RE: ASP Capabilities value 0x2 of interworking field

Brian,

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]On
> Behalf Of Brian F. G. Bidulock
> Sent: Tuesday, December 20, 2005 1:56 PM
> To: Stanislav Ivanovich
> Cc: SIGTRAN
> Subject: Re: [Sigtran] ASP Capabilities value 0x2 of interworking field
>
>
> Stanislav,
>
> Stanislav Ivanovich wrote:
>                (Tue, 20 Dec 2005 10:22:59)
> >
> >    Tolga,
> >
> >
> >
> >    I agree with you.
> >
> >
> >
> >    I  noticed  that  I  made  mistake  in  my qustion addressed
> to you, I
> >    actually meant Appl1<->Appl3 as I correctly assumed.
> >
> >
> >
> >    In addition I would say that any relay based on MTP (SPC) or
> SCCP (GT)
> >    logic  should  always  be  covered  with SGP<->SGP
> communication model
> >    without  having  AS/RC  concept  used in between. In other
> words I see
> >    SG-SG  model  good  regardless  is  it  for  GT  based or
> SPC based or
> >    anything other...
> >
> >
> >
> >    When I looked into your SGP-SGP draft I forgot to propose
> maybe change
> >    of  terminology -> maybe other SIGTRAN community memebers
> are confused
> >    and  think that in this way it is relay "on the network
> edges" or that
> >    it  assumes  "gateway  functionality".  Actually  in the
> essence it is
> >    about  new role of the exisitng SGP process whihc is to
> relay not only
> >    between  SS7  and  IP but also IP to IP. This also implies
> new commun!
> >    ication  model  between  SGP-SGP since AS/RC concept is not
> to be used
> >    there.
>
> SGs, by definition in the consensus model, have SS7 interfaces.
[TOLGA]I have a different opinion here. It is obvious that the initial/main
purpose was to interface conventional SS7 networks -hence the "gateway" in
the name-, but OTOH conceptually what SGP provides is just hosting
corresponding SCCP(MTP3 for M3UA) layer for the applications on ASPs. As far
as I can see it really doesn't matter whether TDM based links or IP
transport is used to transfer bits and bytes.

You know that it has been agreed that the following, where SGP1 relays
between ASP1 and ASP2 is a valid configuration:

+------+       +------+
| ASP1 |       | ASP2 |
+--+---+       +---+--+
   |               |
   |    +------+   |
   +----+SGP1  +---+
        +------+
Actually, something more important than whether me,you or somebody else
thinks that it is valid is whether the protocol supports it. From SGP point
of view, conceptually it is irrelevant whether the destination is in IP
domain or in conventional SS7 domain.
>
> --brian
>
>
> --
> Brian F. G. Bidulock
> [email protected]
> http://www.openss7.org/
>
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