[SIPForum-discussion] FAX Issue in VoIP

[murali shankar]

Hi John,

The settings has not been set for high quality.below is the Fax machine
detail.


Make and model of  fax machine:



                1.    SAMSUNG - SCX-4521F

                2.    Panasonic - KX-FC613

                3.    Xerox - WorkCentre PE 220

Regards,
Murali Shankar


On Fri, Sep 10, 2010 at 4:52 PM, Garrity, John N. (Infrastructure Solutions
Dept.) <john.garrity at thehartford.com> wrote:

>  You may find that the FAX machine is set for high quality printing which
> may not be compatible with T38.
>
>  ------------------------------
> *From:* discussion-bounces at sipforum.org [mailto:
> discussion-bounces at sipforum.org] *On Behalf Of *Brent Shaw
> *Sent:* Thursday, September 09, 2010 2:14 PM
> *To:* murali shankar; discussion at sipforum.org
> *Subject:* Re: [SIPForum-discussion] FAX Issue in VoIP
>
>    The errors that you list make it look like you are not even getting a
> successful connection/negotiation. Do you actually connect, and then the
> failure occurs during transmission? If so, you might want to check the
> following settings:
>
>
>
> t38 max-bps rate *<value>*
>
> t38 max-buffer size (Had to adjust from default 200, to 262)
> t38 max-datagram (Had to adjust from default 72, to 176)
>
>
>
> Check the SDP offer when the T.38 session is initiated.
>
>
> Your default values may be different
>
>
>
> *Brent *
>
>
>
> *From:* discussion-bounces at sipforum.org [mailto:
> discussion-bounces at sipforum.org] *On Behalf Of *murali shankar
> *Sent:* Wednesday, September 08, 2010 8:28 PM
> *To:* discussion at sipforum.org
> *Subject:* [SIPForum-discussion] FAX Issue in VoIP
>
>
>
> Dear All,
>
>
>
>             Whenever am trying to send multiple pages in FAX over VoIP at a
> single attempt the FAX is getting failed .Whereas for the same number the
> FAX is going fine for single Paper.Can any one help me out?
>
>
>
> Voip Gateway: Free Switch PBX.
>
> Protocol: T.38
>
> Codec: G.729A & G.711U
>
> Baud rate: 9000 to 14400
>
>
>
> Errors:
>
> 1. Busy Signal Detected.
>
> 2.No response to pps repeated 3 times.
>
> 3.Failed to train remote modem at 2400 BPS or minimum speed.
>
>
>
>
>
> Please suggest.
>
>
>
> Regards,
>
> Murali
>
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