PAD Hosts Database

In x25tool, the parameters for the PAD Hosts Database can be accessed through the Services menu.

The parameter values are stored in the configuration files: /etc/opt/SUNWconn/x25/padmapconf, /etc/opt/SUNWconn/x25/x29profile, and /etc/opt/SUNWconn/x25/xhosts.

The PAD Hosts Database contains information about remote hosts that makes it easier for users to make PAD calls to them.

Default values for these parameters can be configured on a per-call basis. See Solstice X.25 9.2 PAD User's Guide. The parameters are:

Remote X.121 Address

The DTE or LSAP address of the remote host. A DTE address is of 15 or fewer decimal digits. An LSAP is 14 hexadecimal digits in length. In most cases, the last two digits of an LSAP (the SAP) are 7e. The x25tool program accepts ARP-style notation, with colons separating the bytes within an LSAP address. Within a colon-delimited byte, you can omit a leading zero.

Extended Address

Choose None (the default), OSI, or non-OSI. This is the type of extended address you use in the network to which the link you are configuring is attached. Extended Addressing is not available if your call is traversing a 1980-type WAN.

Extension (for non-OSI) or OSI NSAP (for OSI extended addresses)

Enter a hexadecimal address of 40 digits or fewer. This feature is not available if your call is traversing a 1980-type WAN.

Alias(es)

A PAD user can substitute any aliases entered here for the host name of a remote host when making a PAD call.

Link Selection

Choose Automatic or Specified. Automatic uses the Solstice X.25 routing (link selection) feature. If you choose Specified you must specify the link number yourself.

Link Number

The link over which PAD makes calls to the specified remote host. This parameter only applies if you have multiple links.

PAD Profile

Profile names refer to specific sets of PAD (X.3) parameter settings. If the Simple profile (the default) is not appropriate for the specified remote host, choose one of the other named profiles. Your network provider should tell you which profile you need to use.

If none of the seven profiles provided with the product suits your needs, you can modify some or all of the 22 parameters defined in the 1988 CCITT X.3 recommendation. See "X.3 Parameters" for more information.

Call User Data

A string of up to 124 ASCII characters that the PAD software will include in Call Request packets.

Packet Size (local and remote)

This is a number determined by the requirements of your remote host and PSDN. If your packet sizes are different from the default of 512, press MENU in the Local (or Remote) Packet Size button and select the packet size appropriate for your remote host.

Window Size (local and remote)

This is determined by the requirements of your PSDN and your remote host.

CUG Type

If your host is a member of a Closed User Group, choose the appropriate CUG type.

CUG Number

If your host is a member of a multi-user or bilateral CUG, type the CUG number here.

X.29 Type

Specifies the year of the X.29 recommendation supported by the remote host. Default means that you use the X.25 type specified for a given link.

Fast Select

Determines whether Fast Select is in effect for the calls to the specified host. If you enter more than 12 characters of Call User Data, the PAD software automatically uses Fast Select, regardless of the setting here. For more information on Call User Data, see "Call User Data".

8-bit Mode

In 7-bit mode (the default), characters are seven bits long and parity is filtered. In 8-bit mode, characters are eight bits long with no parity.

Reverse Charge

Determines whether the PAD software can make reverse charge calls.

RPOA Numbers

A four-digit number that provides networks between you and the remote host with additional routing information. You can have up to four RPOA numbers. If you have multiple RPOA numbers, enter them together in the same sequence of digits, with no spaces between.