---
name: "i4btrc"
section: "4"
platform: "linux"
package: "freebsd-manpages"
version: "6.0-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux"]
url: "https://new.carta.tech/i4btrc"
---

# i4btrc(4)

isdn4bsd ISDN interface driver for D and B channel tracing

## NAME

**i4btrc** – isdn4bsd ISDN interface driver for D and B channel tracing

## SYNOPSIS

**device** **"i4btrc"** \[count\]

## DESCRIPTION

The **i4btrc** driver is used to add a header to the data got from the D and/or B channel and queues it to be read and further processed by the isdntrace(8) or isdndecode(8) utilities.

## SEE ALSO

isdnd(8), isdndecode(8), isdntrace(8)

## AUTHORS

The **i4btrc** device driver and this manpage were written by Hellmuth Michaelis ⟨hm@FreeBSD.org⟩.