RE: ASP Capabilities value 0x2 of interworking field

Brian,

> -----Original Message-----
> From: Brian F. G. Bidulock [mailto:[email protected]]
> Sent: Tuesday, December 20, 2005 9:25 AM
> To: Tolga Asveren
> Cc: [email protected]
> Subject: Re: [Sigtran] ASP Capabilities value 0x2 of interworking field
>
>
> Tolga,
>
> Tolga Asveren wrote:
>    (Tue, 20 Dec 2005 08:46:56)
> > > > [TOLGA]SGPs.
> > > Placing GTT at the edge of the network is not practical.
> > [TOLGA]At least we agree that SUA SG can act as relay. I
> disagree with you
> > that you consider SG at the edge of the network. This is not
> mandatory by
> > protocol. You can have them whereever you want and with relaying support
> > they perform what you want to achieve: allowing easier management of the
> > network. That is the idea why there is relaying support defined for SGs.
>
> Interconnect is not done at the core of the network.  GTT is.  No self
> respecting SS7 network operator would connect your SUA junk to their
> primary STPs any day soon.  Lot's o' luck.
[TOLGA]I think you also agree that there is a need to organize networks
hierachicaly and for that reason we need relaying. That hierarchical
organization can depoend on different SS7 constructs depending on the needs
of the operator, e.g. GTT, and entities supporting relay can be deployed
anywhere in the network again depending on the needs.
>
> > > > [TOLGA]A SGP does not need to have SS7 interface. You put it
> > > there, if you
> > > > need to acces conventional SS7 network.
> > > So in M3UA what is an SGP with no SS7 interface?  An IPSP
> that supports
> > > relaying?
> > [TOLGA]No, still an SG. IPSP is a direct, peer-to-peer
> relationship between
> > two applications. SG-SG is a peer-to-peer relationship between
> two relaying
> > agents. Whether they relay to a node in conventional SS7
> network, to another
> > IP entity or to a local application is conceptually not important.
>
> SUA already has this concept.  Any element can be a relay within the IP or
> SS7 domains.
>
> Only M3UA needs the SG-SG concept because currently only an SG
> can relay, and
> now only within the SS7 domain.
>
> For M3UA, however, providing relay within the IP domain is
> pointless.  Each
> originator knows the address of the final destination and might
> as well form
> an association with and send it there directly.  M3UA relays
> accomplish nothing
> more than an IP router already aptly acheives.
[TOLGA]I disagree with you. It allows hierarchical organization/easier
configuration of the network and also backhauling SS7 traffic over IP. If
you look to other IP based protocols, which are supposed to be used between
core network entities, you will see similar capabilities as well, e.g.
Diameter. Probably, I should quote one of your favorites: "If you don't want
it, do not use it"
>
> --brian
>
> --
> Brian F. G. Bidulock
> [email protected]
> http://www.openss7.org/
>