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COURIER HIGH SPEED MODEMS
5-4 Fax Operations
CALL DETECTION
Courier High Speed modems support Call Detection, which is a
method of reporting whether an incoming call is Data, Fax Class
1, or Fax Class 2.0. It is especially useful for Bulletin Board
systems, as it automates recognition of different calls from
multiple users.
Call Detection is an optional Service Class 2.0 feature, and is
also implemented by U.S. Robotics for Fax Class 1 applications.
To obtain a copy of the technical specification of U.S. Robotics'
implementation of Call Detection for Fax Class 1, call our BBS at
(708) 982-5092 and download the file CALLSEL.TXT.
For information on implementing Fax Class 2.0 Call Detection,
see the standard listed above. For a list of the optional Fax
Class 2.0 commands supported by U.S. Robotics, see Appendix
K.