6100 ADCCP Programming Manual

Features of the 6100 ADCCP Product
Introduction to 6100 ADCCP
1–2 069225 Tandem Computers Incorporated
Table 1-1. Application Requests
Request Description
CHANGELIST Changes station descriptions.
DEFINELIST Describes stations on the link.
FETCH CONFIGURATION Retrieves current ADCCP line parameters.
FETCH STATISTICS Retrieves line quality information, counts of different types of frames,
and other statistics maintained by ADCCP.
MODE SET Transmits a mode-setting frame, or prepares a station to receive one.
MODEM CONTROL Establishes or dissolves the modem connection.
RECEIVETEXT Accepts data from a remote station.
SCAN LIST Determines polling order.
SENDTEXT Transmits data to a remote station.
SET CONFIGURATION Supplies values for ADCCP line parameters.
START OPERATION Initializes the driver, raises DTR if the line is leased.
STOP OPERATION Abruptly terminates all line activity.
TRANSLATE TABLE Replaces default ASCII to EBCDIC and EBCIDIC to ASCII translation
tables.
In addition to the features of the ANSI definition described at the beginning of this
section, the ADCCP module also supports:
Links that can have up to 255 stations
LIUs that run ADCCP can represent a primary station, a combined station, or one
or more secondary stations.
Address fields that can be from 1 to 4 octets (bytes) long and control fields can be
from 1 to 2 octets (bytes) long.
Note “Octet” is the ADCCP term for a unit of eight bits. On Tandem systems, a byte is equivalent to an octet.
In this manual the term byte is used instead of octet.
An extended control field (2 bytes) that allows you to send up to 127 frames to a
station without receiving an acknowledgment, or receive up to 127 frames without
sending an acknowledgment.
The following frame types (see the subsection “Unnumbered-Frame Control Field“
later in this section for a description of these frames):
Set Normal Response Mode (SNRM)
Set Normal Response Mode Extended (SNRME)
Set Asynchronous Balanced Mode (SABM)
Set Asynchronous Balanced Mode Extended (SABME)