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.

General Settings

Account Active: yes

Account Name: can be anything

SIP Server: SIP Domain from the webpanel

Outbound Proxy: Proxy from the webpanel

SIP User ID: SIP User Name from the webpanel

Authenticate ID: SIP Authorization ID from the webpanel

Voice Mail ID: the phone’s extension number

Press 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: 20The rest should be as on the screenshot below.

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

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.