period (`.`) between number groups.
7. Return to the phone's main screen — it prompts for the SIP Extension and SIP Password obtained above
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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://` 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 resolved IP address under `SIP Proxy List`.
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# Registration Interval
### Change the Default Registration Interval
Avaya J-Series phones default to a 900-second Registration Interval, which does not work reliably with CCaaS. Change this value to `60` in the SIP settings, using either the keypad or the web GUI.
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# Registering the Extension in CCaaS
Once the phone is registered to 3CX, its SIP credentials are entered in CCaaS the same way as any other extension — see [SIP Extensions](https://guide.xima.cloud/docs/3cx-sip-extensions).