Wireshark · Wireshark-dev: Re: [Wireshark-dev] H.223 dissector - separate "bitswapping" into separate dissector

[Guy Harris <guy@xxxxxxxxxxxx>]

Richard van der Hoff wrote:
> The H.223 dissector contains code to deal with "bitswapped" captures - 
> ie, where all of the bytes have their bits backwards. It seems that this 
> is much better handled as a separate dissector entry point, so that the 
> right one can be chosen when the dissector is registered, rather than 
> the current dubious heuristics.

So in what cases are the bytes bitswapped, other than H.223-over-IAX?

And is there any need to have two separate protocols, rather than two 
separate dissectors for the same protocol (namely H.223)?