Modem User Manual

Chapter 3 – Fax Class 2 Commands
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 85
Adaptive Answer
Class 2.1 +FAA
Write syntax: +FAA=<value>
Valid values: 0, 1
Default value: 0
+FAA=0 The modem shall answer only as a Class 2.1 facsimile device. No
automatic switching of service class shall occur based on the calling
device type.
+FAA=1 The modem can answer and automatically determine whether to answer
as a facsimile modem or as a data modem. If the modem automatically
switches, it resets the +FCLASS parameter to 0. +FCLASS does not
affect switching to Class 2.1 from other classes or switching to classes
other than Class 0.
Note: If the modem reconfigures itself to data modem operation in
adaptive answering, the host must reissue a new +FCLASS=2.1
command to enable subsequent Service Class 2.1 facsimile operation.
Class 2 +FAA
Write syntax: +FAA=<value>
Valid values: 0, 1
Default value: 0
+FAA=0 Constrains the modem to answer as set by +FCLASS.
+FAA=1 The modem can answer and automatically determine whether to answer
as a facsimile modem or as a data modem. If the modem automatically
switches, it modifies FCLASS as appropriate.
Host Phase C Response Timeout, +FCT
Write syntax: +FCT=<value>
Valid values: 0–255 in 100-millisecond units.
Default value: 30
This determines how long the modem waits for a command after reaching the end of
data when transmitting in Phase C. When this time-out is reached a cancellation
signal and then a +FHS:43 is issued to the host and the remote side is sent a
disconnect frame.
+FPHCTO, Host Phase C Response Time-out
Class 2.1/2.0 Not Applicable.
Class 2
Syntax: +FPHCTO=<value>
Value Values: 0 – 255
Default Value: 30
+FPHCTO=? 0-255 +FPHCTO? 30 Default value. Range: 0 - 255
This command specifies the waiting period during a fax transmission beyond which
the transmission is automatically terminated with an end-of-page command.