Multi-Tech Systems MT5634SMI V.92 ユーザーズマニュアル

ページ / 136
 
 
Chapter 3 – Fax Class 2 Commands 
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 
 
90    
 
Page Width Format Conversion, +FWDFC  
Class 2.0/2.1
  Not Applicable 
Class 2
 
Write syntax:  +FWDFC=<value
Valid values:  0, 1, 2 
Default value:  0 
This parameter determines the modem’s response to a mismatch between the page 
width negotiated for the facsimile session, reported by the +FCS:WD subparameter, 
and the Phase C data desired by the host, indicated by the optional +FDT:WD 
subparameter, or the +FIS=WD subparameter for +FDR operation. A mismatch 
would require clipping or scaling a wider format to a narrower one. 
FWDFC=0 Disables 
mismatch 
checking. The host must check the +FCS:WD 
subparameter and transfer matching data. 
FWDFC=1 Enables 
mismatch 
checking. 
An implied +FKS command is executed 
on mismatch detection. 
FWDFC=2 
Enables mismatch checking with page width conversion in the 
modem. 
Fax Flow Control, +FLO 
 
Syntax: +FLO=<value
Valid values:  0, 1, 2 
Default value:  1 
The +FLO command allows the host to select and identify the types of flow control 
provided and used. A TR29-standard modem can support XON/XOFF flow control. 
XON is the ASCII <DC1> character (11h); XOFF is the ASCII <DC3> character (13h). 
The modem may provide ITU-T V.24 circuits 106 (CTS) and 133 (RTS) for flow 
control.  
+FLO=0 
No fax flow control.  
+FLO=1 
Software fax flow control (XON/XOFF flow control in either direction).  
+FLO=2 
Hardware fax flow control. ITU-T circuit 133 (RTS) is used for flow 
control of the modem by the host. Circuit 106 (CTS) is used for flow 
control of the host by the modem. 
 
If circuits 106 and 133 are not being used for flow control (+FLO=2), 
then circuit 106 drops when an XOFF is sent, and goes high when an 
XON is sent. The conductor used for circuit 133 normally reverts to 
use as circuit 105 (RTS) when not being used for flow control.