i4brbch - isdn4bsd ISDN Raw B-CHannel access driver
device "i4brbch" [count]
The i4brbch driver provides an interface to the raw untranslated B- channel. It is part of the isdn4bsd package.
The i4brbch device driver and this manpage were written by Hellmuth Michaelis 〈hm@FreeBSD.org〉.