Chapter 9 - Fax Operation
9-3
Class 1 Command Set
Command
Value
Description
+FCLASS=n
Service class selection
n=0
Set to Data mode
n=1
Set to Class 1 mode
n=2
Set to Class 2 mode
n=2.0
Set to Class 2.0 mode
n=6
Set to ZFAX mode
n=8
Set to Voice mode
Note:
If S57.4=0 (default), the response to the +FCLASS=? command
will not report Class 1 capability. This is due to the fact that
some fax software packages may get confused by this response.
Command
Value
Description
+FTS=n
0-255
Stop transmission and pause, in 10 ms units.
+FRS=n
0-255
Wait for silence, in 10 ms units.
+FTM=<MOD>
Transmit data with <MOD> carrier.
+FRM=<MOD>
Receive data with <MOD> carrier.
+FTH=<MOD>
Transmit HDLC data with <MOD> carrier.
+FRH=<MOD>
Receive HDLC data with <MOD> carrier.
The <MOD> parameter for the preceding commands take the following values:
Value
Modulation
Speed
Requirements
3
V.21 ch. 2
300
required for FTH & FRH
+FTH and +FRH support value 3 (V.21 ch. 2 / 300 bps) only.
24
V.27ter
2400
required for FTM & FRM
48
V.27ter
4800
required for FTM & FRM
72
V.29
7200
required for FTM & FRM
73
V.17
7200
required for FTM & FRM
74
V.17 w/st
7200
required for FTM & FRM
96
V.29
9600
required for FTM & FRM
97
V.17
9600
required for FTM & FRM
98
V.17 w/st
9600
required for FTM & FRM
121
V.17
12000
required for FTM & FRM
122
V.17 w/st
12000
required for FTM & FRM
145
V.17
14400
required for FTM & FRM
146
V.17 w/st
14400
required for FTM & FRM
* w/st means with V.17 short training