Command Reference Guide

3Com Router 5000 Family and Router 6000 Family fax nsf-on ● 159
Command Reference
fax nsf-on
Purpose Use the fax nsf-on common to configure the fax faculty transmission mode as Not
Standard mode.
Use the
undo nsf-on command to restore the default fax faculty transmission
mode.
Syntax fax nsf-on
undo fax nsf-on
Parameters None
Default By default, the fax faculty transmission mode is undo nsf-on.
Example Configure to perform fax transmission with NSF.
[Router-voice-dial-entity1] fax nsf-on
View This command can be used in the following views:
■ Voice Entity view
Description Use the fax nsf-on common to configure the fax faculty transmission mode as Not
Standard mode.
Use the undo nsf-on command to restore the default fax faculty transmission
mode.
This command is only applied to IP Fax.
In some occasions like communicating with encrypted fax, the Not Standard Faculty,
or NSF for short, is rather important for fax communication. It is necessary to
configure the
fax nsf-on command, so that the fax terminals on both sides will
first exchange NSF message at the beginning of transmission, and then complete the
follow-up fax negotiation according to NSF and communicate with each other. NSF
messages are T.30 compliant and carry private information.
To allow NSF field to be carried during fax faculty signal transmission, the following
conditions must be met:
■ Fax terminals must support NSF transmission mode.
■ The fax faculty signal transmission mode must be set to Not Standard in the POTS
and VoIP entities for the participating fax terminals.