Re: ASP Capabilities value 0x2 of interworking field

Stanislav,

Stanislav Ivanovich wrote:                                       (Tue, 20 Dec 2005 07:44:05)
> 
> 
>    However  the  essential  point  is  that  the  AS/RC concepts which is
>    symmetrical  one (at least in SE model) is not suitable to perform the
>    relay.
> 
>    Traditi!  onal  SS7  networks (MTP and SCCP) are asymmetrical in sense
>    that they do not care where the message originated but where it has to
>    be delivered.

Yah. SS7 links are uni-directional.

> 
>    In  xxUA networks AS/RC concept in mandatory SE model both originating
>    and   destination   addresses   have   to   be   specified   and  only
>    these combinations  are  allowed.  This  is  extremely  unfriendly for
>    relay!

No they don't.  Any routing key is possible.  Dynamic registration does not
support all possible routing keys.  Provisioned routing keys can take any
form.  Also note that SUA registration supports multiple and ranges of
addresses in a dynamically registered routing key.  Not even M3UA restricts
its routing keys to a single originating or destination point code.  You
can have one destination HLR point code and 400 MSC originating point codes
if you'd like.  Or visa versa.  Or 400 of each.

> 
>    Thus  in  traditional  networks  TFP or SSP messages manage traffic in
>    only  one  direction. Even more granularity of traffic is uniquely and
>    defined by the specifications.
> 
>    However  in  the  AS/RC  concept  in the mandatory SE model one ASP TM
>    message manages traffic in both directions!

ASP TM messages are not used to manage relay.  SNMM messages are.

--brian


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