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Edit
Configurations: Asynchronous DCE, Asynchronous DTE
Data Protocols: X.25, Mode 3
This option is used with the Forwarding option and allows you to correct characters and lines of
text before sending out packets.
Select on if you want to be able to edit packets before you send them; select off otherwise. Note
that Forwarding must be set to something other than off for Edit to work.
The characters that you can use for editing are selected with the Char.erase and Line.erase options.
These characters are acted on locally and are not sent out in packets. If you type more than a full
packet of data, then a packet will be sent out automatically.
Without Help
Interactions with Char.erase and Line.erase: At least one of these options must be set to a value other
than off for editing to work.
FCPN (Flow Control Parameter Negotiation)
Configurations: Asynchronous DCE, Asynchronous DTE
Data Protocols: X.25
A FCPN selection of off is used to request default values of the window and packet sizes (2 and
128, respectively) in the X.25 Flow Control Parameter Negotiation facility.
A FCPN selection of on is used to request a window size of 3 and a packet size of 256 in the X.25
Flow Control Parameter Negotiation facility. Check with your system administrator to find out if on is
a selection that is available to you.
If this option is changed during an active data call, it will not take effect until the next data call.
Without Help
An FCPN setting of off is recommended when more than four ISDN terminals
connected to the same line are simultaneously using DX25 packet data communications.
Otherwise, under worst case load, packet congestion on the line may cause your data
call to be dropped.
Asynchronous DCE and Asynchronous DTE
Option Values For Edit
Front Panel
With Help
0
OFF
1
ON
Asynchronous DCE and Asynchronous DTE
Option Values For FCPN
Front Panel
With Help
OFF
0
1
ON
CHAPTER 4: DEFINITIONS OF 7500 OPTIONS
Factory Value
CMD
Mode
DCE
DTE
off
X
X
on
Factory Value
CMD
Mode
DTE
DCE
off
X
X
on
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