I hear them, they can't hear me

Discussion in '3CX Phone System - General' started by ndraves, Nov 20, 2009.

Thread Status:
Not open for further replies.
  1. ndraves

    Joined:
    Jul 22, 2007
    Messages:
    29
    Likes Received:
    0
    Hi. I have two Grandstream GXP-2000 phones. I'm using Skype for my service provider.

    When I get a call, I hear them just fine, but they can't hear me at all. Does anyone have any ideas?

    Thanks!
     
  2. leejor

    leejor Well-Known Member

    Joined:
    Jan 22, 2008
    Messages:
    10,848
    Likes Received:
    299
    It could be a number of things but I suspect that some ports aren't open. What sort of router/firewall are you using and what ports have you forwarded to the IP of the computer running 3CX? Have you followed the information available on the 3CX site?
     
  3. ndraves

    Joined:
    Jul 22, 2007
    Messages:
    29
    Likes Received:
    0
    At this point, I have the server on a public IP address, so all ports are open.
     
  4. Nick Galea

    Nick Galea Site Admin

    Joined:
    Jun 6, 2006
    Messages:
    1,934
    Likes Received:
    250
    This is a typical firewall / nat problem. Your server could be on a public IP but you could still be passing via a NAT device for the phone or even one located at the ISP that you are not aware of!
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  5. ndraves

    Joined:
    Jul 22, 2007
    Messages:
    29
    Likes Received:
    0
    Could it have something to do with Windows Internet Connection Sharing?
     
  6. aveiser@veiser.de

    Joined:
    Dec 23, 2008
    Messages:
    23
    Likes Received:
    0
    You should control proper setting of default gateway-ip on oll devices
     
  7. ndraves

    Joined:
    Jul 22, 2007
    Messages:
    29
    Likes Received:
    0
    The PBX is set to deliver audio in the PSTN settings.. The default gateway for both phones are set to the address of the NIC in the 3CX server for that subnet.

    Thanks for the suggestions, though.

    Any other ideas?
     
Thread Status:
Not open for further replies.