blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px 
#715FFA solid !important; padding-left:1ex !important; background-color:white 
!important; } Hi Rakesh,
I think if T38FaxRateManagementis not received or received with value other 
than "transferredTCF", it is treated as protocol error and releases the call.
Can you please let me know the entity that is releasing the call? Is the 
release from E/// core nodes?
Regards Sampat 


Sent from Yahoo Mail for iPhone


On Friday, June 9, 2017, 3:22 PM, Rakesh <rak...@gmail.com> wrote:

HI Jan/Expert,

Sorry.Tthis is the SDP in Successful,

t=0 0
m=image 52702 udptl t38
a=T38FaxVersion:0
a=T38MaxBitRate:9600
a=T38FaxRateManagement:transferredTCF
a=T38FaxMaxBuffer:200
a=T38FaxUdpEC:t38UDPRedundancy



And in Unsuccessful case,

t=0 0
m=image 50040 udptl t38
a=T38FaxVersion:0


*BR///*

*Rakesh Kumar Mohanty*

On Thu, Jun 8, 2017 at 9:24 PM, Jan Bollen <jan.bol...@scarlet.be> wrote:

>
> Hi,
>
>  The "media attribute" image was apparently eliminated from the message,
> so I can't comment on it. Meanwhile, you might want to have a look at the
> free-of-chare T.38 standard at http://www.itu.int/rec/T-REC-T.38/en
>
> kind regards,
>  Jan
>
> On 8/06/2017 17:44, Rakesh wrote:
>
> Hi Expert,
>
> Is the below media attribute is mandatory for FAX t38 call?
>
> [image: Inline image 1]
>
> Any RFC to mentioned the FAX t38 standard call flow?
>
> I am getting  "488 not acceptable"  failure response while sending a fax
> INVITE with the media attribute is like below,
>
> [image: Inline image 2]
>
> *BR///*
>
> *Rakesh Kumar Mohanty*
>
>
>
>
> _______________________________________________
> Sip-implementors mailing 
> listsip-implement...@lists.cs.columbia.eduhttps://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
>
>
>
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