Fax Commands - US Robotics 56K USB Modem User Manual

+PSS=<value>—Use Short Sequence
Use this command to enable or disable the V.92 short training sequence.
Result codes:
• OK if <value> = 0.
ERROR if <value> ≠ 0.
•
Table 123. Valid +PSS Commands
Command
+PSS=0 Uses training sequence set in by the +PQC command.
Table 124. +PSS Extended Syntax Commands
Value
+PSS= <value>
+PSS?
+PSS=?

FAX Commands

The USRobotics controller-based modems support FAX commands conforming to ITU-T Recommendation
T.31 (08/95), which outlines service class 1 asynchronous facsimile under DCE control, ITU-T
Recommendation T.32 (08/95), which outlines service class 2 asynchronous facsimile under DCE control,
and Amendment 1 to both T.31 and T.32, which defines command modifications for V.34 FAX.
In FAX communication, ia facsimile machine transmits a graphic image to a receiving facsimile machine.
As a result, most of the commands in this section are not designed for interaction with an end user.
The commands generate a result code to acknowledge reception and the action taken on a command.
However, in many cases the command will generate an ERROR result code if it is not connected to a
sending or receiving facsimile device.
+FAA=<value>—Adaptive Answer
A service class 2 or class 1 FAX DCE may have the ability to answer as a data modem DCE or as a FAX
DCE. It may also be able to change from class 2 or class 1 FAX mode to data-modem operation in
response to an incoming call.
Note: This command controls automatic switching from class 2 or class 11 to class 0 for call answering
only. It does not affect call origination, switching to class 2 or class 1 from other classes, or switching
to classes other than class 0.
Result codes:
• OK if <value> = 0, 1.
ERROR if <value> ≠ 0, 1.
•
Table 125. +FAA Commands
Command
+FAA=0 The DCE answers only as a class 1 FAX device. No automatic switching of service
class occurs based on the calling device type (default).
Selects whether the modem determines if the short sequence is used.
Displays the current short training sequence settings.
Displays the valid +PSS parameter values.
Meaning
Meaning
Function
56K USB Modem
User Guide
Command Reference - 55