This article describes the configuration of most Grandstream GXP2xx series. The only difference would be the lack of some features or some extra features that don’t affect registration.
If the phone was previously used with another service provider, you may need to factory reset it before logging in.
Logging in
The default credentials for this phone are:
- Username: admin
- Password: admin
Once logged in, go to Accounts → Account
General Settings
Get your credentials here: Settings > Forwarding Numbers > Get connection details.
- Account Active: yes
- Account Name: can be anything
- SIP Server: SIP Domain from the connection details
- Outbound Proxy: Proxy from the connection details
- SIP User ID: SIP User Name from the connection details
- Authenticate ID: SIP Authorization ID from the webpanel
- Voice Mail ID: the phone’s extension number
Press the Save button when done.
Basic Settings
- TEL URI: Disabled
- SIP Registration: Yes
- Unregister on reboot: Instance
- Local SIP Port: 5060, 16060 or, for some models, 5xxx, where xxx are the last 3 digits of a phone’s extension.
- SIP Transport: UDP
- Register expiration: 5
- Reregister before expiration: 0
- Sip registration failure retry: 20
The rest should be as on the screenshot below.
Press the Save button when done.
Audio Settings
- Send DTMF: via RTP (RFC2833)
- Preferred Vocoder – choice 1: G.729A/B if the line’s primary codec is G.729; PCMU if the line’s primary codec is G.711
- Preferred Vocoder – choice 2: PCMU if the line’s secondary codec is G.711; G.729A/B if the line’s secondary codec is G.729
Press Save and Apply once configured.
After all these settings are good, the configuration is done. The phone will restart itself. Do not unplug the phone from the power while it's restarting. The phone may restart several times, do not interrupt this process.