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  1. T38 VoIP Provider inbound Fax Problem

    Problem solved, please close. Provider changed their Invite parameters to allow only TCP... everything works now.

  2. T38 VoIP Provider inbound Fax Problem

    Hello Everyone, I have the licensed version of 3CX, and till yesterday everything was working like a charm :) ... then, the requirement to receive faxes to email came into the picture. I have the default Fax Server ext. 888 configured with a DID, and was testing to see if I can receive faxes...

  3. New 3CX system Install... I am stuck :)

    Hey all... OK... so, Eureka! :D It turns out that everything I had was configured properly, but... the free version of the 3CX softphone does not have the G.729 codec. And, the SIP trunk provider is disabling all of the other audio codecs by default (bandwidth usage concerns in SA). So, as...

  4. New 3CX system Install... I am stuck :)

    Hey Orlin, Of course your comments help, and I thank you again for the effort! I went only as far as 9015, as that should be enough for now... Public IP is PPPoE... you are correct! But, it has a "reserved" feature on it, and it did not change in 2+ years :) The second Default Route is just for...

  5. New 3CX system Install... I am stuck :)

    Hey Orlin, Thanks again for the helping hand! 1. Firewall checker: 3CX Firewall Checker, v1.0. Copyright (C) 3CX Ltd. All rights reserved. <16:26:04>: Phase 1, checking servers connection, please wait... <16:26:04>: Stun Checker service is reachable. Phase 1 check passed. <16:26:04>: Phase...

  6. New 3CX system Install... I am stuck :)

    Thanks again for your help! So, I will start from the top: - I have the 3CX system on the same LAN as the router - STUN disabled and using the Public IP - Router config is attached - Also NAT'ing to the Public for the rest of the devices - 1 Provider, and it registers just fine (green status)...

  7. New 3CX system Install... I am stuck :)

    Thank you for your reply...I went ahead and turned off the ALG (SIP) feature on the Cisco 871, and the result was the same as above... the Ports are correctly mapped through the Router (static NAT for all that you have enumerated), as the FW checker (above) shows. I have also tried disabling the...

  8. New 3CX system Install... I am stuck :)

    Thank you for your reply... Yes, I have one server in this office (no fire/wall, and AV disabled) and a Cisco 871... this is directly connected to the Internet/ISP... The VoIP provider is from South Africa (switchtel.co.za), and I am trying to setup this SIP trunk connection for people in CH to...

  9. New 3CX system Install... I am stuck :)

    Hey David, Thanks for your reply! So, I see the error you are talking about, but I have no FW enabled on the server that hosts the 3CX system... and, I am passing the FW checker with flying colors :) Also, I have double-checked the configuration of the Extension 101... no Out of Office rule is...

  10. New 3CX system Install... I am stuck :)

    Good Morning Gents, So, I am quite new at this and got stuck after successfully configuring my router/firewall to properly pass the VoIP traffic... Please see below the capture from the firewall checker, and the Server logs... The SIP trunk registers just fine. I am not able to dial out from...
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