Sorry i'm confused... Is your Sipura device registering directly with Sangoma or a local freepbx server?
I'm guessing here that you have a FreePBX server that is registered with Sangoma (via a chan_sip trunk) and in turn the Sipura is registered against an extension on that FreePBX server, is that correct?
If so you need to add or modify the port in the trunk configuration on the FreePBX server as follows:
It's the FreePBX server that registers with Sangoma not the Sipura device, the Sipura registers with your FreePBX server.
alex01 wrote:I am changing the port number in line configuration page for each line, I've looked but can't find anywhere that it can be changed globally.
There is no global setting on the Sipura, you need to individually change the port under the Line tab.
What model Sipura device are you using and what port is it currently set to use? If you want your Sipura to use port 5060 too then you need to also change the port on the extension it's registered against in FreePBX.