[SIPForum-discussion] FAX Issue in VoIP

[mohit kumar]

Murli,

When fax disconnects where do receive  BYE from? If it its from  FreeSwitch
then you need to check if you have set your FS to disconnect call  in case
of no audio from one side.

Thanks,

Mohit
On Fri, Sep 10, 2010 at 11:56 AM, murali shankar <murali.elangovan at gmail.com
> wrote:

> 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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>>
>>
>
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