Multitech Modem Module MT3334SMI, Developer'S Manual

Page: 33 / 74

Chapter 3 - Class 1 Fax Commands
MT3334SMI 33
Table 3-1. Fax MOD (Modulation) Parameter Values
Value Modulation Speed (bps) Requirements
3 V.21 ch.2 300 required for +FTH & +FRH
24 V.27ter 2400 required for +FTM & +FRM
48 V.27ter 4800 required for +FTM & +FRM
72 V.29 7200 optional
73 V.17 7200 optional
74 V.17 w/st 7200 optional
96 V.29 9600 optional
97 V.17 14400 optional
98 V.17 w/st 14400 optional
121 V.17 or V.33 12000 optional
122 V.17 w/st 12000 optional
145 V.17 or V.33 14400 optional
146 V.17 w/st 14400 optional
All other codes are reserved. "V.17 w/st" indicates V.17 short training (aka, "quick train"). All of the
above commands return an ERROR result code if entered when the ModemModule is on-hook.
Use the command syntax +<command>=? to ask for the valid range of values supported. For
example, if you entered +FTH=?, the Class 1 ModemModule would return 3 (a Class 2
ModemModule would return 3,24,48,72,73, 74, 96).
Command: +FCLASS? <Enter>
Function: Display Current Class
Values: 0, 1, 2
Default: 0 (data modem)
Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range.
Description:
+FCLASS? requests the current Service Class of the ModemModule, as shown
below.
Result Code Meaning
0 indicates a data modem
1 indicates a Service Class 1 (fax/data) modem
2 indicates a non-standard Class 2 modem (based on an early draft of the Class 2.0
standard).
Command: +FCLASS=? <Enter>
Function: Display Service Class Capabilities
Values: 0, 1 (other values are reserved)
Default: 0 (data modem)
Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range.
Description:
The +FCLASS=? command displays the set of Service Classes supported by the
modem from the list of values (e.g., 0,1 for a modem that supports data
communications plus fax Service Class 1). This command returns the service class
or classes available with the modem. The modem returns a list of all supported
values, separated by commas if more than one class is supported. For example, a
modem that supports data communications and Class 1 fax would respond with
"0,1".