Wireshark · Ethereal-dev: [Ethereal-dev] ISDN B channel protocols from lowers to highest

[Tomas Vilda <webmaster@xxxxxxxxxxx>]

Hello,

I have a question.

according to OSI model, what protocols are used from lowest to highest 
on ISDN to internet 
<http://www.experts-exchange.com/Networking/Q_21109605.html#> connection 
if i'm connecting using PPP and recording all raw B channell traffic.

for example from highest to lowest

IRC->TCP->IP->..(1)..->..(2)..

what lowest protocol is on raw B channel traffic (2), and what are 
protocols that are encapsulated in that protocol going to highest level IRC?

Regards,
Tomas Vilda