Can't Hear the caller - New User

[CrownSeven]

Please note a hub is not a switch and a switch is not a hub, but i agree...sounds like a port forwarding issue.

I agree with burris: modem ---> router --->devices.

Port forwarding issue? Maybe. But I'm encountering the same issue for the past few months and have done everything including port forwarding and setting the PAP in a DMZ and nothing has worked.

[JohnnyTooBad]

I'm having the same issue. Occasionally, when we make calls out of the house, the person we call can hear us, but we can't hear them. If we try a couple of times, it connects properly. Unfortunately, I am not as tech-savvy as a lot of VOIP users, so I'm not getting what a lot of you are talking about in this thread. For example, I don't know what "port forwarding" is.

Can you help a newb out? How do I fix this?

Thanks.
-John

[brmstech]

Ok, I put the Grandstream behind the router as suggested and forward UDP ports 5004-65000. Currently it seems to work. We'll see if it still works after a few days.