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Fax Operation
Table 9-1. Modulation Values (Continued)
Value
98
121
122
145
146
* with short train
The V.3400 returns an ERROR result code if any of the above
commands are issued while the modem is on hook.
Facsimile Transmit +FTM= (Mod)
+FTM= (Mod) causes the modem to transmit data using the modulation
and speed selected with the (Mod) parameter. For V.27 ter, V.29, and
V.17 modulations, the modem first transmits the required training
sequence (with echo protector tone). After it is appropriately configured
for transmission, the modem returns the CONNECT result code and
transmits constant 1 bits until data is received from the DTE. For addi-
tional information, consult the Class 1 specification.
Facsimile Receive +FRM= (Mod)
+FRM= (Mod) causes the modem to receive data using the modulation
and speed selected with the (Mod) parameter. If the selected carrier is
detected, a CONNECT result code is sent to the DTE; if a different
signal is detected, the modem sends a +FCERROR (CONNECT
ERROR) result code and returns to command mode. This command is
aborted if the DTE sends any character to the modem other than DC1 or
DC3 during this mode. For additional information, consult the Class 1
specification.
HDLC Transmit +FTH= (Mod)
+FTH=(Mod) causes the modem to transmit HDLC framed data using
the modulation and speed selected with the (Mod) parameter. For V.27
ter, V.29, and V.17 modulations, the modem will first transmit the
required training sequence (with echo protector tone). Configured for
HDLC transmission, the modem transmits HDLC flags and returns the
9-8
Modulation
V.17
V.17
V.17
V.17
V.17
V.3400
Speed
9600 bps *
12000 bps
12000 bps *
14400 bps
14400 bps*
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