C

characteristics

A set of internal values maintained by CPI-C for each conversation. They can affect the operation of the entire conversation or of specific calls.

client

(1) A functional unit that receives shared services from a server. (2) A user.

code page

A table that associates specific ASCII or EBCDIC values with specific characters.

Common Programming Interface for Communications (CPI-C)

An evolving application programming interface (API), embracing functions to meet the growing demands from different application environments and to achieve openness as an industry standard for communications programming. CPI-C provides access to interprogram services such as (a) sending and receiving data, (b) synchronizing processing between programs, and (c) notifying a partner of errors in the communication.

Common Service Verb (CSV)

An API that provides ways of translating characters, tracing, and sending network management information to a host.

configuration file

A file containing setup and configuration information for SNA Server. It defines servers, connections, LUs, users, and other items. The configuration file that is loaded when SNA Server Manager starts is called COM.CFG.

connection object

In AFTP, a connection (not necessarily active) to a partner computer.

connectivity

(1) The capability of a system or device to be attached to other systems or devices without modification. (2) The capability to attach a variety of functional units without modifying them.

conversation

(1) A logical connection between two transaction programs using an LU 6.2 session. Conversations are delimited by brackets to gain exclusive use of a session. (2) The interaction between TPs carrying out a specific task. Each conversation requires an LU-LU session. A TP can be involved in several conversations simultaneously. See also basic conversation, mapped conversation. (CPI-C definition) The logical connection between two programs that allows the programs to communicate with each other.

CSV verb

The mechanism by which a program accesses CSV. Each verb supplies parameters to CSV. See also Common Service Verb.

current directory

The first directory in which the operating system looks for programs and data files and stores files for output.