Cant access voip in some countrys

[robertkwild]

hi all,

lets say theres a country that cant access your voip server, would it make a difference if i enable SIP TCP aswell as SIP UDP under chan_sip?

ive changed the port, instead of 5160 its 51160 and that works as i can connect to my voip server on my mobile on mobile data

edit - ive tried different ports but the other person still cant access my voip server, even if he tries t change transport type from UDP to TCP

thanks,
rob