Address Formats

If there is no entry for a host in the PAD Hosts Database, you must use its address to make a call to it. The type of address you use depends on the type of network you are making the call across.

• PSDN

  If you are making a call across a Packet Switched 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.

• LAN

  If you are making a call to a host that is on the same LAN as you, you must enter its LSAP address. This is 14 hexadecimal 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.

If you are not sure of a remote host's address, ask your System Administrator.