Elastix 1.5 don't received external FAX

Discussion in 'General' started by DMTG, Apr 18, 2009.

  1. DMTG

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    Hello,

    A few days installed elastix and still can not get to work to receive faxes (external) through a SIP server that supports T.38.
    Where elastix attempts to receive a fax is the following message "Dropping incompatible voice frame on SIP / +351 xxxxxxxx-format 09f741c0 of sLine since our native format has changed to 0x4 (ulaw), but I can send faxes without any problems and also I receive internal fax.
    Already setup nvfax, T38udpl.
    Can you help me?

    Thanks,
    Portuguese from Madeira Island
     
  2. dicko

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    I don't believe that Asterisk 1.4 (elastix) supports T38 natively, it will pass it through to a T38 fax machine/ata. as you have set it up.

    Does that help?
     
  3. DMTG

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    In this server
    https://94.124.57.17/
    login: demoadmin
    pass: palosanto

    I test my configuracion SIP and i can receive external fax in elastix system fax.
     
  4. dicko

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    given a decent network connection and a decent VOIP provider, using ulaw/alaw, In my experience faxes work 98%+ if you insist on T38 you will need hardware (fax or an ata connected to a traditional fax machine) that supports T38. (normally in the absense of T38 the fax will be negotiated back to g711)
     
  5. DMTG

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    Thanks for your help!
     

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