Toto,
In general, the choice between fully associated and quasi associated
modes is a matter of engineering and economic tradeoffs. For example,
STPs tend to cost a lot of money. However, a full mesh network of
F-links may increase facilties costs for underutilized links. Also,
the size of the network and returns to scale are a consideration.
Interface hardware costs on F-link attached nodes is another
consideration. (If a node must support hundreds or even thousands
of underutilized SS7 links, quasi-associated is a better choice.)
Management and adminstration costs are another consideration.
Large SS7 networks tend to utilize the quasi-associated mode. Smaller
networks or clusters of smaller networks normally start with fully
associated.
If the number of SEPs in a network is 2, fully associated is
cheaper and performs better than quasi-associated. If the number
of SEPs in a network is 2000, and each must connect to each other,
quasi-associated may be more economical.
--brian
Toto Wibowosih wrote: Thu, 29 Nov 2001 14:51:37
>
> Dear all,
>
> In SS7 network we considerate two modes. They are associated mode that
> direct signalling between SP and quasi associated mode that using STP to
> transfer signalling some SP.
>
> What's benefit Quasi associated and when do more effective using quasi
> associated?
>
> comment please.
>
> Thanks
> Wibowosih
--
Brian F. G. Bidulock ¦ The reasonable man adapts himself to the ¦
bidulock@openss7.org ¦ world; the unreasonable one persists in ¦
http://www.openss7.org/ ¦ trying to adapt the world to himself. ¦
¦ Therefore all progress depends on the ¦
¦ unreasonable man. -- George Bernard Shaw ¦