Re: GT Routing with NULL(H'0000) PC

???,

??? wrote:                                                                             (Mon, 05 Mar 2007 21:40:49)
> Thanks again.
> I confused with "RFC 3868 / 3.10.2.2.  Address Indicator".
> " For example, the PC
>    parameter is present in the destination address of the CLDT sent from
>    ASP->SG, but bit 2 is set to "0" meaning "do not populate this in the
>    SCCP called party address".  The effect is that the SG only uses the
>    PC to populate the MTP routing label DPC field, but does not include
>    it in the SCCP called party address."
> 
> According to this example, wrong PC value can cause wrong MTP routing.

That assumes that the SG itself does not perform GT.

> But I thought that SG may discard this PC value when SG cannot find right route. Am I right?

As I said, the SG is welcome to perform routing based on GT and come up with a
new PC.

--brian

> 
> Addition to last question, the SG engineer told me that some error messages logged on SG when that message (0 PC valued) came (but I have not received the exact error message)
> 
> 
> -----Original Message-----
> From: Brian F. G. Bidulock [mailto:[email protected]] 
> Sent: Monday, March 05, 2007 9:14 PM
> To: 권도형
> Cc: [email protected]
> Subject: Re: [Sigtran] GT Routing with NULL(H'0000) PC
> 
> ±ÇµµÇü,
> 
> ±ÇµµÇü wrote:                                                                       (Mon, 05 Mar 2007 21:06:28)
> > Dear, Sir
> > When the following message came to SG, SG can route this message?
> > 
> > Sending CLDT Message from ASP to SG (SUA Layer)
> > Destination Address is composed of these parameters.
> > ---
> > Destination Address
> > 	+Route Indicator : Route on Global Title (1)
> > 	+Address Indicator
> > 		- Include GT : True
> > 		- Include PC : False
> 
> It does not really matter what the PC is, with (Include PC : False) it will
> not be included in the resulting SCCP message.  The SG is welcome to route the
> message on global title.
> 
> It would be better form to not include the PC parameter in the message, but
> the SG can be forgiving if it wants.
> 
> --brian
> 
> > 		- Include SSN : True
> > 	+Global Title
> > 		- ???????????? (Some Value) (skip detail)
> > 	+Subsystem number
> > 		- ? (Some Value) (skip detail)
> > 	+Point code
> > 		- Parameter Tag: Point Code (0x8002)
> > 		- Parameter Length: 8
> > 		- Point code: 0 (0x00 00 00 00) <- the focus is this
> > 
> > The GT and SSN value is correct.
> > ---
> > 
> > I know that the PC value cannot be 0.
> > But with our test results, in some cases, SG can route these messages (with 0 PC included) to the right Destination.
> > Is these
> > Is that message perfectly wrong?
> > 
> > Ps: Thank you very much Brian F. G. Bidulock.
> > 
> > 
> > _______________________________________________
> > Sigtran mailing list
> > [email protected]
> > https://www1.ietf.org/mailman/listinfo/sigtran
> 
> -- 
> Brian F. G. Bidulock
> [email protected]
> http://www.openss7.org/

-- 
Brian F. G. Bidulock
[email protected]
http://www.openss7.org/