Plug your Grandstream GXP2000 into the LAN and obtain the phone’s IP Address as follows:
—You will see the IP address of the phone across the bottom of the LCD display.
—Make a note of this IP address. Open a Browser and enter type this address:
http://IP_address ( using the IP address from step 1) you should see the login screen.
Type in the default password admin and press Login.
You should now be presented with the Advanced Settings Screen. Set:- Admin Password to a personal value. This is important if the phone is on a public IP range.
If you have more than one GXP2000 phones on the same network you will need to set the local RTP port setting to a unique number for each of the phones. The default for this setting is 5004.
The next step is to setup the SIP accounts. Select ACCOUNT 1
Enter VoIP Advantage in Account Name.
Set the SIP Server to the registration server name you will have been advised to use in your welcome email (this will look like sip.voipadvantage.co.uk or lon-pbx-n.voipadvantage.co.uk) and set the port number to 5060 .
Set the SIP Outbound Server Domain Name as you will have been advised to use in your welcome email (this will look like natproxy.voipadvantage.co.uk) and set the port number to 5082 .
Enter your SIP User ID and Authentication ID, both of which are your VoIP extension ( nnnnnnn ), and your password, which is specified in your confirmation email.
Enter the name you wish to be displayed on phones which accept CLI text.
Set Use DNS SRV to NO
Set User ID is phone number to NO
Set SIP Registration to YES
Set Unregister On Reboot to NO
Set NAT Traversal (STUN) to YES
Set SUBSCRIBE for MWI to NO Set Send DTMF to via RTP (RC2833) this is necessary to make sure your phone uses the correct tones when sending key presses to the called party. If you intend to use multiple Grandstream adaptors/telephones behind a Nat Firewall you will need to give each adaptor/Phone a unique SIP Port.
For example if you had two Grandstream adaptors/telephones the the first would be assigned port 5060 and the second 5061.
Finally you will need to set the Audio Codecs order that the phone uses. We recomend you set your phone as follows.
Grandstream Codec Order Screenshot
Click UPDATE at the bottom of the configuration page.Click REBOOT. Make sure you click UPDATE before REBOOT to make sure your changes are implemented correctly.
