Wireshark · Ethereal-dev: Re: [Ethereal-dev] Patch to expose OPC/DPC from MTP3, SCCP preferences

[Jeff Morriss <morriss@xxxxxxxxx>]

Michael Lum wrote:
> I will add AT_SS7PC.
>
> Does anyone have any suggestions for PC formatting ?
>
> > From the packet-mtp3.c dissector I will take the following:
>
> ANSI/CHINESE ITU	x-y-z where each of x, y and z are 8 bit values.
>
> ITU MTP3 Q.704 does not seem to indicate a format for the PC other
> than being a 14 bit value.  However, I have seen it represented as
> a-b-c where a and c are 3 bits and b is 8 bits.
>
> Our engineers prefer the 14 or 24 bit decimal value as opposed to
> any formatting because then there is no ambiguity about the value.
>
> I have also seen:
>
> 	8.8.8		for 24-bit point codes
> 	3-8-3		for 14-bit
>
> I.e. the '.' versus '-' was supposed to indicate 24 versus 14 bit.
>
> Anybody else have input ?

I have a fairly strong preference for the "8-8-8" for ANSI PC's and a 
similar--but less strong--preference for Chinese ITU.  (In fact I'd like 
to, at some point, find a way for M3UA to display its point codes like 
this instead of just decimal.)

I've also contemplated adding a way to display ITU PCs as 3-8-3 so it 
would be cool if this were available as a preference.