What do you know about ITU-T.38 (VoIP)

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  • fausto1981
    IT Technician

    100+ Posts
    • Dec 2007
    • 146
    #1

    What do you know about ITU-T.38 (VoIP)

    What can you tell me about ITU-T T.38 specifically for Ricoh machines.

    I've been reading some stuff online but nobody tells me if it works great.
    Some of my customers would like to know if that is a good idea but I just know that VoIP faxing consumes a lot of the bandwidth on the network.

    Please tell what you think about this

    Thanks
    Last edited by fausto1981; 06-19-2008, 05:09 PM.
    Tags: fax, int, itut38, sip, understanding, voip
    • unisys12
      Trusted Tech

      250+ Posts
      • Jul 2007
      • 490
      #2
      Just for research purposes... because I know fausto1981 has seen this... probably.

      T.38 - Wikipedia, the free encyclopedia - in depth info on the standard
      RFC 4612 - Real-Time Facsimile (T.38) - audio/t38 MIME Sub-type Registration - Ricoh paper on the specification, in HTML format

      I had a customer the other day that was having problems with their analog line, for a Savin 9016, and I suggested to their VOIP support team that we use the machines IP-FAX features to overcome this and they were stunned that our machine could do this. They said that they would try to fix the line first, but in the future would keep this in mind if the need arose again.

      Be careful though, because the older Ricoh machines that use this feature use it as E-mail. So it may not work for everyone! Basically, it takes a fax that you are sending and turns it into a an e-mail and sends it to a fax machine that supports this spec that reconverts it into fax. From my understanding, the more recent MFP's actually utilize the VOIP standard (using the SIP IP's and such) and truly works within the confines of the system. This might be why so many people feel that Fax over IP is about as reliable as a baby on crack!
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        • fausto1981
          IT Technician

          100+ Posts
          • Dec 2007
          • 146
          #3
          Thanks Unisys12,

          I have been reading and looking for more info about this T.38 recommendation, of course my first choice was Wiki, they have some good info, then my friend gave me another link from ITU that actually gives me everything about it. check it out
          T.38 : Procedures for real-time Group 3 facsimile communication over IP networks
          http://www.itu.int/rec/T-REC-T.38/e
          T.38,T38,ITU-T Recommendations,ITU-T,recommendation,ITU


          Last edited by fausto1981; 06-22-2008, 03:02 AM.

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            • fabant
              #4
              fax and voip

              maybe this link will help www.soft-switch.org Faxing over ip networks. we have tried this setup on BH c353 connected with Cisco ATA 186 . but there is a lot communiction problems .

                Comment

                • fausto1981
                  IT Technician

                  100+ Posts
                  • Dec 2007
                  • 146
                  #5
                  Thanks Fabant,

                  I just took a quick look at that link and it has tons of info specially on the notes for T.38 and FoIP.

                  I will check it out later,

                  Thank you very much for all your support guys...

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