---
name: "imontty"
section: "1"
platform: "linux"
package: "isdnutils-base"
version: "1:3.25+dfsg1-10"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/imontty"
---

# imontty(1)

display status of all ISDN lines

## NAME

imontty - display status of all ISDN lines

## SYNOPSIS

**imontty** \[ phonebook \]\

## DESCRIPTION

*imontty* displays the status of all ISDN lines. No options are supported. Read access to */dev/isdninfo* is required.

It is possible to supply the name of a phonebook file. The phonebook file has the following format:

```
   number<tab>name for number
```

The number must be the first thing on the line (no leading spaces). The name is separated from the number by a tab. Lines beginning with # are ignored, as are empty lines.

The output is similar to this:

```
ISDN channel status:
Channel                 Usage Type  Number
----------------------------------------------------------
line0                   Out   Net   0204229700
line0                   Off
```

*Usage* is one of **Off**(line), **Out**(going), **In**(coming) or **Excl**(usive).

*Type* is one of **raw** (raw device), **Modem** (modem/tty emulation), **Net** (IP interface), **Voice** (voice call) or **Fax** (fax transmission).

*Number* is either the called party's number (outgoing) or the calling party number (incoming).

## AUTHOR

Volker Götz volker@oops.franken.de\
 manpage adapted from the README by Paul Slootman \<paul@isdn4linux.de\>

## SEE ALSO

*imon* (8)