Solstice X.25 9.2 PAD User's Guide

address

If you are making a call across a Packet-Switching Data Network, you must enter the remote host's X.121 address. This is almost certainly a DTE address and can be up to 15 decimal digits long.

If you are making a call to a host on the same LAN as you, you must enter its LSAP address. This is 14 decimal digits long and is made up of the host's 12 digit MAC address, followed by a 2 digit SAP address. The default SAP address for X.25 systems is 7e. For example, if the remote host's MAC address was 080020092186, its LSAP address would be 0800200921867e.