Introduction to TRANSFER Delivery System

Correspondents The TRANSFER Environment
2-2 109426—Introduction to TRANSFER Delivery System
Correspondents
A correspondent is a sender and receiver of packages. Correspondents can be:
■ People: Electronic mail lets people send packages to each other.
■ Processes: A requester process at one node can send a package to a server process
at another node. For example, a process in an order-entry application might send
data to a process in an inventory application.
■ Devices: A reporting process might send the same report to several output devices.
If several applications run in the same TRANSFER system, any application in the
system can address any correspondent.
TRANSFER identifies a correspondent by name. TRANSFER maintains a name
directory that contains the name of each registered correspondent; each node in a
TRANSFER system has one name directory. A system administrator, who is a
correspondent responsible for managing TRANSFER objects at a node, can use the
Tandem ADMIN application interactively to add and delete correspondent names at that
node. A user-written application can also add or delete a correspondent.
Some examples of correspondent names are:
Interest Groups
In addition to private correspondents, TRANSFER also supports interest groups. An
interest group is a group of correspondents who have a common interest or function;
they share access to packages sent to the group and can take advantage of group
distribution lists.
Correspondents can send a package to a group by designating the group name as the
recipient. All group members can then see the package by looking in the group folder in
which the package is filed. Correspondents can also send a package to all the members
of a group by using the MEMBERS distribution list that is automatically created for the
group. When a package is sent to group.MEMBERS, all group members receive the
package individually.
Correspondents cannot log on to TRANSFER using a group name; therefore, a group—
unlike a single correspondent—cannot send packages.
JONES_BOB @ NY JONES_BOB is a correspondent at the \NY node.
GARMAN-G-G @ CHIC GARMAN-G-G is a correspondent at the \CHIC node.
7356 @ BALTO 7356 is a correspondent at the \BALTO node.