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Integrated Services Digital Network (ISDN)

XXX - add a brief ISDN description here


XXX - add a brief description of ISDN history

Protocol dependencies

ISDN runs on top of the hardware supplying time-domain-multiplexed channels on a BRI or PRI line, so it depends only on hardware.

Example traffic

XXX - Add example traffic here (as plain text or Wireshark screenshot).


The ISDN dissector is partially functional. It assumes that it is supplied with a frame for some protocol layer (such as LAPD on a D-channel, or a protocol such as PPP on a B-channel), ,and an indication of the channel, displays the channel number, and dissects all D-channel traffic as Q.931. It attempts to guess whether B-channel traffic is V.120 or PPP; it could perhaps be enhanced either to attempt to guess other traffic types or to allow a traffic type to be specified by a preference.

Preference Settings

There are no ISDN specific preference settings.

Example capture file

Display Filter

A complete list of ISDN display filter fields can be found in the display filter reference

Capture Filter

As Wireshark doesn't support capturing raw ISDN traffic, there are no capture filters for it.


ISDN (last edited 2008-04-12 17:49:41 by localhost)