Re: User Part Unavailable at ASP in M3UA

*Kuldeep,**
*
This might help you resolve ur doubt...*cause/user field of SCON *message.

Unavailability *Cause* field: 16-bits

0 Unknown
1 Unequipped Remote User
2 Inaccessible Remote User

MTP3-*User Identity* field: 16-bits

0 to 2 Reserved
*3 SCCP*
4 TUP
*5 ISUP*
6 to 8 Reserved
9 Broadband ISUP
10 Satellite ISUP
11 Reserved

12 AAL type 2 Signalling
13 Bearer Independent Call Control (BICC)
14 Gateway Control Protocol
15 Reserved


*Rgrds,
-Mahantesh*


On 12/18/06, Kuldeep Janjua <[email protected]> wrote:
>
> Hi Mahantesh,
>
> I agree with you that SCON message can be sent from ASP when user part
> becomes unavailable because of congestion ( SCON as per defination is for
> congestion ).
> So it (ASP) again do not cater to the case "User Uneqipped" .
>
>
> Regards,
> Kuldeep
> C-DOT India.
>
>
>
>
> On 12/18/06, Mahantesh <[email protected]> wrote:
> >
> > Hi *Kuldeep,*
> > **
> > If u look at SS7 side, the MTP-STATUS message equivalent at IP side is
> > SCON or DUPU or DAUD.
> > But certain fields, which may be OPTIONAL, decide the waht actiion to
> > take.
> > From ASP the a SCON message is sent to SGP in case of UP unavailability.
> > SCON's optional field "*Concerned Destination: 32-bits" *helps at the
> > other end about unavailability.
> >
> > *Rgrds,
> > -Mahantesh*
> >
> > On 12/18/06, Kuldeep Janjua <[email protected] > wrote:
> >
> > > Brian,
> > > In RFC 3332 section 3.4.5 "Destination User Part Unavailable (DUPU)
> > > The DUPU message is used by an SGP to inform concerned ASPs that a
> > > remote peer MTP3-User Part ( e.g., ISUP or SCCP) at an SS7 node is
> > > unavailable." is said that DUPU is sent by an SGP to ASP in case SG receives
> > > UPU from SS7 Point Code.
> > >
> > > I want to know which message is sent by the ASP in case it detects the
> > > user part unavailability?
> > >
> > > Regards,
> > > Kuldeep
> > > C-DOT India.
> > >
> > >
> > > _______________________________________________
> > > Sigtran mailing list
> > > [email protected]
> > > https://www1.ietf.org/mailman/listinfo/sigtran
> > >
> > >
> > >
> >
> >
> > --
> >
>
>


--

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