[openss7] SCCP Hop Counter

[Korpi Juha <Juha.Korpi@iclinvia.com>]

> Greetings !!
>  
> I have a question in relation to the SCCP Hop Counter parameter. When the
> routing is based on GT and the message is a XUDT, the hop counter is
> decreased by one in the node(T1.112 and White Book).
>  
> Do you know where and when the initail value is set ?What is the initial
> value ? Is the meaning following:
> 1.Originating node is sending some XUDT messages and routing based on GT
> 2.GT translation is done->(DPC_a,GT), Hop counter is decreased by one ( 3
> -> 2) , message is sent to the DPC_a
> 3.DPC_a receives the message, the routing is based on GT -> translation->
> result is DPC_b+SSN ->Hop counter is decreased by one ( 2 -> 1)-> message
> is sent to DPC_b
> 4.DPC_b receives the message and DPC_b is this node 
> 
Is the purpose of the SCCP Hop Counter to "check that all GT tables are OK"
and there will not be some unfocused messages in the network ?

> Br Juha Korpi
> 
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> ICL Invia Oy, Finland, Juha Korpi
> http://www.iclinvia.fi
> Homo Homini Lupus
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>