How to Configure Your Grandstream Phone (GPX21(20,30,40)

Locate IP Address
Configure the phone via Web interface
Network Settings
Basic Settings
Audio Settings

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This manual will help you configure your Grandstream phone for use with Freedom, our cloud-hosted PBX.

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This configuration is based on the Grandstream GXP1625. Depending on the Grandstream type and the software version, it may look slightly different

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Connect the Grandstream device to the network (modem/router/switch/network point) using an Ethernet cable (ensure that your PC is connected to the same network as the Grandstream device)

Locate IP Address

Press the Menu button to go into the menu of the phone.
Press the down arrow button to “Status” and press the menu button to see the IP address

Configure the phone via Web interface

Type the IP address on the screen of your Grandstream into your browser.
Log in with the standard password "admin " and then click on Settings.

Setting up a VoIP account

Click on 'Accounts'.
Select 'General Settings' under Account
Copy the settings from the screenshots below.
Enter the account ID of your VoIP account at " SIP User ID " and " Authentication ID ".
Click Save and Apply.

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What you will need

Account Name: Extension number i.e 201

SIP Server/ Outbound Proxy: sip.voys.co.za

Display name: Extension number i.e 201

Authentication Username: Account ID e.g 20112345795

(Can be found on Freedom under Admin >> VoIP Account )

Password: e.g CffhPXaUhNdnsYp

(This can be found on Freedom under Admin >> VoIP Account)

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Settings on the Grandstream

Go to the 'Accounts' tab
Select the 'Account' you would like to configure, i.e. Account 1 or Account
Go to 'General Settings'.
Click Save and Apply.

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Network Settings

Fill in the details as displayed below
Click Save and Apply. If the 'DNS Mode': SRV doesn't work, select NAPTR/SRV.
Click Save and Apply.

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Basic Settings

Fill in the details below.
Ensure that each phone on your network is assigned a unique 'Local SIP Port'. For instance 5071 for extension 201, 5072 for extension 202 etc.
Click Save and Apply.

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Audio Settings

Select PCMA for every 'choice'.
Click Save and Apply.

You're done! The telephone icon on the top left-hand side of your screen should now turn green. This means that your phone is configured.