Change from 5060 to 1024

Hi!

Sorry if I am doing a stupid question…

I have two phones behind the same router. Both phones are registered in Asterisk.
When I make a call between them, there isn’t audio.

I saw a change of port in the capture from 5060 to 1024.

Could be this the audio problem? is this a normal thing?

thanks! and again: sorry for my question!

could you be seeing the RTP port connection? I am not sure why the UA would switch ports mid-stream.