Dismiss Notice
We would like to remind you that we’re updating our login process for all 3CX forums whereby you will be able to login with the same credentials you use for the Partner or Customer Portal. Click here to read more.

Allow fax over WAN

Discussion in 'Ideas' started by CCAdmin, Mar 15, 2018.

Allow fax over WAN 5 5 14votes
5/5, 14 votes

  1. CCAdmin

    Joined:
    Feb 13, 2013
    Messages:
    67
    Likes Received:
    8
    I recently battled with getting my 4114 working on the newest v15.5.
    One thing I found was that you are blocking FAX extensions over the WAN.

    With more and more people moving to hosted PBX solutions, it makes no sense
    to block anything over the WAN and not at least give a way to unblock it.

    I had FAX extensions assigned to the 4114 and was getting the error "SIP request (REGISTER) from {my.internet.IP} was rejected. Reason: Block WAN requests is ON". I changed the extension from a FAX to a normal user extension, unchecked the 'disallow use...outside the LAN' box, and it started working finally.

    We need to be able to use FAX extensions over the WAN as well.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    Alroger Gomes Jr, Lev and craigreilly like this.
  2. joec

    Joined:
    Feb 23, 2018
    Messages:
    6
    Likes Received:
    0
    I would also like to know how to do this. What fax server software are you using?
     
  3. Lev

    Lev New Member

    Joined:
    Sep 19, 2015
    Messages:
    122
    Likes Received:
    18
    Alroger Gomes Jr likes this.
  4. craigreilly

    craigreilly Well-Known Member

    Joined:
    Feb 1, 2012
    Messages:
    3,551
    Likes Received:
    298
    He is asking about 3cx Fax Extensions using ATA. So in this case, no Fax Server.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  5. Alroger Gomes Jr

    Joined:
    Jan 19, 2018
    Messages:
    8
    Likes Received:
    3
    +1 here as well

    We just sold our first 3CX solution and now have this to stumble upon.
    We could just use a regular extension for connecting the ATA from outside the LAN, but it seems that this way there is no option of FAX pass-through, and it defaults to T.38 which our SIP Trunk doesn't have.

    Ohhhh boy.

    UPDATE: The extension Option PBX Delivers Audio seems to help. I have to try sending faxes now.
     
    #5 Alroger Gomes Jr, Jun 22, 2018
    Last edited: Jun 22, 2018
  6. Alroger Gomes Jr

    Joined:
    Jan 19, 2018
    Messages:
    8
    Likes Received:
    3
    I take it all back.
    Seems to work fine using FXS/DECT (I used the supported Welltech from the list although I'm using a Grandstream HT802, just need to enter sip server, user and password to configure both FXS ports) and a regular extension with Pass-through FAX and specifying the FQDN as the network interface in the extension's phone provisioning.
     
  7. Lev

    Lev New Member

    Joined:
    Sep 19, 2015
    Messages:
    122
    Likes Received:
    18
    I might also try that one out, if i find some sparetime.
    But it is still just a workaround.
     
  8. Maykel Constantin

    Joined:
    May 25, 2018
    Messages:
    32
    Likes Received:
    0
    how can you setup the HT802 to the 3cx please can you help me ?
     
  9. Alroger Gomes Jr

    Joined:
    Jan 19, 2018
    Messages:
    8
    Likes Received:
    3
    I described exactly what I did! And now 3CX supports the HT802 (new update today).
     
  10. Maykel Constantin

    Joined:
    May 25, 2018
    Messages:
    32
    Likes Received:
    0
    i know but cant download the .xml file 3cx never create the file.. so i cant download it..
     
  11. Alroger Gomes Jr

    Joined:
    Jan 19, 2018
    Messages:
    8
    Likes Received:
    3
    I didn't download anything. It's already in 3CX.
     
  12. Maykel Constantin

    Joined:
    May 25, 2018
    Messages:
    32
    Likes Received:
    0
  13. craigreilly

    craigreilly Well-Known Member

    Joined:
    Feb 1, 2012
    Messages:
    3,551
    Likes Received:
    298
    If the link to the config file is not working from step 7.3 then you may have bigger issues.
    You do not mention 3cx on same LAN or Cloud.... that would be a big consideration here.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  14. Maykel Constantin

    Joined:
    May 25, 2018
    Messages:
    32
    Likes Received:
    0
    Cloud, not on the same LAN when i try to save the file i get:
    403 Forbidden
    nginx
     
  15. craigreilly

    craigreilly Well-Known Member

    Joined:
    Feb 1, 2012
    Messages:
    3,551
    Likes Received:
    298
    https vs http ? usually that is a 403 error.
    We do not know what your link looks like - public or private...
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  16. Bronston Hansen

    Joined:
    Jul 24, 2018
    Messages:
    26
    Likes Received:
    0
    Can you clarify this part: "and a regular extension with Pass-through FAX" for me?

    Unfortunately fax is a necessity for my organization and suffice it to say it's a good thing a cloud server is intangible or violence would ensue.

    I've set my ht802's up a few different ways, my trunk does support t.38 so I've tried that and it worked great unless you needed to send a fax, as far as I could tell the phone extension bypasses the FXS/DECT extension on outbound so no T.38 makes it to the trunk.

    I've tried forcing PMCU which works ok usually but is inconsistent.

    And of course I've tried just FXS/DECT with t.38 but it's a cloud server so the useless un-killable no WAN connection rule breaks it.

    If nothing else it'd be great if we could lift all WAN related restrictions for any and all extensions if the originating IP is whitelisted, cause you know... it's whitelisted.