New 3CX install behind TMG - Phones wont Register - HELP!

Discussion in '3CX Phone System - General' started by gcannon, Mar 10, 2011.

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  1. gcannon

    Mar 10, 2011
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    I need some help.... PLEASE!

    This is a new installation for our offices and I am unable to get phones to register on 3CX.... so I am unable to get the system setup to even test the capabilties!.... I have been racking my brain for 4 days and have a 3CX partner even involved and cant figure it out. I have reinstalled TMG 3 times. PLEASE, PLEASE, PLEASE help if you can!!!

    SIP trunk provider - Broadvox (US)
    IP Phone - CISCO 7945G with SIP protocol 8-5-4
    Firewall - Microsoft TMG SP1 ( 7.0.9027.400); Windows 2008 R2 - Edge server setup
    3CX server - Windows 2008 R2 Virtual Machine (Windows Firewall tunred off)
    3CX Software - with all the latest updates
    TMG VoIP Config - Used Microsoft VoIP Configuration Wizard with defaults

    SERVERS:TMG, 3CX, AD (Active Directory) - All in the same domain
    DHCP and DNS running on AD server

    Internal IP Range - .255
    Static External IPs - - .109

    3CX INFO
    Port Trunk Status - GREEN - Registered - port trunk status.jpg
    Extension Status - RED - NOT REGISTERED - extension status.jpg
    System Extension Status - GREEN - REGISTERED - system Extension status.jpg
    Remote Connections - Registered - remote connections.jpg
    3CX Phones - phones.jpg
    3CX Services Status - Services Status.jpg
    3CX Firewall Checker - Firewall Checker.jpg (Doesnt explaing why phones wont register)

    Firewall Policy - firewall policy.jpg
    TMG Networks - networks.jpg
    TMG Network Rules - network rules.jpg
    TMG Network Adapters - network adapters.jpg
    TMG Routing - Routing.jpg

    Netowrk Diagrahm - Assistance 3CX Network Diagram.pdf
  2. abc123

    abc123 Active Member

    Nov 9, 2009
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    Re: New 3CX install behind TMG - Phones wont Register - HELP


    Thanks for the attachments it helps to see the full problem.

    You seem to have multiple problems and we need to resolve each one step by step.

    If you would like to PM me I can give you some information to allow us to remote into your system and help you with it.

    If possible we would like to include your current 3cx partner so we can assist each other.

    We have not worked with TMG server with a 3cx installation (have worked each individually) and so our support would be free of charge as we view it as a learning experience, with the caveat that we make no guarantees that we can fix it.

    Send me a pm if you want to proceed as I feel it will be a lot to try to explain in a forum post.
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