ATPAD Ports

ATPAD Operation

ATPAD

Data Forwarding Criteria

An ATPAD port operates in either a Command Mode or Data Mode. This port type is always in the Command mode whenever a call is not taking place.

When the ATPAD is in the Command mode, it receives characters from the attached terminal device, processes them using the ATPAD command processor, and sends a response (or result code) to the terminal. It does not forward the command to the network.

The ATPAD is in data mode when there is an X.25 network call in place to a remote device. In data mode, it receives characters from the terminal device, packetizes them, and forwards them through the network to the remote device.

You can select the format for printing with the port parameter “Result Codes”. The options are:

ALPHA—Result codes are printed in all capitals. They are printed on a new line and the cursor is advanced to the next new line. (<CR><LF> Result Code <CR><LF>).

NUM—The numerical equivalent result code is printed followed by a <CR>.

NONE—No result codes are displayed.

Criteria Descriptions

This table describes three criteria used to packetize and forward data to the network.

If you want to...

Then use...

 

 

Forward data on full packets...

Forward on full packet.

 

The ATPAD always forwards on full

 

packets.

 

You can configure the maximum packet size

 

as 128, 256, 512, or 1024 bytes. You can

 

select one of the other two criteria so that

 

the ATPAD forwards data before a full

 

packet has been assembled.

 

 

Packetize and forward the characters

Forward on Data Forwarding Character.

received since the last time

You can use the Data Forwarding Timer in

expiration....

interactive sessions where the host

 

 

(Echoplex) echoes the characters typed by

 

the terminal equipment. If you want the

 

characters to be echoed as quickly as

 

possible, set the Data Forwarding Timer to a

 

low value. If you set the Data Forwarding

 

Timer to a zero value, you disable this

 

function.

 

 

Send records or command to the host

Forward on Data Forward Character

and they are always terminated by

 

the same character, for example;

 

<CR>...

 

 

 

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Configuring PAD/ATPAD Ports

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3Com S200 manual Atpad Operation, Data Forwarding Criteria, Criteria Descriptions, If you want to Then use

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