This article is intended to assist you with setting up port forwarding on your Grandsteam phone. Please read this guide if you need further help with port forwarding.
The steps below will need to be carried out prior to configuring your router.
Finding the IP address of your Grandstream Device
By default IP address of your Grandstream will be shown on the phones screen under your extension number. This is usually in the format of 192.168.1.10
Logging into the Device
Type the IP address of the phone into the top of your internet browser. For example 192.168.1.10
The phone will then prompt for a password.
Statically assigning the phone a IP address.
(It is important not to skip this step)
Once logged into the device, click on the Basic Settings tab at the top of the page. From here you will need to enter your network details. We have provided an example below.
Once you have entered these details, click on Update button at the bottom. The phone will prompt you to reboot.
Configuring the RTP port
Once the phone has been rebooted, click on the Advanced Settings tab at the top of the page. From here you will need to enter the local RTP port (by default this is set to 5004). If you have multiple phones then the ports will need to be staggered in intervals of two.
For example, the first phone would use port 5004 and the next phone would then use 5006, and so on. Please see this article for more help with this.
Configuring the SIP port
Click on the Account 1 tab at the top of the page (or which ever account the phone is programmed to use). You will now see the option local SIP port section. The default SIP port is 5060. If you have multiple phones you will need to stagger the SIP port for each phone in increments of two.
For example, the first phone would use port 5060 and the next phone would use port 5062 and so on.Please see this article for more help with this.
When you are done, click Update at the bottom of the page, and then Reboot.
Now your phone has been setup ready for port forwarding. Next you will need to configure the router to use the ports that you have specified on the phone and map these so that the traffic is passed to the IP address of the phone.
For more information on configuring port forwarding on your router, please read this article.