Re: Conceptual doubt between an ASP and SGP

David,

David Laight wrote:                         (Fri, 14 Mar 2014 11:02:08)
> > 
> > GTT does not alter the OPC of the original message.
> > 
> > Calling Party Address is only used to identify the caller for
> > transaction processing and is not used for reverse routing.
> > 
> > GTT can only exist at an intermediate node in the SS7 network
> > that has the transfer function.  That is the definition of
> > intermediate node in SS7.
> 
> You seem to be confusing the MTP3 STP functionality (which forwards
> messages based on the routing label - and doesn't modify the label)
> with SCCP forwarding based on GT lookup.
> If SCCP forwards a messages (with or without rewriting either GT)
> then MTP3 will put the local pointcode in the routing label.
> 
> SCCP can forward messages in a node that doesn't have MTP3 STP
> functionality. Indeed it can forward the message into an entirely
> different SS7 network. It could, for example, forward a message
> from an ITU network into an ANSI one (leaving you with ITU TCAP
> embedded in ANSI SCCP).


Not confused: read Q.714/2.7.5.

But you didn't answer my question: why would you want to mislabel it?

--brian

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