Grandstream GXP2xx Configuration Guide

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.

General Settings configuration example

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.

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