User`s manual

U.S. Robotics I-modem Command Reference
Appendix C: Fax Information for Programmers • Page C-2
FAX Service Class 2.0 Commands
In addition to the standard Class 2.0 fax commands, U.S. Robotics implements the follow-
ing optional Class 2.0 fax commands :
Fax Mode Flow Control Setting
Many facsimile software products use software ßow control when the modem is in Fax
mode. Throughout our documentation, we recommend that you use hardware ßow control
for Data mode
(factory setting). However, to allow compatibility with software products
+FNS=0,1 Pass-through, nonstandard negotiation byte string.
+FCR=0,1 Capability to receive.
+FAA=0,1 Adaptive Answer mode.
+FCT=0-255 sec. Phase C Timeout
+FHS=0-255 Hangup Status Code, read only.
+FMS=0-3 Minimum Phase C Speed.
+FBS?=500,100 Buffer size, read only.