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Fax Server Woes

Discussion in '3CX Phone System - General' started by beaterku, Dec 20, 2011.

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  1. beaterku

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    Good morning all,

    I am having a small anomaly with the fax server. While I was out on vacation last week, the fax server started acting up. It would answer my fax line as usual, according to the log, would connect the line to my fax extension, fax extension takes over, does it thing and it would send an email with the fax as a pdf attachment. The problem I am having is it is only sending the top portion of the first page of the fax, or it compresses the whole fax down to a 1" strip, or it sends a garbled image. Nothing has changed in the configuration.

    EDIT: I should not that we did move offices. We went from a cable connection to a T1 connection. This all happened two weeks ago. The first week on the T1, we were receiving faxes flawlessly. Nothing has changed on the configuration on either the 3cx or Grandstream 4104. I am lost. I have rebooted everything, tries setting 3cx to email the fax to a different email address, and it still sends a garbles fax.

    Does anyone have any ideas?

    Thanks!
    Nick
     
  2. beaterku

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    A basic log. This is when I tried to send the fax to the email of my extension to test.

    Code:
    10:35:31.432  [CM503008]: Call(9): Call is terminated
    10:35:09.155  Currently active calls - 1: [9]
    10:34:38.938  Currently active calls - 1: [9]
    10:34:37.113  [CM503007]: Call(9): Device joined: sip:888@192.168.1.141:5100;user=phone
    10:34:37.113  [CM503007]: Call(9): Device joined: sip:10004@192.168.1.142:5066;transport=udp
    10:34:37.097  [CM503002]: Call(9): Alerting sip:888@192.168.1.141:5100;user=phone
    10:34:37.050  [CM503025]: Call(9): Calling @[Dev:sip:888@192.168.1.141:5100;user=phone]
    10:34:37.019  [CM503004]: Call(9): Route 1: @[Dev:sip:888@192.168.1.141:5100;user=phone]
    10:34:37.019  [CM503010]: Making route(s) to <sip:102@192.168.1.141:5060;user=fax>
    10:34:37.003  [CM505002]: Gateway:[Grandstream_GXW4104] Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [Grandstream GXW4104 (HW 1.0, Ch:3) 1.3.4.10] PBX contact: [sip:10004@192.168.1.141:5060]
    10:34:37.003  [CM503001]: Call(9): Incoming call from 8009806858@(Ln.10004@Grandstream_GXW4104) to <sip:102@192.168.1.141:5060;user=fax>
    10:34:36.988  [CM503012]: Inbound office hours rule (unnamed) for 10004 forwards to Fax:102
    
     
  3. beaterku

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    Here is a verbose log of an incoming fax set to send to the fax extension.

    Code:
    10:53:32.772  [CM503008]: Call(6): Call is terminated
    10:53:08.935  Currently active calls - 1: [6]
    10:52:42.883  Remote SDP is set for legC:6.1
    10:52:42.774  Remote SDP is set for legC:6.2
    10:52:41.307  Session 373 of leg C:6.1 is confirmed
    10:52:41.292  [CM503007]: Call(6): Device joined: sip:888@192.168.1.141:5100;user=phone
    10:52:41.292  [CM503007]: Call(6): Device joined: sip:10004@192.168.1.142:5066;transport=udp
    10:52:41.292  [MS210007] C:6.1:Answer provided. Connection(by pass mode): 192.168.1.141:10002(10003)
    10:52:41.292  [MS210001] C:6.2:Answer received. RTP connection[unsecure]: 192.168.1.141:10002(10003)
    10:52:41.292  Remote SDP is set for legC:6.2
    10:52:41.292  [CM503002]: Call(6): Alerting sip:888@192.168.1.141:5100;user=phone
    10:52:41.214  [CM504001]: Ext.106: new contact is registered. Contact(s): [sip:106@192.168.1.156:5060;transport=udp;line=ptqgkp/106]
    10:52:41.089  [CM503025]: Call(6): Calling @[Dev:sip:888@192.168.1.141:5100;user=phone]
    10:52:41.089  [MS210006] C:6.2:Offer provided. Connection(by pass mode): 192.168.1.142:5012(5013)
    10:52:41.042  [CM503004]: Call(6): Route 1: @[Dev:sip:888@192.168.1.141:5100;user=phone]
    10:52:41.042  [CM503010]: Making route(s) to <sip:888@192.168.1.141:5060;user=fax>
    10:52:41.042  [MS210000] C:6.1:Offer received. RTP connection: 192.168.1.142:5012(5013)
    10:52:41.042  Remote SDP is set for legC:6.1
    10:52:41.042  [CM505002]: Gateway:[Grandstream_GXW4104] Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [Grandstream GXW4104 (HW 1.0, Ch:2) 1.3.4.10] PBX contact: [sip:10004@192.168.1.141:5060]
    10:52:41.042  [CM503001]: Call(6): Incoming call from 8009806858@(Ln.10004@Grandstream_GXW4104) to <sip:888@192.168.1.141:5060;user=fax>
    10:52:41.027  [CM503012]: Inbound office hours rule (unnamed) for 10004 forwards to Fax:888
    10:52:41.027  Looking for inbound target: called=10001+; caller=8009806858
    10:52:41.027  [CM500002]: Info on incoming INVITE:
      INVITE sip:10001+@192.168.1.141 SIP/2.0
      Via: SIP/2.0/UDP 192.168.1.142:5066;branch=z9hG4bKe142339071269b51
      Max-Forwards: 70
      Contact: <sip:10004@192.168.1.142:5066;transport=udp>
      To: <sip:10001+@192.168.1.141>
      From: "TOLL FREE CALL"<sip:8009806858@192.168.1.141>;tag=1255ff65d96188c4
      Call-ID: 44a17514e850a25737c51e21cd648c12@192.168.1.142
      CSeq: 6391 INVITE
      Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, INFO, SUBSCRIBE, UPDATE, PRACK
      Proxy-Authorization: Digest username="10004",realm="3CXPhoneSystem",algorithm=MD5,uri="sip:10001+@192.168.1.141",nonce="414d535c05014e5836:5f8f46fbf5c9d5473ab2ad860d5c92fd",response="ec8a4269c2c5804269c588d11c37d125"
      Supported: replaces, timer, path
      User-Agent: Grandstream GXW4104 (HW 1.0, Ch:2) 1.3.4.10
      Content-Length: 0
     

    Attached Files:

  4. beaterku

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    Does anyone have any ideas?

    Thanks!
    Nick
     
  5. misstake2012

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    Hi.
    I think the problem with grandstream 4104.
    Try to upgrade firmware to latest version and reboot the device.
    If it not help you find new device I try send fax via it.

    Firmware you can find here:
    http://www.grandstream.com/support/firmware
     
  6. beaterku

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    I checked the firmware version on my gateway and it us running the current version. I went ahead and reloaded the most current. It is still not working correctly. As I look back, it looks like the problem started when I moved the PBX to the new office. It looks like the first few faxes were hit and miss with regard to receiving the complete fax in pdf form.

    One thing that I did not mention was the fact that were switch from regular old PSTN lines to PSTN lines coming in via a T1 connection. Could this have something to do with the problem I am seeing?

    For reference, I am running V9 with the current service packs, Grandstream 4104 with current firmware. Upgrading to V10 is in the future when I can find some downtime to do the upgrade.

    Thank you much!
     
  7. leejor

    leejor Well-Known Member

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    Something involved with this migration to T1 is most likely the reason you are having problems.

    Things don't usually start going "bad" for no reason, it's usually the result of a change we have made to the system, and this is a pretty big change. There may be an incompatibility in the settings (ESF/SF/B8ZS ?) of the gateway or something in the way the T1's have been set-up. It might be something, that while not noticeable in a voice call, is affecting your faxes.

    There is also the possibility that the telco equipment involved in getting the T1 to you, is having problems, as you say that it did work for a short while. They may have to come out and run some tests to determine that there are no errors or slips on your T1.
     
  8. beaterku

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    I believe you are right. When I plug in my old fax machine, it will receive faxes correctly with no problems. I think you are on to something with regard to compatibility of the T1 box and the Grandstream gateway. Since I am relatively new to the PBX scene, what settings in the Grandstream should I be investigating?

    Thanks!
     
  9. leejor

    leejor Well-Known Member

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    Having never used that gateway, I'm at a loss to help you with specifics. I'm sure that there are a number of people on this forum that have had experience with that particular Grandstream. There are also resources on-line if you do some searching. T1 offerings from different providers can vary, so, it's not "one shoe fits all", when it comes to the settings. All of your settings might correct for the service that you ordered, it might be the other end that is having an issue (settings changed/bad equipment/service order change, noisy T1) too, something to keep in mind before you pull out all of your hair.
     
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