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

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Chapter 3 – Fax Class 2 Commands 
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 
 
88    
 
Format conversion, 
+
FFC 
Class 2.0/2.1
 
Write syntax:   
+
FFC
=
<vrc>,<dfc>,<lnc>,<wdc> 
Valid values:   
see table below 
Default values:  
manufacturer’s option 
Mandatory values:  0,0,0,0 
This compound parameter determines the modem response to mismatches between 
the Phase C data delivered after the +FDT command and the data format parameters 
negotiated for the facsimile session. For mismatch checking, the modem depends on 
the host to indicate the data format with embedded <DLE><format> character pairs. 
If these format indicators are not provided, the modem shall assume that the format 
is as negotiated for that session. 
For each subparameter, value 0 determines that mismatch checking is disabled, and 
all format codes of this type are ignored. Value 1 determines that mismatch checking 
is enabled, with session termination if the format codes do not match the negotiated 
format reported in +FCS: responses. Other values enable degrees of format 
conversion. Unspecified values are reserved. 
 
 
Class 2
 
Not Applicable 
Note that the four arguments of the Class 2.0/2.1 command +FFC cover the same 
technical content as these four separate Class 2 commands (which are described in 
detail below):   
+FVRFC (for vertical resolution),  
+FDFFC (for data compression format version),  
+FLNFC  (for page length format conversion), and  
+FWDFC  (for page width format conversion). 
Setting 
Description 
vrc
=0 
vrc
=1 
vrc
=2 
vrc
=3 
Vertical resolution format codes ignored 
Vertical resolution checking enabled 
Vertical resolution conversion enabled for 1-D data 
Vertical resolution conversion enabled for 2-D data 
dfc
=0 
dfc
=1 
dfc
=2 
Data format codes ignored 
Data format checking enabled 
Data format conversion enabled 
lnc
=0 
lnc
=1 
lnc
=2 
lnc
=3 
Page length format codes ignored 
Page length checking enabled 
Page length conversion enabled for 1-D data 
Page length conversion enabled for 2-D data 
wdc
=0 
wdc
=1 
wdc
=2 
Page width format codes ignored 
Page width checking enabled 
Page width conversion enabled