Dear Elnaz,
You write:
I have some doubts about connection function.
I would appreciate if you could give me some hint and assistance.
Ok, I will try.
- I wonder if the connection function in ITU-T standard definition
is a function for every inputs and output and all over MI
configurations have been set for this or there is more than one
connection function which is defined for every input and output
which we want to connect.
Generically there are separate connection functions per CI type,
i.e. a connection function for VC-4, another for VC-3, and another
for VC-12... at least from a management point of view.
Hardware can combine them in a single block.
In principle all VC-n input ports and output ports are connected
by the VC-n connection function.
However there can be hardware/implementation restrictions.
The management system should be aware of these restrictions.
- There are such MI parameters as connection type, directionality,
and connection port id.
connection port id seems not to be a user-settable parameter
because in 7.1 table (G.806) is not mentioned. so, in my idea,
this parameters is internal and is used for specification of the ports.
Indeed port id is normally fixed in the hardware.
In a network a port may have a name, this network name is translated
bij the equipment manager into a port id.
- I think connection type and directionality parameters are specified
as long as the user defines a connection and they can not be changed
but the so-called connection is removed entirely. for example, if
directionality is unidirectional and we want to change it to
bidirectional we must remove this connection and define it again with
new parameters.
Indeed. Although there may be clever management software that adds a unidirectional connection in the oposite direction to an existing unidirectional connection to make it a bi-directional connection.
- The AI-TSF and AI-TSD are conditional defects of the SNCP/N(SF > and SD respectively.)
SNCP runs in Sn-C or Sm-C function,
on the other way, it is always noted that connection input and
output is CI. so how can we explain about the AI which is the
input of the connection?
The adaptation function translates the AI-TSF into CI-SSF and AI-TSD
into CI-SSD.
Kind regards, Huub.
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